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.
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.
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
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:
if [[ -r /etc/lsb-release ]]; then lsb_release -rd; fi
[[ -r /etc/lsb-release ]] && lsb_release -rd
Either of those two will work. The first one is more flexible as you can do multiple commands within the if-statement without having to chain them with a bunch of '&&' The '-r' flag here tests to see if the file exists and is readable. If you just want to see if the file exists then you can use '-e'. There are other flags that test whether the file is writable, whether it is a block device etc etc. 'man 1 test' if you want to see the rest.