Shell Programming and Scripting

#! /bin/ksh
# ./delreg file

[ -z "$1" ] && echo "Need a file to delete" && exit 1 || FILE="$1"

# delreg is in the directory DIRNAME
DIRNAME=`pwd`

#  FILE will ibe either one of the following
#+ DIRNAME/FILE
#+ or /FILE
#+ //FILE will evaluate to /FILE

if [ -f "$DIRNAME/$FILE" ] ; then
echo "$FILE@@$DIRNAME/$FILE" >> /tmp/.delreg.list
#mv $FILE /tmp
exit 0
fi ;

if [ -f "/$FILE" ] ; then
echo "$FILE@@/$FILE" >> /tmp/.delreg.list
#mv "/$FILE" /tmp
exit 0
fi ;
echo "$1 is not a valid file"

[~/temp]$ ./delreg.ksh /etc/passwd
[~/temp]$ ./delreg.ksh /etc/pass
/etc/pass is not a valid file
[~/temp]$ ./delreg.ksh /etc
/etc is not a valid file
[~/temp]$ ./delreg.ksh delreg.ksh

[~/temp]$ cat /tmp/.delreg.list 
/etc/passwd@@//etc/passwd
delreg.ksh@@/home/vino/temp/delreg.ksh

./delreg.ksh delreg.ksh