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#!/bin/sh
#
# Generally, utilities that I expected to exist in POSIX, but don't.
#
uuid() {
# Taken from:
# https://serverfault.com/a/799198
od -xN20 /dev/urandom |
head -n1 |
awk '{OFS="-"; print $2$3,$4,$5,$6,$7$8$9}'
}
tmpname() {
echo 'mkstemp(template)' | m4 -D template="${TMPDIR:-/tmp}/m4-tmpname."
}
mkstemp() {
name="$(tmpname)"
touch "$name"
echo "$name"
}
mkdtemp() {
name="$(tmpname)"
rm -f "$name"
mkdir "$name"
echo "$name"
}
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