≡ Menu

Bash Script Flags

Can you explain me common UNIX / Linux / Mac OS X / BSD bash shell script flags?

You can pass -v and -x option to #!/bin/sh or #!/bin/bash:

Flags

  1. The -v option displays each command before executing it. This is the equivalent of inserting set -v in the script.
  2. The -x option displays the result each command. This is the equivalent of inserting set -x in the script.

Above flags are useful for debugging shell problems:

#!/bin/sh -x
FILE="/etc/resolv.conf"
echo "This is a test"
[ ! -f $FILE ] || echo "File $FILE does not exist"

You can run them from command prompt itself:

sh -x /path/to/script
bash -xv /path/to/script
sh -nv /path/to/script
Share this tutorial on:
{ 0 comments… add one }

Leave a Comment


   Tagged with: , , , , , , , , ,