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$ true
$ echo $?
0
$ false
$ echo $?
1

That shows the exit code of "true" and "false". As you can see, they both do nothing. One returns a passing exit code, while the other returns a failing...

I prefer Debian and Ubuntu for all of my installations. I've tried various other flavors since 1999, and I always come back to the Debian family.

'true' returns nothing successfully, while false returns nothing unsuccessfully. As a result, using 'while false' would only exit your loop rather quickly, while not executing the code beneath....

You are probably out of luck. Especially without knowing the position of where GParted was. Chances are good that it had already resized the partition, and began moving data to the front of the...

AWK is your friend:

awk '/^john/,/^$/' /etc/securetty/user

No need to double post: https://www.unix.com/shell-programming-scripting/105829-concatenate-two-files-different-no-rows.html

Backticks suck. Also, there's no need for find, if they're all in the same directory.

mv *_$(date +%Y%m%d)*.xml ./xmlreprocess

I like the Debian-based distributions the best. Red Hat seems to be catering specifically to system administrators, while the Debian family seems to be targeting a more universal crowd. I prefer...

Just call it like you would in any shell script. If it's a python script, then "python script.py". If it's a BASH script, then "bash script.sh", and so forth. Anything in the %pre section of the SPEC...