Permission denied on cat via shell script

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How to set a variable to the output of a command in Bash? 13 answers

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To assign the output of a command to a variable, wrap the command in backticks or $() .

RESULT=$(cat $LOGFILE | tail -1)

Your command performed the environment variable assignment RESULT=cat , and then executed the command $LOGFILE | tail -1 $LOGFILE | tail -1 in that environment. Since $LOGFILE is not an executable file, you got an error.

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