Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: multiple conditions in if statements
Top Forums Shell Programming and Scripting multiple conditions in if statements Post 20513 by Jimbo on Sunday 28th of April 2002 09:42:39 AM
Old 04-28-2002
On assignments to a variable, do x= instead of $x= .

When you use a mixture of -o and -a, you might have to control precedence. In the following, the first line would test true because -o has precedence:
if [ a = a -o b = b -a c = C ]
But add parentheses (you would need to backslash these) and it would now test false:
if [ ( a = a -o b = b ) -a c = C ]

Also, when checking for several values, a case statement makes for nice clean code, and even more handy when each value will result in a different action:
Code:
case $x in
 +|-|/|%) x=$vr1;;
       *) print "You have entered an invalid option."
          exit 1;;
esac

Jimbo
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

multiple 'if' statements out of array

I want to do multiple comparisons on a series of numbers from an array: I send the numbers in file1 through want to print out some info from file2 based on some conditions. The syntax just isn't correct??? awk ' NR==FNR{ a=$0 next ... (2 Replies)
Discussion started by: dcfargo
2 Replies

2. Shell Programming and Scripting

if then statements with two conditions...?

Is it possible to setup two conditions for an if then statement in a pbash script? For example, depending on the text value of a variable I parse out of an xml file, I want to assign it a numerical values. Example: if ; then VAR="25" fi if ; then VAR="25" fi Can these two... (3 Replies)
Discussion started by: audiophile
3 Replies

3. Shell Programming and Scripting

Help regarding multiple conditions

Hi All, I am new to shell scripting. Can any one say what is wrong in this if statement, that uses multiple conditions if then *************** else if ( -z $pcs && "$night_time_calc" > "$night_time" ) then ******************************** ... (4 Replies)
Discussion started by: ssenthilkumar
4 Replies

4. Shell Programming and Scripting

How do I execute multiple statements within If then else

Please help me. I have been doing this for several hours. Here is the code if then echo a b c d >> file.txt echo 1111 >> file.txt fi The reason I want the two echo is because I want these statements printed on multiple lines. I keep getting error . First it tells me... (2 Replies)
Discussion started by: asemota
2 Replies

5. Shell Programming and Scripting

Running multiple if statements

Hi, Hav automated a process, and it is working fine. for first process alone status = ` ps -ef |grep a ` if then echo " Success" > temp/logfile else echo " Failure" > temp/logfile fi Now I hav to write script to automated some 2 process and then send mail using cron.. ... (5 Replies)
Discussion started by: NehaKrish
5 Replies

6. Shell Programming and Scripting

execute multiple statements in if-else

how can we execute multiple statements in else condition i have if then statement else statements fi in else condition i have multiple statements but it executing only one statement is there any way to execute multiple statements (4 Replies)
Discussion started by: nani1984
4 Replies

7. Shell Programming and Scripting

Multiple if Statements

Hi All, I need to check for 3 conditions and if all the 3 are not satified need to say that services are not running.... is the below code correct. #********** Check to see if Service 1 is still running************** if then echo "$datetimestamp: Service1 is not running" >>... (4 Replies)
Discussion started by: ch33ry
4 Replies

8. Shell Programming and Scripting

Multiple while statements?

I'm working on a script for class as a final project. We have to ask for values (city, state, zip) five times, but the state can only be MI, IN, IL, or OH. I'm trying to do this with a while loop inside of a while loop, but I have no idea how to do it properly. Here's what I have so far: ... (3 Replies)
Discussion started by: nickzourdos
3 Replies

9. UNIX for Dummies Questions & Answers

Multiple if statements

exmaple: file1 and file2 has 1 bit if then exit else send out email fi if then exit else send out email fi it exits the 1st if. did not continue with my 2nd if. thanks in advanced. Please use CODE tags are suggested on every page when you post an item in... (7 Replies)
Discussion started by: lawsongeek
7 Replies

10. Shell Programming and Scripting

Using multiple 'for' statements

Hello, I am new to scripting and I am trying to write a simple script that creates users and adds their passwords from two files; one a user list file and another a password list file. For example, I have two files already. $ cat file1 andy stephane aby paul $ cat file2 123 234... (4 Replies)
Discussion started by: FemoTheDon
4 Replies

LEARN ABOUT SUSE

gappletviewer

GAPPLETVIEWER(1)							GNU							  GAPPLETVIEWER(1)

NAME

       gappletviewer - Load and runs an applet

SYNOPSIS

       appletviewer [OPTION]... URL...

       appletviewer [OPTION]... -code CODE

       appletviewer [OPTION]... -plugin INPUT,OUTPUT

DESCRIPTION

       The appletviewer tool loads and runs an applet.

       Use the first form to test applets specified by tag.  The URL should resolve to an HTML document from which the appletviewer will extract
       applet tags.  The APPLET, EMBED and OBJECT tags are supported.  If a given document contains multiple applet tags, all the applets will be
       loaded, with each applet appearing in its own window.  Likewise, when multiple URLs are specified, each applet tag instance is given its
       own window.  If a given document contains no recognized tags the appletviewer does nothing.

	       appletviewer http://www.gnu.org/software/classpath/

       Use the second form to test an applet in development.  This form allows applet tag attributes to be supplied on the command line.  Only one
       applet may be specified using the -code option.	The -code option overrides the URL form -- any URLs specified will be ignored.

	       appletviewer -code Test.class -param datafile,data.txt

       gcjwebplugin uses the third form to communicate with the appletviewer through named pipes.

OPTIONS

       URL OPTIONS

       -debug
	   This option is not yet implemented but is provided for compatibility.

       -encoding CHARSET
	   Use this option to specify an alternate character encoding for the specified HTML page.

       APPLET TAG OPTIONS

       -code CODE
	   Use the -code option to specify the value of the applet tag CODE attribute.

       -codebase CODEBASE
	   Use the -codebase option to specify the value of the applet tag CODEBASE attribute.

       -archive ARCHIVE
	   Use the -archive option to specify the value of the applet tag ARCHIVE attribute.

       -width WIDTH
	   Use the -width option to specify the value of the applet tag WIDTH attribute.

       -height HEIGHT
	   Use the -height option to specify the value of the applet tag HEIGHT attribute.

       -param NAME,VALUE
	   Use the -param option to specify values for the NAME and VALUE attributes of an applet PARAM tag.

       PLUGIN OPTION

       -plugin INPUT,OUTPUT
	   gcjwebplugin uses the -plugin option to specify the named pipe the appletviewer should use for receiving commands (INPUT) and the one
	   it should use for sending commands to gcjwebplugin (OUTPUT).

       DEBUGGING OPTION

       -verbose
	   Use the -verbose option to have the appletviewer print debugging messages.

       STANDARD OPTIONS

       -help
	   Use the -help option to have the appletviewer print a usage message, then exit.

       -version
	   Use the -version option to have the appletviewer print its version, then exit.

       -JOPTION
	   Use the -J option to pass OPTION to the virtual machine that will run the appletviewer.  Unlike other options, there must not be a
	   space between the -J and OPTION.

BUGS

SEE ALSO

AUTHOR

0.98								    2010-07-05							  GAPPLETVIEWER(1)
All times are GMT -4. The time now is 01:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy