Display array status in prompt

If you’re using md RAID and want your array status displayed in your prompt, create a file in /etc/profile.d/
called raid_status.sh with the following function definition:
raid_prompt() { awk '/^md/ {printf "%s: ", $1}; /blocks/ {print $NF}' /proc/mdstat | awk '/\[U+\]/ {print "\033[32m" $0 "\033[0m"}; /\[.*_.*\]/ {print "\033[31m" $0 "\033[0m"}'; }

Then add $(raid_prompt) to your PS1 environment variable to include the array name and member status in green if all members are up, or red if any member has failed:
export PS1='$(raid_prompt)\n[\u@\h \W]\$ '

(Remember to use single quotes, or the value will remain static, instead of getting updated every time the prompt is displayed.)


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