Bash script, need help⠀with homework assignment - bash

Question

I have homework (Shell script) which I tried my best to make it work, but in vain.
Can anyone help?
Question:
Write a bash program named fix-permissions.sh that accepts a list of users as arguments.
If one user or more are given as arguments, the script should reset file permissions as follows:
a. Directory ~/share to 750 (if it exists).
b. All regular files inside ~/share to 744.
c. All directories inside ~/share to 750.
d. All other regular files in ~ to 600 and all other directories in ~ to 700.
e. files of other types are left as they are.
We assume that there is only one level of files and directories inside ~ (except for ~/share), and there is only one level of files and directories inside ~/share.
If no arguments are given, the script should identify normal users in the system (UID >= 500) and for each user, reset files permissions as described above.
At the end of execution, this script must generate a file named report.txt that contains a list of all files in the user's home directory including full path, owner, group and permissions for each file.
What I have now looks like this:
[...and there is nothing...back to the revision history - this is from Revision 4...]
Part 1
#!/bin/bash
#$ fx-permiss.sh user1 user2 user3
for user ; do
if -d /home/$user/share ; then
chmod 750 /home/$user/share ; else
echo “No folder named “share” is in $user home directory”
fi
find /home/$user/share -type f -exec chmod 744 {} \;
find /home/$user/share -type d -exec chmod 750 {} \;
find ~ -type f -not \( -name share -o -name ~ \) -exec chmod 600
find ~ -type d -not \( -name share -o -name ~ \) -exec chmod 700
done
Part 2
If no arguments are give, the script should identify normal users in the system (UID >= 500) and for each user, reset files permissions as described above.
for User in $(cat /etc/passwd) ; do
UserId=$(echo $User | cut -d ":" -f 3)
if ($UserId -gt 500) ; then
# reset permission
fi
done
Part 3
At end of execution, produce a file named report.txt that contains a list of all files in the user's home directory including full path, owner, group and permissions for each file.
find . -ls | awk '{print $user1 "\t" $5 "\t" $6 "\t" $user}' | tee report.txt
#it should be for all users
#where it should be saved?
chmod 755 fix-permissions
exit 0

Answer 1

code from the initial post seems to have disappeared... rolled up an example.
#!/bin/bash
function mod {
if [ -d "/Users/$1/share" ]; then
echo "permissions changes for $1"
#chmod 750 /Users/$1/share
#find /Users/$1/share -type f -exec chmod 744 {} \;
#find /Users/$1/share -type d -exec chmod 750 {} \;
#find /Users/$1/ -type f -exec chmod 600 {} \;
#find /Users/$1/ -type d -exec chmod 700 {} \;
fi
}
function clean {
IFS=':' read -ra pw <<< "$1"
local c=0
local n=""
local t=500
for i in "${pw[#]}"; do
if [ $c == 0 ]; then
n="$i"
fi
if [ $c == 2 ]; then
if [ "$i" -gt "$t" ]; then
mod $n
fi
fi
c=$[$c+1]
done
}
function report {
export user=$(whoami)
ls -la "/Users/$user" > report.txt
}
if [ -z $1 ]; then"
while read line; do
if [ "${line:0:1}" != "#" ]; then
clean $line
fi
done < /etc/passwd
else
for arg in "$#"
do
mod $arg
done
fi
report
only requirement that it doesn't meet is printing full path (only prints relative) under #3 in the report. the variable t is the lowest uid the permissions changes will affect. commented out the chmods so no one accidentally does this to their system. oops.

Answer 2

Instead of specifying $1 $2 $3, loop over the inputs like so:
for user ; do
Then, you will need to change all $1 to $user