blob: 03424515e0dc23134ab6bd68bfc433f3f62a77bb (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
# Store up all input before emitting it unchanged as output
self=dam
# Create a temporary directory with name in $td, and handle POSIX-ish traps to
# remove it when the script exits.
td=
cleanup() {
[ -n "$td" ] && rm -fr -- "$td"
if [ "$1" != EXIT ] ; then
trap - "$1"
kill "-$1" "$$"
fi
}
for sig in EXIT HUP INT TERM ; do
# shellcheck disable=SC2064
trap "cleanup $sig" "$sig"
done
td=$(mktd "$self") || exit
# We'll operate on stdin in the temp directory; write the script's stdin to it
# with cat(1)
cat -- "${@:-}" >"$td"/stdin
# Only when that write is finished do we finally spit it all back out again
cat -- "$td"/stdin
|
