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

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.

0

5 Answers

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

12

The simplest syntax to redirect both is:

command &> logfile

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

command &>> logfile

9

You can do it like that 2>&1:

 command > file 2>&1

3

Use:

command >>log_file 2>>log_file

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