M-[BC]M- remover

M-BCM-Remover.sh

#!/bin/bash
#############################################################################
# SCRIPT:   $0
# DESCRIPTION:
#           This script will be able to detect hidden caracter "M-[BC]M-...",
#               And/Or remove this !
# REVISIONS:
#           2014/06/11  YG
# UPDATE:
#           2016/03/29  remyd1
#____________________________________________________________________________
#
# PARAMETERS:
#  > $1  :TARGET,      (e.g. '"*.sh"' )
#  > $2  :ACTION,      (e.g. 'remove' )
#  > $2  :BACKUP,      (e.g. '' )
#
#############################################################################
usage="$0 file remove|show [backup]"
if [ "$#" -lt 2 ] || [ "$1" == "-h" ] || [ "$1" == "--help" ];then
    echo $usage
    exit 1
fi
TARGET=$1
ACTION=$2
BACKUP=$3
if [ "$TARGET" = "" ]
then
    echo 'Need to choose target file'
    echo 'M-BM-Remover [TARGET] [show/remove] [backup]'
    echo 'Example : M-BM-Remover "*.sh" remove backup'
    exit
fi
echo "ACTION = $ACTION";
echo "TARGET = $TARGET";
echo
if [ "$ACTION" = "show" ]
then
    for file in $TARGET
    do
        if [ "$file" != "M-BM-Remover.sh" ]
        then
            echo "Traitement de $file ..."
            cat -v $file | egrep M-[BC]M-
            NB=`cat -v $file | egrep M-[BC]M- | wc -l`
            echo "Occurence(s) : $NB line"
        fi
    done 
fi

if [ "$ACTION" = "remove" ] || [ "$ACTION" = "" ]
then
    for file in $TARGET
    do
        if [ "$file" != "M-BCM-Remover.sh" ]
        then
            echo "Traitement de $file ..."
            NB=`cat -v $file | egrep M-[BC]M- | wc -l`
            cat $file > $file.bak
            cat -v $file.bak | sed -r "s#M-BM-##g;s#M-CM-[\)\(\*\+]#e#g;s#M-CM-4#o#g;s#M-CM-'#c#g;s#M-CM- #a#g;s#M-CM-[\.\/]#i#g;s#M-CM-9#u#g" > $file
            echo "Occurence(s) removed on $NB line(s)"
            if [ "$BACKUP" != "backup" ]
            then
                rm -f $file.bak
            fi
        fi
        echo
    done 
fi