Add file content to a variable (bash)?

LinuxSeeker · 12-18-2005, 06:39 AM

I am trying to create a simple shell script that will print the following message on the screen: "Your kernel is: (kernel version)".

My script is:

Code:

#!/bin/bash
yks="Your kernel is: "
kernel=cat /home/usertest/file1
#this is the text file in which I have saved my kernel version
echo $yks $kernel

But it seems that I cannot assign the cat command to a variable. Any suggestions?

cs-cam · 12-18-2005, 06:40 AM

Code:

kernel=`cat /home/usertest/file1`

Backticks are your answer

zeos · 12-18-2005, 08:36 AM

Yup ...you could also shorten this to

Code:

#!/bin/bash
kernel=`uname -r`
echo "Your kernel is" $kernel

denver1980 · 12-19-2005, 05:20 AM

Want to do a one-liner ?

Code:

echo "Your kernel is `uname -r`"

Want to execute it anytime-anywhere ?
Add an alias in you ~/.profile

Code:

alias Ver="echo \"Your kernel is `uname -r`\"

Invoke it by typing :

Code:

# Ver

LinuxSeeker · 12-19-2005, 01:41 PM

Thank you all. What I mainly wanted was to know how to use 'cat' in a variable but your answers were even better