Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Linux Shell Scripting Bootcamp

You're reading from   Linux Shell Scripting Bootcamp The fastest way to learn Linux shell scripting

Arrow left icon
Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787281103
Length 208 pages
Edition 1st Edition
Tools
Arrow right icon
Author (1):
Arrow left icon
James K Lewis James K Lewis
Author Profile Icon James K Lewis
James K Lewis
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with Shell Scripting FREE CHAPTER 2. Working with Variables 3. Using Loops and the sleep Command 4. Creating and Calling Subroutines 5. Creating Interactive Scripts 6. Automating Tasks with Scripts 7. Working with Files 8. Working with wget and curl 9. Debugging Scripts 10. Scripting Best Practices Index

Creating new commands from a template

Since you are reading this book it can be assumed that you are going to be writing a good number of scripts. Here is another handy trick I learned over the years. When I need to create a new script, instead of doing it from scratch I use this simple command:

Chapter 10 – Script 2

#!/bin/sh
#
# 1/26/2014
#
# create a command script

if [ $# -eq 0 ] ; then
 echo "Usage: mkcmd command"
 echo " Copies mkcmd.template to command and edits it with kw"
 exit 255
fi

if [ -f $1 ] ; then
  echo File already exists!
  exit 2
fi

cp $BIN/mkcmd.template $1
kw $1
exit 0


And here is the contents of the $BIN/mkcmd.template file:
#!/bin/sh
#
# Date
#
if [ $# -eq 0 ] ; then
 echo "Usage:                "
 echo "                      "
 exit 255
fi

Be sure that after you create the mkcmd.template file that you run chmod 755 on it. That way you do not have to remember to do it every time on your new commands. In fact, that...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime