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PiShrink
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Remove bc dependency by replacing with expr

This commit is contained in:
Drew Bonasera 2016-04-27 04:32:22 -04:00
parent f4282842da
commit e3b321a9d7
1 changed files with 3 additions and 8 deletions
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11
pishrink.sh
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@ -22,11 +22,6 @@ if (( $? != 0 )); then
echo "ERROR: parted is not installed." echo "ERROR: parted is not installed."
exit -4 exit -4
fi fi
A=`which bc 2>&1`
if (( $? != 0 )); then
echo "ERROR: bc is not installed."
exit -5
fi
#Gather info #Gather info
beforesize=`ls -lah $img | cut -d ' ' -f 5` beforesize=`ls -lah $img | cut -d ' ' -f 5`
@ -53,7 +48,7 @@ umount $mountdir
#Shrink filesystem #Shrink filesystem
e2fsck -f $loopback e2fsck -f $loopback
minsize=`resize2fs -P $loopback | cut -d ':' -f 2 | tr -d ' '` minsize=`resize2fs -P $loopback | cut -d ':' -f 2 | tr -d ' '`
minsize=`echo $minsize+20000 | bc` minsize=`expr $minsize + 20000 | tr -d '\n'`
resize2fs -p $loopback $minsize resize2fs -p $loopback $minsize
if [[ $? != 0 ]]; then if [[ $? != 0 ]]; then
echo ERROR: resize2fs failed... echo ERROR: resize2fs failed...
@ -67,8 +62,8 @@ sleep 1
#Shrink partition #Shrink partition
losetup -d $loopback losetup -d $loopback
partnewsize=`echo "$minsize * 4096" | bc` partnewsize=`expr $minsize \* 4096 | tr -d '\n'`
newpartend=`echo "$partstart + $partnewsize" | bc` newpartend=`expr $partstart + $partnewsize | tr -d '\n'`
part1=`parted $img rm 2` part1=`parted $img rm 2`
part2=`parted $img unit B mkpart primary $partstart $newpartend` part2=`parted $img unit B mkpart primary $partstart $newpartend`