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Full Discussion: Create script to add user and create directory
Homework and Emergencies Homework & Coursework Questions Create script to add user and create directory Post 302506513 by m1xram on Monday 21st of March 2011 04:24:30 AM
Old 03-21-2011
groupadd useradd
Couple of thoughts. Once you find that a department doesn't exist and create the directory for, it you may wish to create a group for it with 'groupadd'. Then set the GID to the newly created group.

A similar situation should be done for the user directory although you should create the directory with 'useradd'. 'useradd -g GROUP' will make sure the directory has the correct GID. Use the '-K UMASK=026' to make sure newly created files have the correct permissions. You'll have to look up how UMASK works. In this environment you may prefer 027 for more security.

A better way to handle the departments would be to create a list of valid existing departments. It would reduce spelling errors. The last option in the list could be "(N)ew department".

Code:
#!/bin/ksh
# root check code below
#deptroot=/home
deptroot=/home/wolverines
i=0
dept=()
echo "Department:"
find $deptroot -maxdepth 1 -type d | sort | while read x ;do
    bn=$(basename "$x");
    dept[$i]="$bn"
    i=$(($i + 1))
    echo "$i) $bn"
done
echo ""
echo -n "Enter number of department or 'n' for new department: "
read ans
echo "${dept[*]}"
if [[ "$ans" =~ ^[0-9]+$ ]]; then
    echo "Numeric $ans $i"
    if [ $ans -lt $i ]; then 
       echo "In range"
       d="${dept[$(($ans - 1))]}"
       echo "Department: $d"
    fi
elif [ "$ans" == "n" ]; then
    echo "Prompt for new department"
    # assign d=DEPARTMENT
    # make sure it doesn't exist.. if exists exit
    # groupadd $d
    # mkdir "$depthome/$d"
    # chgrp $d "$depthome/$d"
else
    echo "bad input"
    exit 1
fi

Output Example:
Code:
$ ./test.sh 
Department:
1) History
2) Math
3) PhysEd
4) Science
5) Zoology

Enter number of department or 'n' for new department: 3
History Math PhysEd Science Zoology
Numeric 3 5
In range
Department: PhysEd

Sorry but I had to use KSH as BASH has a bug with pipes and while loops spawning subprocesses. BASH can't see what happened in the loop after the loop.

Lastly I'd add a check for the user ID at the beginning of your script.
Code:
if [ "$(id -u)" != "0" ]; then
    echo "This script must be run as root" 1>&2
    exit 1
fi

Only people with root access should be able to run any of this.
 

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LEARN ABOUT DEBIAN

shtool-echo

SHTOOL-ECHO.TMP(1)					      GNU Portable Shell Tool						SHTOOL-ECHO.TMP(1)

NAME

       shtool-echo - GNU shtool echo(1) extensional command

SYNOPSIS

       shtool echo [-n|--newline] [-e|--expand] string

DESCRIPTION

       shtool echo is an echo(1) style command which prints string to stdout and optionally provides special expansion constructs (terminal bold
       mode, environment details, date, etc) and newline control. The trick of this command is that it provides a portable -n option and hides the
       gory details needed to find out the environment details under option -e.

OPTIONS

       The following command line options are available.

       -n, --newline
	   By default, output is written to stdout followed by a "newline" (ASCII character 0x0a). If option -n is used, this newline character is
	   omitted.

       -e, --expand
	   If option -e is used, string can contain special "%x" constructs which are expanded before the output is written. Currently the
	   following constructs are recognized:

	   %B  switch terminal mode to bold display mode.

	   %b  switch terminal mode back to normal display mode.

	   %u  the current user name.

	   %U  the current user id (numerical).

	   %g  the current group name.

	   %G  the current group id (numerical).

	   %h  the current hostname (without any domain extension).

	   %d  the current domain name.

	   %D  the current day of the month.

	   %M  the current month (numerical).

	   %m  the current month name.

	   %Y  the current year.

EXAMPLE

	#   shell script
	shtool echo -n -e "Enter your name [%B%u%b]: "; read name
	shtool echo -e "Your Email address might be %u@%h%d"
	shtool echo -e "The current date is %D-%m-%Y"

HISTORY

       The GNU shtool echo command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Website META Language (WML)
       under the name buildinfo. It was later taken over into GNU shtool.

SEE ALSO

       shtool(1), echo(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-ECHO.TMP(1)
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