pipe exit statuses

[der.hans]

moin, moin,

learned something cool about bash today. It's something that I've wished
for several times.

${PIPESTATUS[]} is an array that keeps track of the exit statuses of the
commands in a pipeline.

###
$ ls anke 2>/dev/null | ls fred 2>/dev/null | ls anke 2>/dev/null | echo

$ echo ${PIPESTATUS[*]}
1 0 1 0
###

Also, just in case someone doesn't know, bash also has programmable
completion.

source /etc/bash_completion on debian-based systems.

ciao,

der.hans
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