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 1  ~ tldp.org
Introduction to ifThe TEST-COMMAND list is executed, and if its return status is zero, the .... msgcheck.sh #!/bin/ bash echo "This scripts checks the existence of the messages file.
 2  ~ linuxacademy.com
Conditions in bash scripting ( if statements) | Linux Academy BlogIf you use bash for scripting you will undoubtedly have to use conditions a lot, for example for an if … then construct or a while loop. The syntax ...
 3  ~ thegeekstuff.com
4 Bash If Statement Examples - The Geek Stuff4 Bash If Statement Examples ( If then fi, If then else fi, If elif else fi, Nested if ). by Sasikala ... The ability to branch makes shell scripts powerful.
 4  ~ linuxconfig.org
Bash scripting Tutorial - Linuxconfig.orgAs you will soon discover in this quick comprehensive bash scripting guide, learning the bash shell scripting is very easy task. However, if you do not find an  ...
 5  ~ codewiki.wikidot.com
If / Else Statements (Shell Scripting ) - Code WikiShell scripts use fairly standard syntax for if statements. ... bin/ bash if [ "$#" -gt 0 ] then echo "There's Beans" fi if [ "$1" = "cool" ] then echo "Cool ...
 6  +3 cyberciti.biz
If ..else..fi - Bash Shell Scripting Directory For Linux / UNIX - nixCraftif ..else..fi allows to make choice based on the success or failure of a command. For example, find out if file exists (true condition) or not (false condition) and take  ...
 7  -1 stackoverflow.com
Bash script - if , elif, else Statement Issues - Stack OverflowMore problems with the bash script I'm afraid! I can't seem to work out ... There is an space missing between elif and [ : elif[ "$seconds" -gt 0 ].
 8  ~ about.com
Bash If Statement (Conditionals) - Linux - About.comInstructions and examples for writing IF -statements in a Bash shell script .
 9  -2 panix.com
A quick guide to writing scripts using the bash shell - PanixIn a bash script , anything following a pound sign # (besides the shell name on the first ... bash gets unhappy if you leave a space on either side of the = sign.
 10  ~ bash-hackers.org
The classic test command [ Bash Hackers Wiki]bin/ bash # test if /etc/passwd exists if test -e /etc/passwd; then echo "Alright man. .... If you write a script that might not be executed by Bash , the behaviour might ...
 11  ~ linuxcommand.org
Writing shell scripts - Lesson 10: Stay Out Of TroubleTo do this, create the following script called trouble. bash . Be sure to enter it exactly as written. #!/bin/ bash number=1 if [ $number = "1" ]; then echo "Number ...
 12  +32 ubuntu-fr.org
Les scripts shell - Documentation Ubuntu - Ubuntu-frbin/ bash # indique au système que l'argument qui suit est le programme ..... bin/ sh echo -n "Entrez un nom de fichier: " read file if [ -e "$file" ]; then echo "Le ...
 13  +13 askubuntu.com
scripts - Bash - ' if ' statement: compare two strings - Ask Ubuntubin/ bash -x echo "Password:" read -t 30 S1 S2='55555' if [ $S1=$S2 ]; then ... If someone has a modifiable script that I could use or if you could ...
 14  +11 ubuntu.com
Beginners/ BashScripting - Community Help WikiBash is very flexible, and has many advanced features that you won't see in batch scripts . However if you are a 'non-computer-savvy' person ...
 15  ~ wikibooks.org
Bash Shell Scripting - Wikibooks, open books for an open world[edit]. if statements are more flexible than we saw above; we can actually specify multiple commands to run if the test-command ...
 16  -2 shellhacks.com
HowTo : Check If a File Exists | Linux BASH Scripting - ShellHacksWhile creating BASH Scripts , it is commonly helpful to check if a file exists before attempting to perform some action. This is a job for test command (the same as ...
 17  +1 stackexchange.com
Creating a Bash script that will execute a program and if it exits I'd like to know the easiest way of creating a bash script that will run an app in MacOSX (it's a UNIX based system so I assumed this was the ...
 18  -2 steve-parker.org
15) Quick Reference - Unix / Linux Bourne / Bash Shell Scripting Command, Description, Example. &, Run the previous command in the background, ls &. &&, Logical AND, if [ "$foo" -ge "0" ] && [ "$foo" -le "9"]. ||, Logical OR, if  ...
 19  +11 bencane.com
8 examples of Bash if statements to get you started - Benjamin CaneThis article shows examples of how to use BASH if statements in scripts and command line. This is a good starter tutorial for those who haven't ...
 20  +20 superuser.com
linux - Bash script gives "command not found" error on if elif My script : #!/bin/ bash echo "Enter the number 3" read t1 if [$t1 -eq 3]; then echo "it is 3" elif [$t1 > 3]; then echo "it is greater than 3" fi exit 0.
 21  +67 ubuntuusers.de
Bash -Skripting-Guide für Anfänger › Shell › Wiki › ubuntuusers.deBash -Skripte sind geeignet um Programme gemäß den eigenen ..... Sie ist auch eine elegante Alternative zu verschachtelten If -Else-Konstrukten, mit welchen ...
 22  -9 linuxtopia.org
Advanced Bash Shell Scripting Guide - Other Comparison Operatorsinteger comparison. -eq. is equal to. if [ "$a" -eq "$b" ]. -ne. is not equal to. if [ "$a" -ne "$b" ]. -gt. is greater than. if [ "$a" -gt "$b" ]. -ge. is greater than or equal to.
 23  -3 davidpashley.com
Writing Robust Bash Shell Scripts - David Pashley.comFortunately bash provides you with set -u, which will exit your script if you try to use an uninitialised variable. You can also use the slightly more readable set -o ...
 24  ~ tech-recipes.com
Bourne/ bash shell scripts : string comparison | a Tech-Recipes TutorialBrief tutorial describing how to do string comparisons. Recently updated thanks to comments from our users. Our original tutorial needed correcting for the case if  ...
 25  -8 redsymbol.net
How "Exit Traps" Can Make Your Bash Scripts Way More Robust There is a simple, useful idiom to make your bash scripts more robust - ensuring ... If some error causes the script to exit prematurely, the scratch directory and its ...
 26  -5 wooledge.org
BashGuide /Practices - Greg's WikiJust make an AWK script . If you need to retrieve data from an HTML or XML file in a reliable manner, Bash is also the wrong tool for the job.
 27  +74 digitalocean.com
How To Use a Simple Bash Script To Restart Server Programs This tutorial includes an incredibly simple bash script that checks if a certain program is running. If it is not running, the script will start it up.
 28  +5 googlecode.com
Google's Shell Style Guide - Style guidesUse set to set shell options so that calling your script as bash <script_name> does not ... If you find you need to use arrays for anything more than assignment of ...
 29  +20 tutsplus.com
The Fundamentals of Bash Scripting - Tuts+ Code TutorialI'm sure most of you can already visualize the two or three if statements to solve this. Let's work through this using the Bash scripting language.
 30  +70 usna.edu
Lab 02: Basic Bash ScriptingSetting up a bash script ; Basic bash scripting with variables and control flows ... If you want to write to standard error directly in your script , your only option is the ...
 31  +1 softpanorama.org
Arithmetic Expressions in BASH - Softpanorama[Nov 21, 2010] Advanced Bash Shell Scripting ... Works even if "n" was initialized as a ...
 32  -5 dwheeler.com
Filenames and Pathnames in Shell ( bash , dash, ash, ksh, and so on So if your script may handle unarchived files, or files created by different user or mobile app, then your script needs to handle this botched situation. Tools like ...
 33  -5 ss64.com
scripts | Bash | SS64.combin/ bash # My example bash script echo "Hello World". The first line contains a shebang ... If you will be writing a few shell scripts then it's worth creating a folder,  ...
 34  +38 allaboutlinux.eu
Bash script for beginners | allaboutlinux.euA Bash script is mainly a set of commands that can be executed in a Terminal. ... ( I don't really know if people say that, but that is the way of this ...
 35  -6 linuxsig.org
bash Scripting - LinuxSIG.orgis a convention that all shells, including bash , understand to indicate that 1) this is a shell script and 2) what kind of shell script it is. This line ensures that even if  ...
 36  +14 linuxquestions.org
Bash script to compare two files - LinuxQuestions.orgI'm trying to tell if two files are different in a script . I'm trying to use diff or md5sum to check if they are different but I can't process the.
 37  +5 serverfault.com
linux - Bash script to check if a public HTTPS site is up - Server FaultI'm trying to setup another block of code to a bash script to check if a public website on HTTPS is up or not. Can we do this using CURL?
 38  +63 freeos.com
Linux Shell Scripting Tutorial - A Beginner's handbook - FreeOS.comLinux Command(s) Related with Process; Chapter 3: Shells ( bash ) structured Language Constructs · Decision making in shell script ( i.e. if command)
 39  -1 anyexample.com
Check if program is running with bash shell script - AnyExample.comThis is an example of a bash script which checks for some running process ( daemon or service) and does specific actions (reload, sends mail) if there is no such ...
 40  +5 opensuse.org
Chapter 22. Bash and Bash Scripts - Documentation - openSUSEWhen this chapter speaks about “the shell” it means Bash . There are actually more ... If you need further information about other shells, search for shell in YaST .
 41  +18 iitk.ac.in
Advanced Bash - Scripting Guidebin/ bash # Proper header for a Bash script . # Cleanup, version 2 # Run as root, of course. # Insert code here to print error message and exit if not root.
 42  +11 sanctum.geek.nz
Testing exit values in Bash - ArabesqueIn Bash scripting (and shell scripting in general), we often want to check ... Because the if construct by design tests the exit value of commands, ...
 43  -8 earth.li
Some Bash Scripting Notes - UrchinThe best existing guide to bash scripting is the Advanced Bash - Scripting Guide, ... The standard readlink on OS X doesn't support -f; if you import coreutils via ...
 44  +4 yourownlinux.com
A Tiny Bash Script to Check Whether a Host is Alive or Not ~ Your Still, this script is for them who like making simple things more complex. ... bin/ bash target=$1 count=$( ping -c 1 $target | grep icmp* | wc -l ) if  ...
 45  -23 ibm.com
Bash by example, Part 1 - IBMBy learning how to program in the bash scripting language, your day-to-day interaction ... Even if you changed your default shell, bash is probably still running ...
 46  +28 wikipedia.org
Shell script - Wikipedia, the free encyclopediaNote: If an implementation does not have the clear command, try using the clr ... A Bash (Unix shell) script to convert JPEG images to PNG images, where the ...
 47  +14 viewsby.wordpress.com
Bash string ends with | Sany's Linux and Open Source BlogWe can check if a string ends with specific word/string. Lets try to ... Linux shell/ bash check if string is empty or notIn " bash script ". Linux bash  ...
 48  ~ ryanstutorials.netBash Scripting Tutorial - Ryan's TutorialsThis Bash scripting tutorial is divided into 8 sections. In general I recommend you work through them in order but if you've come here just to learn about a ...
 49  +52 kvz.io
Best Practices for Writing Bash Scripts | kvz.ioIf you're on cli, abbreviations make sense for efficiency. but when you're writing reusable scripts a few extra keystrokes will pay off in readability ...