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sysinfo

Struct User

Source 
pub struct User { /* private fields */ }
Expand description

Type containing user information.

It is returned by Users.

use sysinfo::Users;

let users = Users::new_with_refreshed_list();
for user in users.list() {
    println!("{:?}", user);
}

Implementations§

Source§

impl User

Source

pub fn id(&self) -> &Uid

Returns the ID of the user.

use sysinfo::Users;

let users = Users::new_with_refreshed_list();
for user in users.list() {
    println!("{:?}", *user.id());
}
Source

pub fn group_id(&self) -> Gid

Returns the group ID of the user.

⚠️ This information is not set on Windows. Windows doesn’t have a username specific group assigned to the user. They do however have unique Security Identifiers made up of various Components. Pieces of the SID may be a candidate for this field, but it doesn’t map well to a single group ID.

use sysinfo::Users;

let users = Users::new_with_refreshed_list();
for user in users.list() {
    println!("{}", *user.group_id());
}
Source

pub fn name(&self) -> &str

Returns the name of the user.

use sysinfo::Users;

let users = Users::new_with_refreshed_list();
for user in users.list() {
    println!("{}", user.name());
}
Examples found in repository?
examples/simple.rs (line 377)
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fn interpret_input(
    input: &str,
    sys: &mut System,
    networks: &mut Networks,
    disks: &mut Disks,
    components: &mut Components,
    users: &mut Users,
) -> bool {
    match input.trim() {
        "help" => print_help(),
        "refresh_disks" => {
            writeln!(&mut io::stdout(), "Refreshing disk list...");
            disks.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_users" => {
            writeln!(&mut io::stdout(), "Refreshing user list...");
            users.refresh();
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_networks" => {
            writeln!(&mut io::stdout(), "Refreshing network list...");
            networks.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_components" => {
            writeln!(&mut io::stdout(), "Refreshing component list...");
            components.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_cpu" => {
            writeln!(&mut io::stdout(), "Refreshing CPUs...");
            sys.refresh_cpu_all();
            writeln!(&mut io::stdout(), "Done.");
        }
        "signals" => {
            let mut nb = 1i32;

            for sig in signals {
                writeln!(&mut io::stdout(), "{nb:2}:{sig:?}");
                nb += 1;
            }
        }
        "cpus" => {
            // Note: you should refresh a few times before using this, so that usage statistics
            // can be ascertained
            writeln!(
                &mut io::stdout(),
                "number of physical cores: {}",
                sys.physical_core_count()
                    .map(|c| c.to_string())
                    .unwrap_or_else(|| "Unknown".to_owned()),
            );
            writeln!(
                &mut io::stdout(),
                "total CPU usage: {}%",
                sys.global_cpu_usage(),
            );
            for cpu in sys.cpus() {
                writeln!(&mut io::stdout(), "{cpu:?}");
            }
        }
        "memory" => {
            writeln!(
                &mut io::stdout(),
                "total memory:     {: >10} KB",
                sys.total_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "available memory: {: >10} KB",
                sys.available_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "used memory:      {: >10} KB",
                sys.used_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "total swap:       {: >10} KB",
                sys.total_swap() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "used swap:        {: >10} KB",
                sys.used_swap() / 1_000
            );
        }
        "quit" | "exit" => return true,
        "all" => {
            for (pid, proc_) in sys.processes() {
                writeln!(
                    &mut io::stdout(),
                    "{}:{} status={:?}",
                    pid,
                    proc_.name().to_string_lossy(),
                    proc_.status()
                );
            }
        }
        "frequency" => {
            for cpu in sys.cpus() {
                writeln!(
                    &mut io::stdout(),
                    "[{}] {} MHz",
                    cpu.name(),
                    cpu.frequency(),
                );
            }
        }
        "vendor_id" => {
            writeln!(
                &mut io::stdout(),
                "vendor ID: {}",
                sys.cpus()[0].vendor_id()
            );
        }
        "brand" => {
            writeln!(&mut io::stdout(), "brand: {}", sys.cpus()[0].brand());
        }
        "load_avg" => {
            let load_avg = System::load_average();
            writeln!(&mut io::stdout(), "one minute     : {}%", load_avg.one);
            writeln!(&mut io::stdout(), "five minutes   : {}%", load_avg.five);
            writeln!(&mut io::stdout(), "fifteen minutes: {}%", load_avg.fifteen);
        }
        e if e.starts_with("show ") => {
            let tmp: Vec<&str> = e.split(' ').collect();

            if tmp.len() != 2 {
                writeln!(
                    &mut io::stdout(),
                    "show command takes a pid or a name in parameter!"
                );
                writeln!(&mut io::stdout(), "example: show 1254");
            } else if let Ok(pid) = Pid::from_str(tmp[1]) {
                match sys.process(pid) {
                    Some(p) => writeln!(&mut io::stdout(), "{:?}", *p),
                    None => writeln!(&mut io::stdout(), "pid \"{pid:?}\" not found"),
                };
            } else {
                let proc_name = tmp[1];
                for proc_ in sys.processes_by_name(proc_name.as_ref()) {
                    writeln!(
                        &mut io::stdout(),
                        "==== {} ====",
                        proc_.name().to_string_lossy()
                    );
                    writeln!(&mut io::stdout(), "{proc_:?}");
                }
            }
        }
        "temperature" => {
            for component in components.iter() {
                writeln!(&mut io::stdout(), "{component:?}");
            }
        }
        "network" => {
            for (interface_name, data) in networks.iter() {
                writeln!(
                    &mut io::stdout(),
                    "{}:\n  ether {}\n  input data  (new / total): {} / {} B\n  output data (new / total): {} / {} B",
                    interface_name,
                    data.mac_address(),
                    data.received(),
                    data.total_received(),
                    data.transmitted(),
                    data.total_transmitted(),
                );
            }
        }
        "show" => {
            writeln!(
                &mut io::stdout(),
                "'show' command expects a pid number or a process name"
            );
        }
        e if e.starts_with("kill ") => {
            let tmp: Vec<&str> = e.split(' ').collect();

            if tmp.len() != 3 {
                writeln!(
                    &mut io::stdout(),
                    "kill command takes the pid and a signal number in parameter!"
                );
                writeln!(&mut io::stdout(), "example: kill 1254 9");
            } else {
                let pid = Pid::from_str(tmp[1]).unwrap();
                let signal = i32::from_str(tmp[2]).unwrap();

                if signal < 1 || signal > 31 {
                    writeln!(
                        &mut io::stdout(),
                        "Signal must be between 0 and 32 ! See the signals list with the \
                         signals command"
                    );
                } else {
                    match sys.process(pid) {
                        Some(p) => {
                            if let Some(res) =
                                p.kill_with(*signals.get(signal as usize - 1).unwrap())
                            {
                                writeln!(&mut io::stdout(), "kill: {res}");
                            } else {
                                writeln!(
                                    &mut io::stdout(),
                                    "kill: signal not supported on this platform"
                                );
                            }
                        }
                        None => {
                            writeln!(&mut io::stdout(), "pid not found");
                        }
                    };
                }
            }
        }
        "disks" => {
            for disk in disks {
                writeln!(&mut io::stdout(), "{disk:?}");
            }
        }
        "users" => {
            for user in users {
                writeln!(
                    &mut io::stdout(),
                    "{:?} => {:?}",
                    user.name(),
                    user.groups()
                );
            }
        }
        "boot_time" => {
            writeln!(&mut io::stdout(), "{} seconds", System::boot_time());
        }
        "uptime" => {
            let up = System::uptime();
            let mut uptime = up;
            let days = uptime / 86400;
            uptime -= days * 86400;
            let hours = uptime / 3600;
            uptime -= hours * 3600;
            let minutes = uptime / 60;
            writeln!(
                &mut io::stdout(),
                "{days} days {hours} hours {minutes} minutes ({up} seconds in total)",
            );
        }
        x if x.starts_with("refresh") => {
            if x == "refresh" {
                writeln!(&mut io::stdout(), "Getting processes' information...");
                sys.refresh_all();
                writeln!(&mut io::stdout(), "Done.");
            } else if x.starts_with("refresh ") {
                writeln!(&mut io::stdout(), "Getting process' information...");
                if let Some(pid) = x
                    .split(' ')
                    .filter_map(|pid| pid.parse().ok())
                    .take(1)
                    .next()
                {
                    if sys.refresh_processes(sysinfo::ProcessesToUpdate::Some(&[pid]), true) != 0 {
                        writeln!(&mut io::stdout(), "Process `{pid}` updated successfully");
                    } else {
                        writeln!(&mut io::stdout(), "Process `{pid}` couldn't be updated...");
                    }
                } else {
                    writeln!(&mut io::stdout(), "Invalid [pid] received...");
                }
            } else {
                writeln!(
                    &mut io::stdout(),
                    "\"{x}\": Unknown command. Enter 'help' if you want to get the commands' \
                     list.",
                );
            }
        }
        "pid" => {
            writeln!(
                &mut io::stdout(),
                "PID: {}",
                sysinfo::get_current_pid().expect("failed to get PID")
            );
        }
        "system" => {
            writeln!(
                &mut io::stdout(),
                "System name:              {}\n\
                 System kernel version:    {}\n\
                 System OS version:        {}\n\
                 System OS (long) version: {}\n\
                 System host name:         {}",
                System::name().unwrap_or_else(|| "<unknown>".to_owned()),
                System::kernel_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::os_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::long_os_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::host_name().unwrap_or_else(|| "<unknown>".to_owned()),
            );
        }
        e => {
            writeln!(
                &mut io::stdout(),
                "\"{e}\": Unknown command. Enter 'help' if you want to get the commands' \
                 list.",
            );
        }
    }
    false
}
Source

pub fn groups(&self) -> Vec<Group>

Returns the groups of the user.

⚠️ This is computed every time this method is called.

use sysinfo::Users;

let users = Users::new_with_refreshed_list();
for user in users.list() {
    println!("{} is in {:?}", user.name(), user.groups());
}
Examples found in repository?
examples/simple.rs (line 378)
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fn interpret_input(
    input: &str,
    sys: &mut System,
    networks: &mut Networks,
    disks: &mut Disks,
    components: &mut Components,
    users: &mut Users,
) -> bool {
    match input.trim() {
        "help" => print_help(),
        "refresh_disks" => {
            writeln!(&mut io::stdout(), "Refreshing disk list...");
            disks.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_users" => {
            writeln!(&mut io::stdout(), "Refreshing user list...");
            users.refresh();
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_networks" => {
            writeln!(&mut io::stdout(), "Refreshing network list...");
            networks.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_components" => {
            writeln!(&mut io::stdout(), "Refreshing component list...");
            components.refresh(true);
            writeln!(&mut io::stdout(), "Done.");
        }
        "refresh_cpu" => {
            writeln!(&mut io::stdout(), "Refreshing CPUs...");
            sys.refresh_cpu_all();
            writeln!(&mut io::stdout(), "Done.");
        }
        "signals" => {
            let mut nb = 1i32;

            for sig in signals {
                writeln!(&mut io::stdout(), "{nb:2}:{sig:?}");
                nb += 1;
            }
        }
        "cpus" => {
            // Note: you should refresh a few times before using this, so that usage statistics
            // can be ascertained
            writeln!(
                &mut io::stdout(),
                "number of physical cores: {}",
                sys.physical_core_count()
                    .map(|c| c.to_string())
                    .unwrap_or_else(|| "Unknown".to_owned()),
            );
            writeln!(
                &mut io::stdout(),
                "total CPU usage: {}%",
                sys.global_cpu_usage(),
            );
            for cpu in sys.cpus() {
                writeln!(&mut io::stdout(), "{cpu:?}");
            }
        }
        "memory" => {
            writeln!(
                &mut io::stdout(),
                "total memory:     {: >10} KB",
                sys.total_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "available memory: {: >10} KB",
                sys.available_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "used memory:      {: >10} KB",
                sys.used_memory() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "total swap:       {: >10} KB",
                sys.total_swap() / 1_000
            );
            writeln!(
                &mut io::stdout(),
                "used swap:        {: >10} KB",
                sys.used_swap() / 1_000
            );
        }
        "quit" | "exit" => return true,
        "all" => {
            for (pid, proc_) in sys.processes() {
                writeln!(
                    &mut io::stdout(),
                    "{}:{} status={:?}",
                    pid,
                    proc_.name().to_string_lossy(),
                    proc_.status()
                );
            }
        }
        "frequency" => {
            for cpu in sys.cpus() {
                writeln!(
                    &mut io::stdout(),
                    "[{}] {} MHz",
                    cpu.name(),
                    cpu.frequency(),
                );
            }
        }
        "vendor_id" => {
            writeln!(
                &mut io::stdout(),
                "vendor ID: {}",
                sys.cpus()[0].vendor_id()
            );
        }
        "brand" => {
            writeln!(&mut io::stdout(), "brand: {}", sys.cpus()[0].brand());
        }
        "load_avg" => {
            let load_avg = System::load_average();
            writeln!(&mut io::stdout(), "one minute     : {}%", load_avg.one);
            writeln!(&mut io::stdout(), "five minutes   : {}%", load_avg.five);
            writeln!(&mut io::stdout(), "fifteen minutes: {}%", load_avg.fifteen);
        }
        e if e.starts_with("show ") => {
            let tmp: Vec<&str> = e.split(' ').collect();

            if tmp.len() != 2 {
                writeln!(
                    &mut io::stdout(),
                    "show command takes a pid or a name in parameter!"
                );
                writeln!(&mut io::stdout(), "example: show 1254");
            } else if let Ok(pid) = Pid::from_str(tmp[1]) {
                match sys.process(pid) {
                    Some(p) => writeln!(&mut io::stdout(), "{:?}", *p),
                    None => writeln!(&mut io::stdout(), "pid \"{pid:?}\" not found"),
                };
            } else {
                let proc_name = tmp[1];
                for proc_ in sys.processes_by_name(proc_name.as_ref()) {
                    writeln!(
                        &mut io::stdout(),
                        "==== {} ====",
                        proc_.name().to_string_lossy()
                    );
                    writeln!(&mut io::stdout(), "{proc_:?}");
                }
            }
        }
        "temperature" => {
            for component in components.iter() {
                writeln!(&mut io::stdout(), "{component:?}");
            }
        }
        "network" => {
            for (interface_name, data) in networks.iter() {
                writeln!(
                    &mut io::stdout(),
                    "{}:\n  ether {}\n  input data  (new / total): {} / {} B\n  output data (new / total): {} / {} B",
                    interface_name,
                    data.mac_address(),
                    data.received(),
                    data.total_received(),
                    data.transmitted(),
                    data.total_transmitted(),
                );
            }
        }
        "show" => {
            writeln!(
                &mut io::stdout(),
                "'show' command expects a pid number or a process name"
            );
        }
        e if e.starts_with("kill ") => {
            let tmp: Vec<&str> = e.split(' ').collect();

            if tmp.len() != 3 {
                writeln!(
                    &mut io::stdout(),
                    "kill command takes the pid and a signal number in parameter!"
                );
                writeln!(&mut io::stdout(), "example: kill 1254 9");
            } else {
                let pid = Pid::from_str(tmp[1]).unwrap();
                let signal = i32::from_str(tmp[2]).unwrap();

                if signal < 1 || signal > 31 {
                    writeln!(
                        &mut io::stdout(),
                        "Signal must be between 0 and 32 ! See the signals list with the \
                         signals command"
                    );
                } else {
                    match sys.process(pid) {
                        Some(p) => {
                            if let Some(res) =
                                p.kill_with(*signals.get(signal as usize - 1).unwrap())
                            {
                                writeln!(&mut io::stdout(), "kill: {res}");
                            } else {
                                writeln!(
                                    &mut io::stdout(),
                                    "kill: signal not supported on this platform"
                                );
                            }
                        }
                        None => {
                            writeln!(&mut io::stdout(), "pid not found");
                        }
                    };
                }
            }
        }
        "disks" => {
            for disk in disks {
                writeln!(&mut io::stdout(), "{disk:?}");
            }
        }
        "users" => {
            for user in users {
                writeln!(
                    &mut io::stdout(),
                    "{:?} => {:?}",
                    user.name(),
                    user.groups()
                );
            }
        }
        "boot_time" => {
            writeln!(&mut io::stdout(), "{} seconds", System::boot_time());
        }
        "uptime" => {
            let up = System::uptime();
            let mut uptime = up;
            let days = uptime / 86400;
            uptime -= days * 86400;
            let hours = uptime / 3600;
            uptime -= hours * 3600;
            let minutes = uptime / 60;
            writeln!(
                &mut io::stdout(),
                "{days} days {hours} hours {minutes} minutes ({up} seconds in total)",
            );
        }
        x if x.starts_with("refresh") => {
            if x == "refresh" {
                writeln!(&mut io::stdout(), "Getting processes' information...");
                sys.refresh_all();
                writeln!(&mut io::stdout(), "Done.");
            } else if x.starts_with("refresh ") {
                writeln!(&mut io::stdout(), "Getting process' information...");
                if let Some(pid) = x
                    .split(' ')
                    .filter_map(|pid| pid.parse().ok())
                    .take(1)
                    .next()
                {
                    if sys.refresh_processes(sysinfo::ProcessesToUpdate::Some(&[pid]), true) != 0 {
                        writeln!(&mut io::stdout(), "Process `{pid}` updated successfully");
                    } else {
                        writeln!(&mut io::stdout(), "Process `{pid}` couldn't be updated...");
                    }
                } else {
                    writeln!(&mut io::stdout(), "Invalid [pid] received...");
                }
            } else {
                writeln!(
                    &mut io::stdout(),
                    "\"{x}\": Unknown command. Enter 'help' if you want to get the commands' \
                     list.",
                );
            }
        }
        "pid" => {
            writeln!(
                &mut io::stdout(),
                "PID: {}",
                sysinfo::get_current_pid().expect("failed to get PID")
            );
        }
        "system" => {
            writeln!(
                &mut io::stdout(),
                "System name:              {}\n\
                 System kernel version:    {}\n\
                 System OS version:        {}\n\
                 System OS (long) version: {}\n\
                 System host name:         {}",
                System::name().unwrap_or_else(|| "<unknown>".to_owned()),
                System::kernel_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::os_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::long_os_version().unwrap_or_else(|| "<unknown>".to_owned()),
                System::host_name().unwrap_or_else(|| "<unknown>".to_owned()),
            );
        }
        e => {
            writeln!(
                &mut io::stdout(),
                "\"{e}\": Unknown command. Enter 'help' if you want to get the commands' \
                 list.",
            );
        }
    }
    false
}

Trait Implementations§

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impl Debug for User

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Ord for User

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fn cmp(&self, other: &Self) -> Ordering

This method returns an [Ordering] between self and other. Read more
1.21.0§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for User

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for User

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0§

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0§

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0§

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for User

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for User

Auto Trait Implementations§

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impl Freeze for User

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impl RefUnwindSafe for User

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impl Send for User

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impl Sync for User

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impl Unpin for User

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impl UnwindSafe for User

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.