Commands tagged bell sorted by votes

Commands tagged bell (4)

sorted by

beep when a server goes offline

pings a server once per second, and beeps when the server is unreachable. Basically the opposite of: ping -a server-or-ip.com which would beep when a server IS reachable. You could also substitute beep with any command, which makes this a powerful alternative to ping -a: while true; do [ "$(ping -c1W1w1 server-or-ip.com 2>/dev/null | awk '/received/ {print $4}')" = 1 ] && date || echo 'server is down!'; sleep 1; done which would output the date and time every sec until the ping failed, in which case it would echo. Notes: Requires beep package. May need to run as root (beep uses the system speaker) Tested on Ubuntu which doesn't have beep out of the box... sudo apt-get install beep
This is sample output - yours may be different.
14

while true; do [ "$(ping -c1W1w1 server-or-ip.com | awk '/received/ {print $4}')" != 1 ] && beep; sleep 1; done

sudopeople · 2009-03-31 20:47:56 14
system beep off
This is sample output - yours may be different.
3

setterm -blength 0

bandie91 · 2010-04-29 17:52:38 18
system beep off

or change the frequency of the beep
This is sample output - yours may be different.
0

setterm -bfreq 0

mvrilo · 2009-11-16 17:34:39 4
Highlight and beep on regular expression match

Usage: command | hl 'regex'
This is sample output - yours may be different.
0

hl() { while read -r; do printf '%s\n' "$(perl -p -e 's/('"$1"')/\a\e[7m$1\e[0m/g' <<< "$REPLY")"; done; }

nyuszika7h · 2014-08-05 22:29:08 9

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

Check These Out

use vi key bindings at the command line

Display two calendar months side by side

Displays last month, current month, and next month side by side.

Show network throughput

Real gurus don't need fancy tools like iftop or jnettop.

Recursively unrar into dir containing archive

From the cwd, recursively find all rar files, extracting each rar into the directory where it was found, rather than cwd. A nice time saver if you've used wget or similar to mirror something, where each sub dir contains an rar archive. Its likely this can be tuned to work with multi-part archives where all parts use ambiguous .rar extensions but I didn't test this. Perhaps unrar would handle this gracefully anyway?

Stop Flash from tracking everything you do.

Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

Show a script or config file without comments or blank lines

Convert multiple flac files to mp3

make sure that flac and lame are installed sudo apt-get install lame flac

ignore .DS_Store forever in GIT

With a couple of little commands, you?ll be able to ignore the .DS_Store files forever from your git repositories on mac! The following command will add the .gitignore file to the git configuration git config --global core.excludesfile ~/.gitignore then, the following, will add the .DS_Store to the list echo .DS_Store >> ~/.gitignore

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Get information about memory modules

To take information about the characteristics of the installed memory modules.

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:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands tagged bell

Commands tagged bell (4) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands tagged bell (4)

sorted by