Please add a script to add user whose shell will be /bin/false.

Write your own scripts...we're not here to do things for you.

If you want HELP, then post what you've written and some actual, useful, details, and we'll be glad to ASSIST you in working through them.

@TBone, I agree that in English, the literal meaning of the post comes across as a bit rude but based upon the wording of some of their other posts, I think that there may be a little bit of language translation barrier. It is quite possible that s/he was trying to ask how one does this and it came across wrong.

@mosharaf_linux, when you create a user with the useradd function, use the -s option which sets the default shell. Set this to /bin/false. This will prevent the user account from being used to login. See the man documents for detailed information on the command, including all the option flags. You can get this information by typing 'man useradd'

@Noway2, I know the usage of /bin/false. This is my script for add user in linux. But Now I want to add user by this script but shell will be /bin/false. So could you help me??


#!/bin/bash
# Script to add a user to Linux system
if [ $(id -u) -eq 0 ]; then
read -p "Enter username : " username
read -s -p "Enter password : " password
egrep "^$username" /etc/passwd >/dev/null
if [ $? -eq 0 ]; then
echo "$username exists!"
exit 1
else
pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
useradd -m -p $pass $username
[ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
fi
else
echo "Only root may add a user to the system"
exit 2
fi

mosharaf_linux,

I see you discovered that you accidentally clicked on the "Report" button instead of the "Quote" button, or perhaps the "Post Reply" button. In any case, you realized your mistake & fixed it; that is good.


Everyone,
What isn't so good, is that the mods (moderators) of this board have to follow up on each of these reports & this accidental one caused us some unnecessary work. It wasn't much extra work, so no real harm done. But do please be more careful in the future.

Happy LQ-ing, & thanks for your co-operation.

On the script
1. Reversing the the sense of the if would expose the error earlier in the written flow & make it read clearer. In other words,

if !x, few lines, else, many lines, fi

is better than

if x, many lines, else, few lines, fi

because the reader is not thinking about "what if not x?" while reading what is essentially the main line of the program.

2. Before you decided to use perl w/ all its overhead & the possibility that it may not be present, did you look at any CLI commands, like mcrypt? This might make your script both faster & more transportable.

1 members found this post helpful.

Well, if you know the usage, and Noway2 gave you the parameter, why are you having a problem? Add something like this to your script:
Needs tweaking, but as Noway2 pointed out, all you've got to do is add the -s switch to useradd....as you said, you know the usage, so I'm confused as to why ask the question if you already knew the answer.

TB0ne,

How did you manage: Oh well, I'm sure you know where the "Edit" button is.

Oh well, I'm sure to know where the "Edit" button is. [/QUOTE]

Sure, pick on a poorly edited post.

Oops, that should have been:
That's funny. Now let's get back on topic.


post 4200

For RHEL/Centos, this should work
where $passwd can be cleartext