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Display the kill signal

Display the kill signal

The kill command not only kills the process, but it can also control various other things.
The signals used for this control are called signals, and there are numbers, names, and abbreviations that can be used for control.
To check which signals can be used with the kill command, execute the kill command with the option "-l".

[root@Lion ~]# kill -l
1) SIGHUP 2) SIGINT 3) SIGQUIT 4) SIGILL 5) SIGTRAP
6) SIGABRT 7) SIGBUS 8) SIGFPE 9) SIGKILL 10) SIGUSR1
11) SIGSEGV 12) SIGUSR2 13) SIGPIPE 14) SIGALRM 15) SIGTERM
16) SIGSTKFLT 17) SIGCHLD 18) SIGCONT 19) SIGSTOP 20) SIGTSTP
21) SIGTTIN 22) SIGTTOU 23) SIGURG 24) SIGXCPU 25) SIGXFSZ
26) SIGVTALRM 27) SIGPROF 28) SIGWINCH 29) SIGIO 30) SIGPWR
31) SIGSYS 34) SIGRTMIN 35) SIGRTMIN+1 36) SIGRTMIN+2 37) SIGRTMIN+3
38) SIGRTMIN+4 39) SIGRTMIN+5 40) SIGRTMIN+6 41) SIGRTMIN+7 42) SIGRTMIN+8
43) SIGRTMIN+9 44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13
48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-12
53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9 56) SIGRTMAX-8 57) SIGRTMAX-7
58) SIGRTMAX-6 59) SIGRTMAX-5 60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-2
63) SIGRTMAX-1 64) SIGRTMAX

Typical kill signals
・Signal Number:1 Signal Name:SIGHUP abbreviation:HUP
Hang-up (reboot):The same signal as when the control terminal hangs up, used after the configuration file is updated.

・Signal Number:2 Signal Name:SIGINT abbreviation:INT
interruption:The same signal as when the Ctrl+c key is pressed.

・Signal Number:9 Signal Name:SIGKILL abbreviation:KILL
forced termination

・Signal Number:15 Signal Name:SIGTERM abbreviation:TERM
Exit (default):Just as if you had run it with no arguments.

・Signal Number:17 Signal Name:SIGSTOP abbreviation:STOP
Interruptions

・Signal Number:19 Signal Name:SIGCONT abbreviation:CONT
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