bash-based Unix Shell Script: Difference between revisions
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** It cam make use of a [[Unix Utility]]. | ** It cam make use of a [[Unix Utility]]. | ||
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Latest revision as of 03:30, 24 September 2021
A bash-based Unix Shell Script is a Unix Shell Script based on the bash Shell Program.
- Context:
- It cam make use of a Unix Utility.
- See: perl-based Script.
References
Examples
- Redirecting stderr to stdout (and stdout to stderr)
$ (time sleep 1) 2>&1 | grep real $ (time sleep 1) 3>&1 1>&2 2>&3 | grep real
- Looping
$ loop="true" ;
$ while [ "$loop" == "true" ]; do sleep 2; \
up=`uptime | awk '{print $8}'|sed "s/,//"| sed "s/\.//" | bc`; \
echo "$up "; if [ $up -le 7]; then loop="false"; fi; done