UNIX for Dummies Questions & Answers

for an assignment i'm working on i have 2 minor issues with my code for the lines to be displayed after entering a line of code i.e:-

$ ls- l foo1.c
foo1.c not found

$ recycle
-rw-r--r-- 1 usr user 31 foo1.c
-rw-r--r-- 1 usr user 31 foo2.c

this is my working code .


******************************************
#!/bin/sh

if [ $# -eq 0 ]
then
echo "No recycling exist "
else


case "$1" in
-a)

if [ $# -gt 1 ] && [ -d recyclebin ]
then
echo "directory exist"
mv /home/assignment2/$2 /home/assignment2/recyclebin
else

echo ".recyclebin does not exist "
echo "Creating the .recyclebin directory and adding the file now."
mkdir /home/assignment2/recyclebin
mv /home/assignment2/$2 /home/assignment2/recyclebin
fi
;;

-e)
rm -rf /home/assignment2/recyclebin
echo "The recyclebin is empty "
;;


-h)
echo "-a adds a file for recycling. If this -a option is used and"
echo " no .recyclebin directory, recycle notifies the user, and"
echo " creates the directory and moves the file to .recyclebin"
echo " "
echo "-e removes all files from .recyclebin and prints a message saying"
echo " that the recycle bin is empty."
;;
esac
fi
**************************************************

i'm thinking that for this option "$ recycle ", i would need to check that the number of paramaters is equal to zero ( if [ $# -eq 0 ] ) and also the number of elements in the recyclebin folder is greater than 0. could you explain to me how i could go about doing that part.



also ls -l would list the files in the specific directory and their permissions.
how do i show that the file was not found i.e:
$ ls- l foo1.c
foo1.c not found

"how do i show that the file was not found"



Since this could be a homework assignment, I don't want to give you the answer, but try reading about some options to the grep or ls commands

man grep

man ls