ash scripting: space-containing variable refuses to be grepped
- by Luci Sandor
I am trying to run the script listed at http://talk.maemo.org/showthread.php?t=70866&page=2 on its intended hardware, a Nokia Linux phone running BusyBox ash.
The script receives the name of WiFi network as a parameter, and tries to connect the phone to it. I suspect the script works, but my SSID, BU (802.1x), has space and parentheses in it. So when I type at the command prompt
autoconnect.sh BU\ \(802.1x\)
I get various errors.
First,
LIST=`iwconfig wlan0 | awk -F":" '/ESSID/{print $2}'`
if [ $LIST = "\"$1\"" ]; then
...fails, even I am connected to the network. The error is not avoided by using single or double quotes instead of escaping characters at the command prompt.
Second,
if [ -z `iwlist wlan0 scan | grep -m 1 -o \"$1\"` ]; then
echo SSID \"$1\" not found;
shows that grep does not find the string, although the same grep, typed directly into the command prompt, does find 'BU (802.1x)'.
How do I quote $1 in the two circumstances above so that it will work with my network SSID, containing spaces and parentheses?
Thank you.
