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bash redirect output of whole script with exec

Jason M Potter answered on December 28, 2022 Popularity 7/10 Helpfulness 5/10

answer bash redirect output of whole script with exec

bash redirect output of whole script with exec

Comment

# exec has two separate jobs. The first one is to replace the currently executing 
# shell (script) with a new program. The other is changing the I/O redirections 
# in the current shell. This is distinguished by having no argument to exec.

# Send stdout to a file
exec > file

# with stderr
exec > file                                                                      
exec 2>&1

# append both stdout and stderr to file
exec >> file

# One Command for both stdout and stderr
exec 2>&1 > /path/to/file/to/overwrite
exec 2>&1 >> /path/to/file/to/appended/to

Popularity 7/10 Helpfulness 5/10 Language shell

Source: stackoverflow.com

Tags: bash exec file output redirect script shell

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