Got stuck so plz help

Shell Programming and Scripting
1

I'm having problem writing a shell script using bash that takes a file as an argument. The script should be able to determine what permissions the owner, group and everybody has for the file passed in.

could anyone plz help me out.

2

ls -l "$1" | awk '{print $1}' | sed 's/^.//'

or if you need it with description:

script.ksh

ls -l $1  | awk '{print $1}' | sed 's/^.//' | sed 's/\(^...\)/owner:\1 group:/;s/\(...$\)/ others:\1/'

#script.ksh /tmp/test
owner:rw- group:r-- others:r--

dirty but it's working :slight_smile:

3 
#!/bin/sh

if [ $# -ne 1 ]; then
        echo "Usage: $0 yourfilename"
 exit 127
fi

ls -al $1 | cut -d" " -f1
4 
set -- `ls -l "$1"`
perms=${1#?}
uperm=${perms%??????}
temp=${perms#???}
gperm=${temp%???}
operm=${temp#???}

That will work in any POSIX shell (including bash). It can be written more succinctly in bash (this also works in ksh93):

set -- `ls -l "$1"`
uperm=${1:1:3}
gperm=${1:4:3}
operm=${1:7:3}