Print command line output into a text file in Linux (Ubuntu)

Question

I have a C++ program in Linux (Ubuntu) which prints very long output in a command terminal.

How can i copy this output from command terminal directly to the .txt file by Linux command?

Kerrek SB · Accepted Answer · 2013-10-01 22:15:48Z

5

Your shell does this for you by virtue of output redirection:

$ ./a.out > theoutput.txt

answered Oct 1, 2013 at 22:15

Kerrek SB

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2 Comments

There is an error when i execute this command: bash: ./a.out: No such file or directory

@BlueBit: substitute the actual filename of own program... (or just call all your programs a.out, as you were meant to :-))

Mike Makuch · Accepted Answer · 2013-10-01 22:15:23Z

2

In general you type;

command > file.txt

The greater than symbol > redirects standard out to the file.

answered Oct 1, 2013 at 22:15

Mike Makuch

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Exactly. You "pipe" the output to a file.

Well actually pipe would be used to send stdout to stdin of another process i.e. "command | command2". Not the same thing.

An improvement would be to keep stdout and stderr separately: command 1>outFile 2>errFile.