What is killall Linux?
The killall command in Linux is a utility command used for killing any running process on the system based on a given name. This command will terminate the processes forcibly when a specified name matches. The easiest way to kill a bunch of processes altogether is through the killall command.
What command is used to send a signal to one or more processes matching the selection criteria?
The pkill command sends a signal to one or more processes, using the same flexible selection methods as pgrep.
When to use kill, killall, and pkill?
The kill command is in the format of kill signal processid. The kill and killall commands are used to kill the specified processes. Warning! The kill and killall commands are extremely powerful. If they are misused they can bring a server down. If you are new to these two commands it is recommended that you learn on a non production server.
What’s the difference between kill and killall in Linux?
kill and killall are tools which provide a way to kill a process. The first by its PID, the second by its name. …unless you’re on Solaris, in which case killall will kill all processes you have the right to kill, so that if you’re root, you’re effectively rebooting the server.
What does the killall command do in Aix?
Here’s a description of that version, from a manpage for IBM’s AIX: The killall command cancels all processes that you started, except those producing the killall process. This command provides a convenient means of canceling all processes created by the shell that you control.
Where did pkill and killall come from in Solaris 7?
The pkill/pgrep man page says they were introduced in Solaris 7. As you mention, jgbelacqua, Solaris’s killall was not the utility psmisc provides, thus Solaris probably only had the procps package. Someone wanted a pattern matching process tool, thus pkill and pgrep.