I have this script which runs pretty well bar a couple of problems, I am trying to emulate the rm command and this means I can't use rm directory, I inted to alias my script to rm and then use mv to move files to a trash folder rather than delete forever.
The problem: when I use mv to move a directory into my deleted folder where this directory all ready exists I get an error, I plan to shred all the files and then I want to use rmdir to remove all the empty directories in the tree.
My script is here
Code:
#!/bin/bash
# Ai program to emulate the "rm" command in UNIX.
# Created by Michael Kelly
# Last revison 12/07/2006
# INITIALIZE VARIABLES
NO_ARGS=0
FLAG_R=""
FLAG_F_I=""
FLAG_V=""
TRASH=$HOME/deleted
# FUNCTIONS
function errors() {
if [ "$#" -eq "$NO_ARGS" ] ; then
echo "rm: too few arguments"
echo "Try \`rm --help' for more information."
exit 0
elif [[ ! -f "$1" && ! -d "$1" ]] ; then
echo "rm: cannot remove $ARG : no such file or directory"
exit 0
elif [[ -d $ARG && "$FLAG_R" = "" ]] ; then
echo "rm: \`$ARG' is a directory"
exit 0
else
checkExisting $1
fi
}
function verbose () {
if [ "$FLAG_V" = "v" ] ; then
echo "removing \`$1'"
fi
}
function interactive () {
echo -n "rm: remove $1 ?"
read A
if [[ "$A" = [Yy] ]] ; then
remove $1
else
exit 0
fi
}
function writePro () {
if ! [ -w "$1" ] ; then
echo -n "rm: remove write-protected file \`$*'?"
read A
if [[ "$A" = [Yy] ]] ; then
delete $1
fi
else
delete $1
fi
}
function checkExisting ()
{
if [ -d "$TRASH/$1" ] || [ -f "$TRASH/$1" ]; then
shred -fp $TRASH/$1 2>/dev/null
rmdir $TRASH/$1 2>dev/null
writePro $1
else
writePro $1
fi
}
function force () {
mv -f $1 $TRASH 2>/dev/null
verbose $1
}
function remove () {
mv $1 $TRASH 2>/dev/null
verbose $1
}
function delete() {
if [ "$FLAG_F_I" = "-i" ] && [ -w "$@" ] ; then
interactive $1
elif [ "$FLAG_F_I" = "-f" ] ; then
force $1
elif [ "$FLAG_R" = "-R" ] ; then
recursive $1
else
remove $1
fi
}
# Getops
while getopts :rRfvi o
do case $o in
r|R) FLAG_R=-R
;;
f) FLAG_F_I=-f
;;
v) FLAG_V=-v
;;
i) FLAG_F_I=-i
;;
*) echo "rm: invalid option -$1"
echo "try \`rm --help' for more information"
exit 0
esac
done
shift `expr $OPTIND - 1`
if ! [ -d "$HOME/deleted" ] ; then
mkdir $HOME/delete
else
for ARG in $*
do
errors $ARG
done
fi
if [ $# -eq $NO_ARGS ] ; then
errors
fi
I have highlighted the problem function in bold, I want to shred files recrusively and then use rmdir the same way for the empty directories.
Someone recommended this command:
Code:
find -type f -exec shred -u '{}' \;
which shreds recursivley but how do I specify which point to start shreding from? when I used this before it wiped out every file in my home directory onwards.
Once I have that sorted I want to use a similar command but replacing rmdir with shred, can anyone advise me away to it?
Also, I am kind of new to Unix could you explain this command a little better, someone else recommended it and I dont really understand the -exec and '{}' \
I ran it in my script and it says missing argument for -exec
do not forget <space>:
find $TRASH/$1 -type f -exec shred -u '{}'<space>\;
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