Linux skill command details how to use Linux skill command

The Linux skill command sends a signal to the program being executed. The preset message is TERM (interrupted), and the commonly used messages are HUP, INT, KILL, STOP, CONT, and 0.

Message Syntax:-9,-SIGKILL, and-KILL. You can use-l or-L to list available messages.

Permission: all users.

Other related commands: kill

Syntax

Skill [signal to send] [options] Select program rules

General parameters:

• -F fast mode/not completed
• -I interaction mode/each action is to be confirmed
• -V: detailed output/list information of the selected program
• -W Smart warning message/not completed
• -N no action/show program code

Parameter: the rule for selecting a program can be the terminal code, user name, program code, and command name.

• -T Terminal Code (tty or pty)
• -U user name
• -P program code (pid)
• -Signals available for the c command name

The following lists known signal names, signal codes, and functions.

Name (code)	Function/description
ALRM 14	Leave
HUP 1	Leave
INT 2	Leave
KILL 9	Exit/force close
PIPE 13	Leave
POLL	Leave
PROF	Leave
TERM 15	Leave
USR1	Leave
USR2	Leave
VTALRM	Leave
STKFLT	Exit/only applicable to i386, m68k, arm, and ppc hardware
UNUSED	Exit/only applicable to i386, m68k, arm, and ppc hardware
TSTP	Stop/generate content-related behaviors
TTIN	Stop/generate content-related behaviors
TTOU	Stop/generate content-related behaviors
STOP	Stop/force close
CONT	Restart/restart if it is in the stopped status; otherwise, ignore
PWR	Ignore/leave in some systems
WINCH	Ignore
CHLD	Ignore
ABRT 6	Core
FPE 8	Core
ILL 4	Core
QUIT 3	Core
SEGV 11	Core
TRAP 5	Core
SYS	Core/perhaps not yet implemented
EMTs	Core/perhaps not yet implemented
BUS	Core/core failure
XCPU	Core/core failure
XFSZ	Core/core failure

Instance

Stop all programs on the PTY device

Skill-KILL-v pts /*

Stop three users: user1, user2, and user3

Skill-STOP user1 user2 user3