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LFS201 LAB 37.3
Brucecurcio
Posts: 5
Can someone tell me what the "set -x" syntax at the beginning of the script on item 6 in this lab means?
#!/bin/bash
set -x
rsync --progress -zvrxH -e "ssh -c blowfish" --delete $*
I looked under the set man page, which explains that it identifies a key sequence that executes a shell command. I'm not really sure what this means or how it is used here.
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Comments
to the console *before* they are executed, essentially it means verbose.
You turn off this debug mode with set +x. This is all buried somewhere in the man
page for bash, not set. It is also discussed in the "debugging" section of the
bash chapter I'm pretty sure, but I don't have the class in front of me.
so you often do:
set -x
... some commands
set +x
when you want to get more detailed output, often but not exclusively, while debugging
a script.