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mkimage-arch: use hash to check if command is available

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Apart from having more predictable return codes on various operating
systems, it additionally caches the path to application.

Docker-DCO-1.1-Signed-off-by: Bartłomiej Piotrowski <b@bpiotrowski.pl> (github: Barthalion)
This commit is contained in:
Bartłomiej Piotrowski 2014-01-06 13:36:04 +01:00
parent da4ba80733
commit 787ff55283
1 changed files with 2 additions and 4 deletions
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6
contrib/mkimage-arch.sh
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@ -4,14 +4,12 @@
# requires root
set -e
PACSTRAP=$(hash pacstrap &>/dev/null)
[ "$PACSTRAP" ] || {
hash pacstrap &>/dev/null || {
echo "Could not find pacstrap. Run pacman -S arch-install-scripts"
exit 1
}
EXPECT=$(hash expect &>/dev/null)
[[ "$EXPECT" ]] || {
hash expect &>/dev/null || {
echo "Could not find expect. Run pacman -S expect"
exit 1
}