[Wien] analysing the convergence with the command "grep"

[mouhamed mahdi]

Dear Prof. Perer Blaha,

thank you for your replay;

I want to analyze my caculation so I find this command:

$ grep -e :dir -e GREED -e :FRMS -e :ENE -e :CHARG -e PRAT -e :DIS -e
"MIXING SC" -e PLANE *.scf* |tail -40

PLEASE can you explain this command

thanks
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