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i have a large log file A.log, i want to grep ONE CERTAIN STRING from the last 10 lines and compare to a variable (FTP_SUCCESS_MSG), how can i do that?

something like:

logs='/tmp/A.log'
FTP_SUCCESS_MSG="226 Transfer complete"
if [tail -10 $logs == $FTP_SUCCESS_MSG] ; 
then 
    echo "Success"  
else
    echo "Failed"
    exit 1
fi
hades
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1 Answers1

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if tail -10 "$logs" | grep -Fq "$FTP_SUCCESS_MSG" ;  then ...

Notice how [ is not present in the condition (and if it were, it would require non-optional spaces on both sides).

Notice also how variable interpolations are in double quotes unless you require the shell to tokenize the value and perform wildcard expansion on the tokens.

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tripleee
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