#Bash 的 kill 命令

kill [OPTION]... PID...

功能

向进程发送信号。

类型

可执行文件（/usr/bin/kill），属于 procps。

存在同名的内置命令 kill，因此需要输入完整路径执行此命令。

参数

OPTIONS 选项：
- -<signal>, -s <signal>, --signal <signal> - 指定要发送的信号（名称或编号）；默认发送 SIGTERM 信号
- -q, --queue value - 使用 sigqueue(3) 而不是 kill(2) 来发送信号
- -l, --list [signal] - 列出所有信号的编号和名称；如果指定了 signal，则将编号和名称进行转换
- -L, --table - 以表格的形式列出所有信号的编号和名称
PID - 要杀死的进程 PID

#示例

查看所有信号

$ /usr/bin/kill -l
HUP INT QUIT ILL TRAP ABRT BUS FPE KILL USR1 SEGV USR2 PIPE ALRM TERM STKFLT
CHLD CONT STOP TSTP TTIN TTOU URG XCPU XFSZ VTALRM PROF WINCH POLL PWR SYS
$ /usr/bin/kill -L
 1 HUP      2 INT      3 QUIT     4 ILL      5 TRAP     6 ABRT     7 BUS
 8 FPE      9 KILL    10 USR1    11 SEGV    12 USR2    13 PIPE    14 ALRM
15 TERM    16 STKFLT  17 CHLD    18 CONT    19 STOP    20 TSTP    21 TTIN
22 TTOU    23 URG     24 XCPU    25 XFSZ    26 VTALRM  27 PROF    28 WINCH
29 POLL    30 PWR     31 SYS

发送信号

$ /usr/bin/killl -9 2305701            # 向 PID 为 2305701 的进程发送 SIGKILL 信号

信号的编号与名称转换

$ /usr/bin/killl -l 9
KILL
$ /usr/bin/killl -l KILL
9

#推荐阅读

kill(1) — Linux manual page

#手册

KILL(1)                          User Commands                         KILL(1)

NAME
       kill - send a signal to a process

SYNOPSIS
       kill [options] <pid> [...]

DESCRIPTION
       The  default  signal  for kill is TERM.  Use -l or -L to list available
       signals.  Particularly useful signals include  HUP,  INT,  KILL,  STOP,
       CONT,  and  0.   Alternate  signals may be specified in three ways: -9,
       -SIGKILL or -KILL.  Negative PID values may be  used  to  choose  whole
       process  groups; see the PGID column in ps command output.  A PID of -1
       is special; it indicates all processes except the kill  process  itself
       and init.

OPTIONS
       <pid> [...]
              Send signal to every <pid> listed.

       -<signal>
       -s <signal>
       --signal <signal>
              Specify  the  signal to be sent.  The signal can be specified by
              using name or number.  The behavior of signals is  explained  in
              signal(7) manual page.

       -q, --queue value
              Use  sigqueue(3)  rather  than kill(2) and the value argument is
              used to specify an integer to be sent with the  signal.  If  the
              receiving  process has installed a handler for this signal using
              the SA_SIGINFO flag to sigaction(2), then  it  can  obtain  this
              data via the si_value field of the siginfo_t structure.

       -l, --list [signal]
              List  signal  names.   This  option has optional argument, which
              will convert signal number to signal name, or other way round.

       -L, --table
              List signal names in a nice table.

       NOTES  Your shell (command line interpreter) may have a  built-in  kill
              command.   You  may  need  to  run the command described here as
              /bin/kill to solve the conflict.

EXAMPLES
       kill -9 -1
              Kill all processes you can kill.

       kill -l 11
              Translate number 11 into a signal name.

       kill -L
              List the available signal choices in a nice table.

       kill 123 543 2341 3453
              Send the default signal, SIGTERM, to all those processes.

SEE ALSO
       kill(2),   killall(1),   nice(1),   pkill(1),   renice(1),   signal(7),
       sigqueue(3), skill(1)

STANDARDS
       This  command  meets  appropriate  standards. The -L flag is Linux-spe‐
       cific.

AUTHOR
       Albert Cahalan wrote kill in 1999 to replace a bsdutils  one  that  was
       not standards compliant.  The util-linux one might also work correctly.

REPORTING BUGS
       Please send bug reports to [email protected]

procps-ng                         2023-01-16                           KILL(1)

#Bash 的 kill 命令

#示例

#推荐阅读

#手册

显示