waitpid.1

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.TH WAITPID 1  "March 2014" "waitpid 0.3" "User Commands"
.SH NAME
waitpid \- wait for process termination
.SH SYNOPSIS
.B waitpid
[\fIOPTION\fR]... \fIPID\fR...
.SH DESCRIPTION
Wait until all the specified processes have exited.
.TP
\fB\-f\fR, \fB\-\-force\fR
do not fail if one of the PID specified does not correspond to a running
process
.TP
\fB\-s\fR, \fB\-\-sleep\-interval\fR=\fIN\fR
when
.BR ptrace (2)
is not available, check for the existence of the processes every
.I N
seconds (default: 0.5)
.TP
\fB\-v\fR, \fB\-\-verbose\fR
display a message on the standard output every time a process exits or receives
a signal
.TP
\fB\-h\fR, \fB\-\-help\fR
display this help and exit
.TP
\fB\-\-version\fR
output version information and exit
.SH NOTES
When possible, this program will use the
.BR ptrace (2)
system call to wait for programs. With
.BR ptrace (2)
the
.B --sleep-interval
option is ignored, as events are reported immediately. Additionally, if
.B --verbose
is specified, the program will display exit statuses and signals received by
the processes.

If
.BR ptrace (2)
is not available, processes are checked periodically,
.B --sleep-interval
is not ignored and
.B --verbose
does not report detailed information about exit statuses and signals received.
.SH AUTHOR
Written by Andrea Corbellini <corbellini.andrea@gmail.com>.
.SH "REPORTING BUGS"
Report bugs to https://github.com/andrea-corbellini/waitpid
.SH COPYRIGHT
Copyright (c) 2012-2015 Andrea Corbellini. This software is released under the
BSD 2-clause license. This is free software: you are free to change and
redistribute it. There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
.BR ptrace (2)