Help needed - Script


 
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Homework and Emergencies Homework & Coursework Questions Help needed - Script
# 1  
Old 04-25-2019
Help needed - Script

Hi guys,

Hoping someone can help me with the below.

- Write a script called 'home.sh' which takes a username as its argument and
will print out the home directory of that user as follows:

Code:
$ ./home.sh root
root's home directory is /root
$ ./home.sh nobody
nobody's home directory is /

If the command is used incorrectly, print a usage error to stderr:


Practice questions - University Of Technology Sydney

Last edited by edujs7; 04-26-2019 at 05:34 AM.. Reason: Creating different threads for other questions
# 2  
Old 04-25-2019
Hello edujs7,

IMHO you should open 1 thread for each question, else people who are seeing this thread in future could be confused. So I am answering very first question of yours. Could you please try following.
Code:
cat script.ksh
user_name="$1"
awk -v user="$user_name" -F':' '$1==user{print "Home directory for user " user " is: "$(NF-1)}'  /etc/passwd

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
# 3  
Old 04-25-2019
Many thanks for your help RavinderSingh13 and as per your suggestion I did edit the post and will create other threads for the other questions.
This User Gave Thanks to edujs7 For This Post:
# 4  
Old 04-25-2019
If you forgo the required error message, this could work for you:
Code:
echo "$1's home directory is $(grep $1 /etc/passwd | cut -d: -f6)"

To produce the error checking and message, a serious detour must be taken, and we need to know what your OS and shell versions are.

Last edited by RudiC; 04-25-2019 at 09:53 AM..
This User Gave Thanks to RudiC For This Post:
# 5  
Old 04-25-2019
Code:
getent passwd "$1" | cut -d: -f6

# 6  
Old 04-25-2019
Quote:
Originally Posted by nezabudka
Code:
getent passwd "$1" | cut -d: -f6

Be aware that not everyone has some of the more esoteric utilities:
Code:
Last login: Thu Apr 25 14:55:41 on ttys000
AMIGA:amiga~> getent
-bash: getent: command not found
AMIGA:amiga~> _

This User Gave Thanks to wisecracker For This Post:
# 7  
Old 04-25-2019
Then another option to run as root
Code:
runuser -l "$1" -c 'echo $HOME'

but will give an error if the user does not exist

--- Post updated at 17:19 ---

Purely for educational purposes. Maybe even so?
Code:
su -c 'echo $HOME' "$1"

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