Comments on: Shell Script to get user input

By: The Linux Blog » 2010 Statistics

The Linux Blog » 2010 Statistics — Wed, 05 Jan 2011 10:32:00 +0000

[...] Posts of 2010 1) Shell Script To Get User Input 2) iPhone SSH Client 3) Using Cut Shellscript String Manipulation 4) rsync to smb share 5) [...]

By: CaliDude

CaliDude — Tue, 14 Dec 2010 14:32:50 +0000

Thanks!!!! I this script but the part im missing is how to get the variables correctly so that when ready I can just input the name and the last octet of the ip address

#!/bin/bash

# Get next available IP (loop through subnet and find first IP that doesn’t respond to ping)
IP=$(for i in `seq 1 254`; do if (! ping -q -c 1 192.168.0.{i} 1>/dev/null 2>&1); then echo ${i}; break; fi; done)

# Delete current IP address from config file
sed ‘/IPADDR/d’ /etc/sysconfig/network-scripts/ifcfg-bond0 > /etc/sysconfig/network-scripts/ifcfg-bond0.new

# Add configuration option for new IP address
echo “IPADDR=192.168.1.${IP}” >> /etc/sysconfig/network-scripts/ifcfg-bond0.new

# Replace network interface configuration
mv /etc/sysconfig/network-scripts/ifcfg-bond0.new /etc/sysconfig/network-scripts/ifcfg-bond0

# Same with hostname
sed ‘/HOSTNAME/d’ /etc/sysconfig/network > /etc/sysconfig/network.new
echo “HOSTNAME=newhostname” >> /etc/sysconfig/network.new
mv /etc/sysconfig/network /etc/sysconfig/network

echo “Reboot for changes to take effect…”

im kinda new to the bash scripting world so im kinda in the mud with this and your help would again be awesome!!

But I think my script is a little off my counterpart got this working in windows but he cant help with stuff Linux stuff

this is what he made

[int]$a = read-host -Prompt “input CDS number”

if($a -lt 240 -and $a -gt 0){
# baspscfg -name 247Team -type 2
if($a -lt 10){
$hostname = “de-cds-win-0$a”
}
else{
$hostname = “de-cds-win-$a”
}
$ip = “10.8.40.$($a + 10)”
Write-Host “ip-adress $ip”
# netsh interface ip set address name=”247Team” static $ip 10.8.40.1 255.255.255.0. 1
# netsh interface dns set address name=”247Team” static 10.1.14.35
$computerinfo = Get-WmiObject -class win32_computersystem
#$computerinfo.Rename($hostname)
Write-Host “changed from $computerinfo to $NewComputerName”

}
else{
write-host “if the server number is over 240 you will have to enter them your self enjoy”
}

By: TheLinuxBlog.com

TheLinuxBlog.com — Tue, 14 Dec 2010 14:24:45 +0000

Hey, I’ll see what I can come up with. The first thing would be to use hostname to set the hostname, eg. sudo hostname test-system-11; next would be to use ifconfig to set the ipaddress, gateway etc. You can use the input from this post to get the parameters, if the last field of the hostname would be numbers you can use cut to extract that. Something like: echo $HOST_NAME | rev | cut -d – -f 1 would probably work

By: CaliDude

CaliDude — Tue, 14 Dec 2010 14:15:47 +0000

Hi I am looking for a script that can 1.That creates the name of a new host “test-system-x”2. select a IP range from 1-250, 3. But also when I input the host name like 1 or 2 it will also give the ip started from 10 so it would look like this

test-system-11
1.192.168.0.11
test-system-12
2.192.168.0.12

please help anything to get me started would be AWESOME!!!!

By: TheLinuxBlog.com

TheLinuxBlog.com — Sat, 20 Nov 2010 18:01:04 +0000

Hey kksoni I think you're talking about input validation. There are a few ways to do it. One is to use if statements, another is by using grep and regular expressions. Check out this page for a few examples.

By: kksoni

kksoni — Sat, 20 Nov 2010 15:16:12 +0000

how to validate that my format of user parameteres in this format

LIKE :

AUS 100 USA

mean checked this type or format is given on input is right or not

By: TheLinuxBlog.com

TheLinuxBlog.com — Fri, 10 Sep 2010 12:43:32 +0000

Sure, check out this graphical shell scripting article and do something like this: Xdialog --inputbox "Enter your text here" 8 30

By: pratik

pratik — Thu, 09 Sep 2010 11:15:41 +0000

Hi i want to know how to take in input from the user in a pop up?? is there any option for the same??

By: MBN

MBN — Mon, 13 Oct 2008 12:56:47 +0000

Oh and this is the not out put which for a newbie don’t look to good :(

: command not found
Please enter a users name and press [ENTER] :
: command not found
taskb.sh line 31: syntax error near unexpected token `fi’
taskb.sh line 31: `fi’

By: MBN

MBN — Mon, 13 Oct 2008 12:50:52 +0000

Still a little bit lost :(

This is what i’m trying to do and my code that’s all $%^ up

I’m trying to get a user to enter another users name which in turn checks to see if that users home folder exists.

#!/bin/bash


cd /home
echo "Please enter a users name and press [Enter]";
while read username
do
blank="$username"
echo $blank;
if [ -z "${blank}" ]; then
echo "That was empty, Please try again"
else
echo "Checking now . . . . "
fi
done
if [ -d $username ]; then
echo "That user exists"
else
echo "No such user"  # am I able to loop this back up to the top for user to enter user name?

fi

Sorry about the shocking coding i’m still trying to learn