I am running a bash script that creates a log file for the execution of the command I use the following Command1 gt gt log file Command2 gt gt log file This only sends the standard output and not the standard error which appears on the terminal Can I log both the stderr and stdout logged to a file

The simplest syntax to redirect both is command amp gt logfile If you want to append to the file instead of overwrite command amp gt gt logfile

Use command gt gt log file 2 gt gt log file

You can do it like that 2 amp 1 command gt file 2 gt amp 1

If you want to log to the same file command1 gt gt log file 2 gt amp 1 If you want different files command1 gt gt log file 2 gt gt err file

[bash] How to redirect both stdout and stderr to a file

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.

Can I log both the stderr and stdout logged to a file?

This question is related to bash stdout io-redirection stderr

The answer is

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'

The simplest syntax to redirect both is:

command &> logfile

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

command &>> logfile

Use:

command >>log_file 2>>log_file

You can do it like that 2>&1:

 command > file 2>&1

Source: Stackoverflow.com

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