How to redirect both stdout and stderr to a file

BashStdoutIo RedirectionStderr

Bash Problem Overview

I am running a bash script that creates a log file for the execution of the command

I use the following

Command1 >> log_file
Command2 >> log_file

This only sends the standard output and not the standard error which appears on the terminal.

Bash Solutions

Solution 1 - Bash

If you want to log to the same file:

command1 >> log_file 2>&1

If you want different files:

command1 >> log_file 2>> err_file

Solution 2 - Bash

The simplest syntax to redirect both is:

command &> logfile

If you want to append to the file instead of overwrite:

command &>> logfile

Solution 3 - Bash

You can do it like that 2>&1:

 command > file 2>&1

Solution 4 - Bash

Use:

command >>log_file 2>>log_file

Solution 5 - Bash

Please use command 2>file Here 2 stands for file descriptor of stderr. You can also use 1 instead of 2 so that stdout gets redirected to the 'file'

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
Questionsdmythos_grView Question on Stackoverflow
Solution 1 - BashMatView Answer on Stackoverflow
Solution 2 - BashCosti CiudatuView Answer on Stackoverflow
Solution 3 - BashLaurent LegrandView Answer on Stackoverflow
Solution 4 - BashblankaboutView Answer on Stackoverflow
Solution 5 - BashPaulDaviesCView Answer on Stackoverflow