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killall is a command line utility available on Unix-like systems. There are two very different implementations. The implementation supplied with genuine UNIX System V (including Solaris) and Linux sysvinit tools kills all processes that the user is able to kill, potentially shutting down the system if run by root.
pkill - signals processes based on name and other attributes. It was introduced in Solaris 7 and has since been reimplemented for Linux, NetBSD and OpenBSD. pkill makes killing processes based on their name much more convenient: e.g. to kill a process named firefox without pkill (and without pgrep), one would have to type kill `ps --no-headers ...
The process sets these time limits by calling alarm or setitimer. The time limit for SIGALRM is based on real or clock time; SIGVTALRM is based on CPU time used by the process; and SIGPROF is based on CPU time used by the process and by the system on its behalf (known as a profiling timer).
kill, which sends signals processes by process ID instead of by pattern-matching against the name. renice, which changes the priority of a process. top and htop, which display a list of processes and their resource usage; htop can send signals to processes directly from this list. skill, a command-line utility to send signals or report process ...
time: Process management Mandatory Retrieve and format time and date Version 3 AT&T UNIX timeout: Process management Mandatory Run command with a time limit Version 3 AT&T UNIX touch: Filesystem Mandatory Change file access and modification times Version 7 AT&T UNIX tput: Misc Mandatory Change terminal characteristics System V tr: Text ...
time — Run command line and report real, user, and system time elapsed in seconds. timeout — Run command line as a child process, sending child a signal if the command doesn't exit soon enough. top — Show process activity in real time. touch — Update the access and modification times of each FILE to the current time. true — Return zero.
Send the SIGTERM signal to all processes except init (PID 1) e. e: f: Call oom_kill, which kills a process to alleviate an OOM condition f: u: f: t: When using Kernel Mode Setting, switch to the kernel's framebuffer console. [5] If the in-kernel debugger kdb is present, enter the debugger. g: i: g: d: Output a terse help document to the console
The parent may, for example, wait for the child to terminate with the waitpid() function, or terminate the process with kill(). There are two tasks with specially distinguished process IDs: PID 0 is used for swapper or sched , which is part of the kernel and is a process that runs on a CPU core whenever that CPU core has nothing else to do. [ 1 ]