CODEWITHSUNDEEP
linuxshellcommand-line
starkk92
starkk92

Reputation: 5924

How to use sort and copy commands with pipes concept?

I have been using this command to make a file "results" with the output of the command "ls" in the sorted manner.

ls | sort | < results

But,I have find out that the file "results" is empty even though the "ls" command shows many files and folders.

Can some please explain the fault in using this command to get the desired result.

Upvotes: 0

Views: 143

Answers (4)

cjav
cjav

Reputation: 31

You got the redirection wrong, as per the other answers you need:

ls | sort > results

And, might I ask, why are you using sort? ls already sorts by name. If you just want the results in one column you can use:

ls -1 > results

You can also sort by timestamp among other options see man ls:

ls -1t

Or reverse sort any results:

ls -1tr

Upvotes: 1

user2656151
user2656151

Reputation:

I think you want to do:

ls | sort > results

Am I correct?

Upvotes: 2

mohit
mohit

Reputation: 6064

Use this:

ls | sort > results

< is for input redirection, whereas you want the output to be redirected, ie, use >. For more info on I/O redirection, read this.

Upvotes: 1

eduffy
eduffy

Reputation: 40232

Your redirection is in the wrong direction, use > instead of <. Also, you don't need the pipe after sort. try this:

 ls | sort > results

Upvotes: 2

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