Cleanly list available wireless networks (using iwlist)

iwlist wlan0 scan | sed -ne 's#^[[:space:]]*\(Quality=\|Encryption key:\|ESSID:\)#\1#p' -e 's#^[[:space:]]*\(Mode:.*\)$#\1\n#p'
Default interface is wlan0, change as appropriate. This simply strips all the noise from the iwlist output in order to make it easier to skim. It makes sense to make this a very simple shell function, replacing the iwlist call with something like: iwlist "${1:-wlan0}" # append pipe etc. This makes wlan0 the default if the function receives no arguments.
Sample Output
Quality=34/70  Signal level=-76 dBm  
Encryption key:on
ESSID:"foobar"
Mode:Master

Quality=36/70  Signal level=-74 dBm  
Encryption key:on
ESSID:"WLAN-007AE3210EFF"
Mode:Master

0
2011-01-25 14:50:34
sed

What Others Think

Exactly what I was looking for, but sadly misses 3 out of 4 WLAN within my reach.
m4r14n0ju · 176 weeks ago
Only display the WLAN I am connected to.
m4r14n0ju · 176 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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