User script

**Bad HAL 9000** · 09-01-2003

Hi, I am a bit of a newbie to linux and can do some things. I have managed to get everything up and running correctly.

But I dont know how to do any shell scripting. And I want to write one that will do the following.

[root@localhost /]# ./webuser <username> <password> <quota>

Would create a user on the system. With a disk quota based on MB specified in the command line, and add a folder called 'www' with in the user's home dir. Oh yea and it would also create a mySQL user and a db called bn_USERNAME.
Can anyone take some time to help me do this? Maybe teach me some basics about how this would be done.

**bpark** · 09-01-2003

Well, I don't have MySQL so I can't help you out in those parts but I'll get you started.

Code:

#!/bin/sh

# The first line above MUST be exactly as you see it. executes a subshell and runs the following commands

# In scripting &#40;Bourne&#41;, $1 - $9 represent the command line arguments
# $0 is the name of the script. You can also make variables using '$'
echo "First field&#58; $1"
echo "Second field&#58; $2"
echo "Third field&#58; $3"

Save this file as "webuser" and set the executable permissions for it (chmod +a webuser or chmod 755 webuser). Once that's done, try running it like the way you have it.

Code:

$ ./webuser brock mypasswd 1500

It should print out the values you gave in. So this the most basic thing I can teach you. You'll now have to use builtin commands (i.e: useradd) to help you along the way but it shouldn't be hard at all. Let me know if you run into trouble.

**Bad HAL 9000** · 09-01-2003

Excelent! I got it to add a user I dont know how to set a quota tho... Any ideas there?

**bpark** · 09-01-2003

Setting quota is a lot more work than you think. First, you need the option enabled in the kernel to do so. As most distributions have this enabled, I don' t think you'll need to worry about this part. Then you'll need to turn quota on with /usr/sbin/quotaon. From here, you'll have to manage userquota, groupquota and the quota database. I'd suggest www.google.com to try to find a nice tutorial on this since I think they'll be able to explain it better.

**Bad HAL 9000** · 09-01-2003

LOL ok ill look around. Thanks

**Dolda2000** · 09-01-2003

Here's the documentation that comes with the source distribution of the quota userspace tools (in PostScript format):
http://www.dolda2000.com/~fredrik/lf/quotas.ps

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