mount-crypts: use sh more thoroughly

1 files changed, 9 insertions, 7 deletions

diff --git a/mount-crypts b/mount-crypts
index 08b1975..b7ba106 100755
--- a/mount-crypts
+++ b/mount-crypts
@@ -1,14 +1,16 @@
 #!/bin/bash
 
-i=1
 maxWait=60
 
-while [ $i -le $(sed "s/#.*$//" /etc/crypttab | grep -vc '^ *$') ]; do
-  s="$(sed "s/#.*$//" /etc/crypttab | grep -v '^ *$' | tail -n$i | head -n1 | sed "s/  */ /g")"
-  i=$((i+1))
-  name=$(echo $s | awk '{print $1}')
-  device=$(echo $s | awk '{print $2}')
-  key=$(echo $s | awk '{print $3}')
+sed 's/#.*$//' /etc/crypttab \
+| grep -v '^ *$' \
+| if [ "x$1" = 'x-u' ]; then
+  tac
+else
+  cat
+fi \
+| while read -r name device key; do
+
   while [ ${maxWait} -gt 0 ] && [ ! -b "${device}" ]; do
     sleep 1
     maxWait=$[${maxWait}-1]