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Full Discussion: Help need with remove command
Top Forums Shell Programming and Scripting Help need with remove command Post 302781469 by Don Cragun on Saturday 16th of March 2013 03:28:39 PM
Old 03-16-2013
Quote:
Originally Posted by pinnacle
Thank you sir!!

---------- Post updated at 12:58 PM ---------- Previous update was at 12:27 PM ----------



I am planning to use the below code for removing files. I want to echo after all files are deleted. The order in which I delete files or all at onces does not matter.

Please let me know if there is a better way to do this.

Also I would like a safe approach in case the parameter values are blank then it should not wipe out the root directory.


Code:
 
    if `rm ${INPUTDIR:?'$INPUTDIR is not correctly set'}/${PATTERNA:?'$PATTERNA is not correctly set'}*`; then
        if `rm ${INPUTDIR:?'$INPUTDIR is not correctly set'}/${PATTERNB:?'$PATTERNB is not correctly set'}*`; then
            if `rm ${TEMPDIR:?'$TEMPDIR is not correctly set'}/${PATTERNB:?'$PATTERNB is not correctly set'}*`; then
                if `rm ${CONTROLDIR:?'$CONTROLDIR is not correctly set'}/${PATTERNB:?'$PATTERNB is not correctly set'}*.cmd`; then
                    echoen "All Files Deleted Successfully!!"
                fi
            fi
        fi
    fi

This is overkill. You only need to use ${x:?'error msg'} once for each different $x (the first time it is referenced). And, you won't be able to list the filenames after they have been removed. And, I've never seen an echoen command.

You could try something like the following to list the files to be removed and then remove them. Don't try this if any of your filenames could contain whitespace characters! If there is a chance that any filename you're trying to remove will contain one or more whitespace characters, you need to use more complicated code.
Code:
    echo 'Preparing to remove the following files:'
    ec=1
    printf "\t%s\n" ${INPUTDIR:?'$INPUTDIR is not correctly set'}/${PATTERNA:?'$PATTERNA is not correctly set'}*
    if $(rm $INPUTDIR/$PATTERNA*); then
        printf "\t%s\n" $INPUTDIR/${PATTERNB:?'$PATTERNB is not correctly set'}*
        if $(rm $INPUTDIR/$PATTERNB*); then
            printf "\t%s\n" ${TEMPDIR:?'$TEMPDIR is not correctly set'}/$PATTERNB*
            if $(rm $TEMPDIR/$PATTERNB*); then
                printf "\t%s\n" ${CONTROLDIR:?'$CONTROLDIR is not correctly set'}/$PATTERNB*.cmd
                if $(rm $CONTROLDIR/$PATTERNB*.cmd); then
                    echo 'All Files Deleted Successfully!!'
                    ec=0
                fi
            fi
        fi
    fi
    if [ $ec -ne 0 ]; then
        echo 'Some Files Were Not Deleted!!'
    fi

Note, this code has not been tested. I strongly suggest changing the rms in this script to echos until you verify that it will do what you're trying to do.
This User Gave Thanks to Don Cragun For This Post:
pinnacle
 

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