Displaying wireless signal on screen in realtime.

watch -n 1 "awk 'NR==3 {print \"Signal strength = \" \$3 \"00 %\"}''' /proc/net/wireless"

By: jlaunay
2012-06-07 11:00:56

1 Alternatives + Submit Alt

What Others Think

{ s/strenght/strength/ } Alternatively, using a couple of functions for an animated, coloured graph: makeline(){ printf "%${1:-$COLUMNS}s\n" ""|tr " " ${2:-#}; } wlansig() { echo "" ; PRINT_FORMAT="\e[0;33m%s%s\e[0m%s\e[0;32m%s\e[0m%s%s\r" ; while true ; do sig=$(awk 'NR==3 {print $3}' /proc/net/wireless) ; printf $PRINT_FORMAT "signal = " ${sig/./} " : |" $(makeline ${sig/./} ${2:-=}) $(makeline $(expr 99 - ${sig/./} - 15) -) "|" ; sleep ${1:-"1s"} ; done ; } usage: wlansig [timing] [graphing character] - timing (default '1s') must be in format for /bin/sleep - graphing character (default '=') might need to be quoted (e.g. "&") May bork entirely if signal vanishes and crashes the pipeline. YMMV.
Quantum · 485 weeks and 4 days ago
I like wavemon
hfs · 485 weeks and 1 day 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?

You must be signed in to comment.

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: