Craig Sanders <cas@taz.net.au> wrote:
On Thu, Dec 12, 2013 at 10:33:32PM +1100, Allan Duncan wrote:
I have a rc.local script that runs fine in csh, but I'd like to change it to sh, but I've had no success at it.
#! /usr/bin/tcsh if `ping -w 1 -c 1 -n 192.168.1.3 | grep -o "1 packets"` == "1 packets" mount /nfs/bulk2
the simplest conversion to sh (with some fixes*) would be something like:
#!/bin/sh if $(ping -w 1 -c 1 -n 192.168.1.3 | grep -q "1 packets") ; then mount /nfs/bulk2 fi
You shouldn't have the $() here at all. They're unnecessary and cause confusion. Remove them. Further, don't bother checking ping's output with grep's return code. Check ping's return code instead: If ping -w1 -c1 -n 192.168.3.1 >/dev/null 2&>1; then
or as a one-liner:
#!/bin/sh ping -w 1 -c 1 -n 192.168.1.3 | grep -q "1 packets" && mount /nfs/bulk2
Again, grep unnecessary. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.