NAME
protect —
protect processes from being killed
when swap space is exhausted
SYNOPSIS
protect |
[-i] command |
protect |
[-cdi] -g
pgrp | -p
pid |
DESCRIPTION
Theprotect command is used to mark processes as
protected. The kernel does not kill protected processes when swap space is
exhausted. Note that this protected state is not inherited by child processes
by default.
The options are:
-c- Remove protection from the specified processes.
-d- Apply the operation to all current children of the specified processes.
-i- Apply the operation to all future children of the specified processes.
-gpgrp- Apply the operation to all processes in the specified process group.
-ppid- Apply the operation to the specified process.
- command
- Execute command as a protected process.
Note that only one of the -p or
-g flags may be specified when adjusting the state
of existing processes.
EXIT STATUS
The protect utility exits 0 on
success, and >0 if an error occurs.
EXAMPLES
Mark the Xorg server as protected:
pgrep Xorg | xargs protect
-pProtect all ssh sessions and their child processes:
pgrep sshd | xargs protect
-dipRemove protection from all current and future processes:
protect -cdi -p 1SEE ALSO
BUGS
If you protect a runaway process that allocates all memory the system will deadlock.