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What is the command for " how many shell is running in your
system or how many shell supported by your system " ?.
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Answer Posted / joker
> ps -a |grep -E 'sh$' |wc -l
-a is for to list process of all users
-E extended grep to filter the shells (since they end with sh like bash, tcsh, ksh, sh
-$ to match only at the end of the line where the process is printed
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