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runs a bash script in debugging mode

Terminal - runs a bash script in debugging mode
bash -x ./post_to_commandlinefu.sh
2009-02-25 19:10:21
User: nottings
Functions: bash
24
runs a bash script in debugging mode

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
bash -x script.sh 2> log
bash -x SCRIPT
2009-03-13 00:09:07
User: jcalvert
Functions: bash
3

Display commands and their arguments as they are executed. Useful for debugging shell scripts.

bash -x test.sh 2>&1 | tee out.test
2009-09-03 17:10:44
User: arcege
Functions: bash tee
3

Sends both stdout and stderr to the pipe which captures the data in the file 'out.test' and sends to stdout of tee (likely /dev/tty unless redirected). Works on Bourne, Korn and Bash shells.

Know a better way?

If you can do better, submit your command here.

What others think

just running set -x first accomplishes the same thing

or, add set -x within your script at the point you want to turn debugging on

Comment by nottings 335 weeks and 4 days ago

Also debugging can be turned on at the top of the script when declaring the shell type: #!/bin/bash -x

Comment by hellspawn 335 weeks and 4 days ago

thanks hellspawn! didn't know that, but it makes sense.

Comment by nottings 335 weeks and 3 days ago

Thanks chaps. Made a lot of people at my place very happy.

Comment by mccalni 333 weeks and 3 days ago

How is it debugging? Does is it just more verbose?

It would be cool if there was a "safe-mode" where it blocks all writes to devices.

Comment by matthewbauer 304 weeks and 4 days ago

see

http://www.davidpashley.com/articles/writing-robust-shell-scripts.html

for tips for safer, more robust coding

Comment by nottings 245 weeks and 4 days ago

Inside script "set -x" turns on debugging. "set +x" turns off debugging. Bash example:

set -x; ls; ps; set +x
Comment by 0xFF 118 weeks and 1 day ago

Your point of view

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