Printout a list of field numbers (awk index) from a CSV file with headers as first line.

awk -F, '{gsub(/ /,"");for(f=1;f<=NF;f++) print f,$f;exit}' file.csv
-F, use , as field separator gsub() deletes all spaces for(){} loops over all input fields and print their index and value exit exit after first line
Sample Output
$ cat file.csv
foo, bar,baz

$ awk -F, '{gsub(/ /,"");for(f=1;f<=NF;f++) print f,$f;exit}' file.csv
1 foo
2 bar
3 baz

By: sesom42
2015-08-26 09:30:43

2 Alternatives + Submit Alt

What Others Think

First, please add some sample output (or just copy neomefistox's :-) It makes it much easier to quickly understand your command. . You can simplify your awk a bit. Drop the line number test. If you're going to exit after the first line, you don't need it. awk -F, '{for(f=1;f<=NF;f++) print f,$f;exit}' file.csv
flatcap · 320 weeks and 5 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: