Sort all the ".dat" files in current directory by column 3 (change it accordingly), and replace the sorted one with original.

for x in *.dat;do sort -k 3 $x >tmp && mv -f tmp $x;done
We normally get tasks in which one has to sort a data file according to some column. For a single file say foo, we would use sort -k 3 foo >tmp && tmp foo The for loop is useful when we have to do it on a number of files.

By: rajarshi
2010-07-07 07:57:37

What Others Think

You can use "-o" option of "sort" command to replace file directly, without using a temporary file. For a single file is: sort -k 3 -o foo foo
lucafaus · 602 weeks and 3 days ago
thanks :-)
rajarshi · 602 weeks and 2 days 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? 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.


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: