Shell Script

IF

null check

if [[ $CMD = *[!\ ]* ]]; then
     ..
else
     ..
fi

awk

kill by pid

kill -9 $(ps -ef | grep -v awk | awk '/PROCESS NAME/ {print $2}')

delete via awk

find <directory path> -name <file name> | awk '{print "\""$0"\""}' | xargs rm