IFTHENELSE(1)

NAME
ifthenelse - perform a conditional alternative

SYNOPSIS
In an execlineb(1) script:

ifthenelse [-X] [-s] { progif... } { progthen... } { progelse... } prog...

DESCRIPTION
ifthenelse reads progif..., progthen... and progelse... in 3 consecutive blocks ( cf. execline-block(7)).

ifthenelse runs progif... as a child process and waits for it to complete.

If progif... crashes (i.e. is killed by a signal), ifthenelse prints an error message, then exits 128 plus the number of the signal that killed progif.

If progif... exits zero, ifthenelse runs progthen... as a child process, else it runs progelse....

ifthenelse waits for its child to complete and puts the exit status in the? environment variable. It then exec(3) s into prog....

OPTIONS

-X  If progif crashes, do not exit; proceed as if it had returned false.

-s  Magic scoping hack. This option does powerful but ugly things, and is left undocumented on purpose.

SEE ALSO
background(1), backtick(1), foreground(1), if(1), ifelse(1), ifte(1), pipeline(1), runblock(1)

This man page is ported from the authoritative documentation at: https://skarnet.org/software/execline/ifthenelse.html

AUTHORS
Laurent Bercot Alexis <flexibeast@gmail.com> (man page port)