Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Scripting Question (For Loop) Post 302953182 by Corona688 on Tuesday 25th of August 2015 04:11:05 PM
Old 08-25-2015
Quote:
Originally Posted by shah9250
Last question though , is how does (*) cause the system to ignore spaces in file names?
It doesn't "ignore". * gives valid filenames, split where they should be.

But cramming the result of * into one string flattens it out. It forgets where the filenames begin and end.
Quote:
Also how does (*) know to refer to the output of (ls)
You have it completely backwards. * does not need ls's help to do anything. You can plug * into anything that takes multiple arguments, and the shell will convert it into filenames for you, before the command is even run.

Quote:
If (*) is a wildcard and refers to anything, how does using (*) in the for loop cause the system to read the output of ls (ignoring spaces)? Thanks!
It doesn't. ls isn't needed at all.

Last edited by Corona688; 08-25-2015 at 05:28 PM..
This User Gave Thanks to Corona688 For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

new to shell scripting: whats wrong with my if loop

#!/bin/bash for file in $HOME/*; do if ; then rm -i $file > /dev/null echo "$?" echo "$file has been deleted" fi done Been trying to learn shell scripting for a week or so now, when i run the script it doesnt display an error message, seems like it runs fine, however it doesnt delete... (10 Replies)
Discussion started by: stride6
10 Replies

2. Solaris

Problem in for loop of shell scripting in solaris

Hi below is my script for((i=0;i<=$TOTAL;i++)) do echo "IP's created are $s1.$s2.$s3.$s4" s4=`expr $s4 + 1` done where s1,2,3,4 are input varibles below error occurs while running the script syntax error at lin 11: '(' unexpected ... (12 Replies)
Discussion started by: krevathi1912
12 Replies

3. UNIX for Dummies Questions & Answers

Loop till you find a string in a fine <-- Need Help New to Unix Scripting

Guys - I am new to Unix scripting and am in need for a script that does the following. I have bits and pieces created and tested but i am just having a little difficult time getting it all together. - Loop through till it finds a string in a specific file. Any help is greatly appreciated. ... (1 Reply)
Discussion started by: mrehman
1 Replies

4. Shell Programming and Scripting

while loop in shell scripting

Hi, I have a doubt in usage of while loop in Shell script as Iam new to this. My requirement is that,I have two different directories containing some files which move files to other folder after parsing is done. In my script i wanted to add a while loop which checks for the count in these two... (5 Replies)
Discussion started by: jyothi_wipro
5 Replies

5. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies

6. Shell Programming and Scripting

Clarification on if loop in Shell scripting

Hi, I'm using Ksh and I'm seeing some of code in my programme as given below. Could you please let me know whats is this meeaing ? (I'm new to this unix) grep "1034" /u/kkk/bin/temp5.lst|cut -c1-2 >/u/kkk/bin/temp6.lst if then echo "" ... (2 Replies)
Discussion started by: shyamu544
2 Replies

7. Shell Programming and Scripting

while loop shell scripting help

hi i was wondering if someone can help me with a while loop..i have been looking at this for hours and dont no wut to do.. i have to make a menu style.. to have a beeter understanding i have linked a photo at the bottom... http://www.mypicx.com/uploadimg/772204432_08022011_1.pngand then ... (1 Reply)
Discussion started by: beerpong1
1 Replies

8. Homework & Coursework Questions

shell scripting while loop lab 15 help

hi.. this is shell scripting lab15.sh i dont understand this lab i am at the screen shot part. i was wondering if someone can take a quick look at this lab i have linked the doc below. i dont know where to start i have did the Required Errorlevels Errorlevel # but dont... (1 Reply)
Discussion started by: beerpong1
1 Replies

9. Shell Programming and Scripting

For loop scripting

Hi there again, I need some help in figuring out how to execute a for loop command to come up with my desired output. I have individual monthly files and a single file containing a list of location data for 1 year. I want to do a loop where for each monthly file say Jan.hdf, if will read the... (8 Replies)
Discussion started by: ida1215
8 Replies

10. Shell Programming and Scripting

Expect Scripting Loop Argument Desperately Needed!

I am trying to create an Expect script that does the following: 1) Telnets to an IP address and logs in with user ID and Password 2) Issue a CLI command to the server that will output data of which I am particularly interested in a DS1 clock 'Slips' value. I want to be able to keep issuing... (0 Replies)
Discussion started by: dwightlaidler
0 Replies
SDP(1)							    BSD General Commands Manual 						    SDP(1)

NAME
sdp -- scripting definition (sdef) processor SYNOPSIS
sdp -f {ahst} [-o directory | file | -] [options...] [file] DESCRIPTION
sdp transforms a scripting definition (``sdef'') file, or standard input if none is specified, into a variety of other formats for use with a scriptable application. The options are as follows: -f format Specify the output format. The format may be one or more of the following. Use these when you want to create a scriptable applica- tion: a Rez(1) input describing an 'aete' resource. s Cocoa Scripting ``.scriptSuite'' file. t Cocoa Scripting ``.scriptTerminology'' file. These formats are only necessary when creating a scriptable application that will run on Mac OS X 10.4 (Tiger) or earlier; as of 10.5 (Leopard), an application may use only an sdef. Use these when you want to control a scriptable application: h Scripting Bridge Objective-C header. You do not need to create a corresponding implementation file; Scripting Bridge will create the class implementations at runtime. -i includefile Include the type and class definitions from the specified sdef. It may be repeated to specify multiple files. This option is obso- lete; you should use an XInclude element in the sdef instead. -o directory | file | - Specify where to write the output. There are three styles: directory Write the output to automatically named files in that directory. Depending on the input and formats, sdp may generate several files. file Write all the output to that file. - Write all the output to standard output. The default is '-o .'; i.e., generate files in the current directory. Because Cocoa Scripting requires each suite to be in a separate file, using -o file with -f s or -f t is usually not a good idea. Some output formats have additional options relevant only to that format. For scriptSuite and scriptTerminology files (-f s and -f t): -V version Specify the minimum system version to be compatible with, for example, ``-V -10.4''. The default is to assume the current system ver- sion. Specifying anything before 10.3 will use NSString for 'file' type attributes, and will warn about non-object direct parameters. For Scripting Bridge Objective-C header files (-f h): --basename name, -N name Specify the ``base'' name. This name becomes the base name of the generated header and the prefix attached to all the generated classes. For example, saying --basename iTunes would result in a header file ``iTunes.h'' defining a iTunesApplication class. --hidden, -A Output definitions even for items the scripting definition marks as hidden. All such definitions will be flagged as deprecated, since hidden items are usually hidden for a reason. SEE ALSO
sdef(5) BUGS
sdp's error reporting leaves much to be desired. It does not provide line numbers for errors, though it will describe the element. It will not warn you of certain types of mistakes, such as using two different names with the same code (or vice versa), and will return a zero sta- tus even for erroneous input. Mac OS X July 12, 2007 Mac OS X
All times are GMT -4. The time now is 04:56 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy