proc_cli/commands/
kill.rs

1//! `proc kill` - Kill processes
2//!
3//! Examples:
4//!   proc kill node              # Kill the processes named node
5//!   proc kill node --cmd        # ... or with node anywhere in their command line
6//!   proc kill :3000             # Kill what's on port 3000
7//!   proc kill 1234              # Kill specific PID
8//!   proc kill 1234 5678         # Kill several targets: separate arguments
9//!   proc kill :3000 :8080 node  # Mixed targets (port + port + name)
10//!   proc kill node --dry-run    # Show what would be killed, kill nothing
11//!   proc kill :3000 --yes       # Skip confirmation (a port or PID, not a name)
12//!
13//! Commas still work (`proc kill :3000,:8080`) but are deprecated.
14
15use crate::core::{
16    apply_to_each, flatten_targets, guard_targets, resolve_targets_excluding_self, Guards,
17    NameMatch, Process,
18};
19use crate::error::{ProcError, Result};
20use crate::ui::Printer;
21use clap::Args;
22
23/// Kill process(es)
24#[derive(Args, Debug)]
25pub struct KillCommand {
26    /// Target(s): process name, PID, or :port (separate arguments for several)
27    #[arg(required = true, num_args = 1.., value_parser = crate::core::validate_target_arg)]
28    pub target: Vec<String>,
29
30    /// Skip confirmation prompt
31    #[arg(long, short = 'y')]
32    pub yes: bool,
33
34    /// Show what would be killed without actually killing
35    #[arg(long)]
36    pub dry_run: bool,
37
38    /// Output as JSON
39    #[arg(long, short = 'j')]
40    pub json: bool,
41
42    /// Show verbose output
43    #[arg(long, short = 'v')]
44    pub verbose: bool,
45
46    /// Send SIGTERM instead of SIGKILL (graceful)
47    #[arg(long, short = 'g')]
48    pub graceful: bool,
49
50    /// Filter by directory; takes the next word as the directory unless it starts with '-'
51    /// (bare --in is the current directory, --in=DIR is explicit)
52    #[arg(long = "in", short = 'i', num_args = 0..=1, default_missing_value = ".")]
53    pub in_dir: Option<String>,
54
55    /// Filter by process name
56    #[arg(long = "by", short = 'b')]
57    pub by_name: Option<String>,
58
59    /// Act only if the process still has this start time (Unix seconds, `start_time`
60    /// in its JSON): a PID the OS gave to a new process is ruled out. One PID target
61    #[arg(long = "start-time", value_name = "SECONDS")]
62    pub start_time: Option<u64>,
63
64    /// Match name targets and --by as a substring of the process name or full command line (like pkill -f)
65    #[arg(long)]
66    pub cmd: bool,
67}
68
69impl KillCommand {
70    /// Executes the kill command, forcefully terminating matched processes.
71    pub fn execute(&self) -> Result<()> {
72        let printer = Printer::from_flags(self.json, self.verbose);
73
74        // Split each value on commas and resolve to processes
75        // Use resolve_targets_excluding_self to avoid killing ourselves
76        let targets = flatten_targets(&self.target);
77        let mode = NameMatch::from_flag(self.cmd);
78        let resolved = resolve_targets_excluding_self(&targets, mode);
79
80        // Warn about targets that weren't found
81        if let Some(warning) = resolved.warning() {
82            printer.warning(&warning);
83        }
84        // the JSON results list the targets that matched nothing
85        let printer = printer.with_not_found(&resolved.not_found);
86        let mut processes = resolved.processes;
87
88        // Apply --in and --by: guards that rule out everything found say so
89        let guards = Guards::new(&self.in_dir, &self.by_name, self.start_time);
90        guard_targets(&mut processes, &self.target, &guards, mode)?;
91
92        // Real CPU readings whenever the list is shown or returned (dry run, the
93        // confirmation prompt, or the error for a missing `--yes`); only `--yes`
94        // acts at once, without the wait
95        if self.dry_run || !self.yes {
96            Process::measure_cpu(&mut processes);
97        }
98
99        if processes.is_empty() {
100            return Err(ProcError::ProcessNotFound(self.target.join(" ")));
101        }
102
103        // Dry run: just show what would be killed
104        if self.dry_run {
105            printer.print_dry_run("kill", &processes);
106            return Ok(());
107        }
108
109        // Confirm before killing (unless --yes)
110        if !printer.ask_confirm("kill", &processes, self.yes)? {
111            return Ok(());
112        }
113
114        // Kill the processes
115        let (killed, failed) = apply_to_each(&processes, |proc| {
116            if self.graceful {
117                proc.terminate()
118            } else {
119                proc.kill()
120            }
121        });
122
123        printer.print_action_result("kill", &killed, &failed)
124    }
125}
proc_cli/commands/kill.rs

proc_cli/commands/
kill.rs
