101 scripts to set up linux recycle bin

As we all know, there is no recycle bin in linux. Some people are very afraid of deleting the wrong things (experienced linux administrators seldom make such mistakes). A little digression.
Then come back to the 101 scripts #15 Archiving Files As They're Removed is the script to set up an linux recycle bin

#!/bin/sh

# newrm, a replacement for the existing rm command, provides a
 # rudimentary unremove capability by creating and utilizing a new
 # directory within the user's home directory. It can handle directories
 # of content as well as individual files, and if the user specifies
 # the -f flag files are removed and NOT archived.

# Big Important Warning: You'll want a cron job or something similar to keep
 # the trash directories tamed. Otherwise nothing will ever actually
 # be deleted from the system and you'll run out of disk space!

mydir="$HOME/.deleted-files"
 realrm="/bin/rm"
 copy="/bin/cp -R"

if [ $# -eq 0 ] ; then # let 'rm' ouptut the usage error
 exec $realrm # our shell is replaced by /bin/rm
 fi

# Parse all options looking for '-f'

flags=""

while getopts "dfiPRrvW" opt
 do
 case $opt in
 f) exec $realrm "$@" ;; # exec lets us exit this script directly.
 *) flags="$flags -$opt" ;; # other flags are for 'rm', not us
 esac
 done
 shift $(($OPTIND - 1))

# Make sure that the $mydir exists

if [ ! -d $mydir ] ; then
 if [ ! -w $HOME ] ; then
 echo "$0 failed: can't create $mydir in $HOME" >&2
 exit 1
 fi
 mkdir $mydir
 chmod 700 $mydir # a little bit of privacy, please
 fi

for arg
 do
 newname="$mydir/$(date "+%S.%M.%H.%d.%m").$(basename "$arg")"
 if [ -f "$arg" ] ; then
 $copy "$arg" "$newname"
 elif [ -d "$arg" ] ; then
 $copy "$arg" "$newname"
 fi
 done

exec $realrm $flags "$@" # our shell is replaced by realrm

Let's talk about how to implement this script
Replacing the rm command with our myrm script with the recycle bin mechanism (the alias alias), the files that the script will delete are moved to a hidden folder named.deleted-files in the personal directory under home.

Then let's see how this script is implemented

while getopts "dfiPRrvW" opt
 do
 case $opt in
 f) exec $realrm "$@" ;; # exec lets us exit this script directly.
 *) flags="$flags -$opt" ;; # other flags are for 'rm', not us
 esac
 done

If the command USES the with the f option, it does not go into the recycle bin and calls the original rm command.

for arg
 do
 newname="$mydir/$(date "+%S.%M.%H.%d.%m").$(basename "$arg")"
 if [ -f "$arg" ] ; then
 $copy "$arg" "$newname"
 elif [ -d "$arg" ] ; then
 $copy "$arg" "$newname"
 fi
 done

Process the parameters in for loop order
newname="$mydir/$(date "+%S.%M.% d.% d.%m").$(basename "$arg")