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COMMAND* Name of the process, including arguments, if any NI: nice value F: Flags PID: Process ID number PPID: ID number of the process's parent process PRI: Priority of the process RSS: Resident set size: S or STAT: Process status code START or STIME: Time when the process started VSZ: Virtual memory usage TIME: The amount of CPU time used by ...
pstree is a Linux command that shows the running processes as a tree. It is used as a more visual alternative to the ps command. The root of the tree is either init or the process with the given pid. It can also be installed in other Unix systems. In BSD systems, a similar output is created using ps -d, in Linux ps axjf [1] produces similar output.
In computing, the process identifier (a.k.a. process ID or PID) is a number used by most operating system kernels—such as those of Unix, macOS and Windows—to uniquely identify an active process. This number may be used as a parameter in various function calls, allowing processes to be manipulated, such as adjusting the process's priority or ...
Shell, the standard command language interpreter Version 7 AT&T UNIX (in earlier versions, sh was either the Thompson shell or the PWB shell) sleep: Shell programming Mandatory Suspend execution for an interval Version 4 AT&T UNIX sort: Text processing Mandatory Sort, merge, or sequence check text files Version 1 AT&T UNIX split: Misc Mandatory
After Linux kernel 3.4 this is no longer true, in fact processes can issue the prctl() system call with the PR_SET_CHILD_SUBREAPER option, and as a result they, not process #1, will become the parent of any of their orphaned descendant processes. This is the way of working of modern service managers and daemon supervision utilities including ...
The Linux Namespaces originated in 2002 in the 2.4.19 kernel with work on the mount namespace kind. Additional namespaces were added beginning in 2006 [ 3 ] and continuing into the future. Adequate containers support functionality was finished in kernel version 3.8 [ 4 ] [ 5 ] with the introduction of User namespaces.
The place command is simple. You tell your dog to get in their bed and to stay there. Most dogs, especially before learning the command, will test the waters to see if they can get out of it as ...
When a command is terminated by a signal whose number is N, a shell sets the variable $? to a value greater than 128. Most shells use 128+N, while ksh93 uses 256+N. If a command is not found, the shell should return a status of 127. If a command is found but is not executable, the return status should be 126. [2]