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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.
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,…):
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Take advantage of sudo keeping you authenticated for ~15 minutes.
The command is a little longer, but it does not require X (it can run on a headless server).
Linux : these script enable you to edit multiple files and remove exact phrase from multiple files
Although rm is protected against it, there are many commands that would wreak havoc on entering the obvious ".*" to address "dot-files". This sweet little expression excludes the dirs "." and ".." that cause the problems.
grep -sq "" filename && command
grep can be used in combination with && to run a command if a file exists.
* ps -ef # list running processes
* grep string
* pull the process names from 8th field
* cut and delimiter '/'
* print 4th field
* get rid of trailing grep
* for loop killall -9 $i which is the process name
Its very useful when you do not have control over name servers and need to check DNS configuration directly, right after change. You will not need to wait for DNS propagation to verify if all records were configured properly by vendors of name servers.
It suspends to RAM: you always need your batteries for the RAM but it saves time as there is no need to slowly archive everything on your hard disk.
It works fine with me but if anyone has a nicer way, please contribute.
Make a signature.
Encrypt for user id name.
to unload Daemon, use: launchctl unload /Library/LaunchDaemons/.plist
eliminates "l" and "o" characters change length by changing 'x' here: cut -c 1-x
Values will depend on the driver and the hardware specifics, so you need to refer to your driver documentation for proper interpretation of those values.