(New to shell scripting)

Now let's implement a different script called change_permission.sh. By running change_permission.sh all files with extension .txt in a specified directory (which you will define in the script) should have read-only permission for all users. In addition, the string "***READ ONLY***" will be appended (use >>) to each .txt file as its last line.

lets assume the directory exist(lines(folder- with some text files) and i want to change the the extension txt to read only for all user and do as it does above.

here is my change_permission.sh:

dirname=230-lab-bash-scripts

extension=.txt

$dirname

counter=0

sourcefile=aladdin.txt

for i in extension; do

chmod ug = r change_permission.sh (i tried looking up the man for chmod and i dont know if i am using it right)

filename="$dirname""/""$(printf %03d $counter)""$extension">>"$ug"

echo "$line" > $filename

((++counter))

done

as for split.sh:

#!/bin/bash

# The first line of the script indicates what program is to be used to interpret

# the script. In this case, /bin/bash.

# Everything that appears after a "#" symbol is ignored by bash.

# To create a variable, put a line in the script that contains the name of the

# variable followed immediately by an equal sign ("="). NO SPACES are allowed.

# After the equal sign, assign the information to store.

# The only characters allowed in variable names are [A-Za-z0-9_] (alphanumeric

# characters and underscore).

dirname=lines

extension=.txt

rm -rf $dirname

# Whenever the shell sees a word that begins with a "$", it tries to find out

# what was assigned to the variable and substitutes it.

mkdir $dirname

sourcefile=aladdin.txt

counter=0

# Check the man page of read for its usage

while IFS= read -r line; do

filename="$dirname""/""$(printf %03d $counter)""$extension" # concatenate strings

echo "$line" > $filename

((++counter))

done

230-LAB-BASH-SCRIPTS [SSH:... [ D 0 0 > lines aladdin.txt change_permission.sh README.md split.sh 230-LAB-BASH-SCRIPTS [SSH:... [ D 0 0 > lines aladdin.txt change_permission.sh README.md split.sh