Re: grep command question

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 --- Stephen Liu <satimis@xxxxxxxxxxxx> escribió: > Hi
all folks,
> 
> If I expect to check whether packages, AAA, BBB,
> CCC, DDD, etc. have
> been installed simultaneously what syntax shall I
> issue in following
> commands
> 
> rpm -qa | grep AAA/BBB/CCC/DDD
> 


  rpm -qa | grep -y 'aaa|bbb|ccc|ddd'

or 'egrep -i'  , grep -y = ignore case


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