Sponsored Content
Top Forums Shell Programming and Scripting Doing a loop to change a value in a file Post 302740625 by Scrutinizer on Thursday 6th of December 2012 12:26:58 PM
Old 12-06-2012
Code:
for file in t*.dat
do
  plot "'$file'" ...
done

This User Gave Thanks to Scrutinizer For This Post:
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

'while' loop does not change local variables?!

(I think this question desearves separate thread..) I have a problem with 'while' I am trying to set variables by 'while' and it is fine inside, but after completting the loop all changes are lost: > bb="kkkk - 111\nlllll - 22222\nbbbb - 4444" > echo "$bb" kkkk - 111 lllll - 22222 bbbb -... (3 Replies)
Discussion started by: alex_5161
3 Replies

2. Shell Programming and Scripting

loop through file to change some data

Hi, I have a file with the following data -0.00000 0.00000 0.00000 F F F 0.00000 0.00000 0.80000 F F F 0.50000 0.50000 0.60000 F F F 0.50000 0.50000 0.20000 F F F -0.00000 0.00000 0.40000 F F F I would like to change the last 3 lines from F F F to T T T. I tried looping each line but don't... (5 Replies)
Discussion started by: princessotes
5 Replies

3. UNIX for Dummies Questions & Answers

change if-else loop to while-do

Hello friends, i wrote a script which includes a couple of if-else loops but i have to change it to while-do loop as it is not allowed to use "break" in if-else loop in bash. #!/bin/bash -x NUM=`find . -name ufsdump_output1.txt | xargs egrep "End-of-tape detected"` if ; then echo "OK!"... (6 Replies)
Discussion started by: EAGL€
6 Replies

4. Shell Programming and Scripting

Variable name change in a loop

I need to do something like this:for I in var1 var2 var3 ; do $I = "Something calculated inside the loop" doneObviously it doesn't work...but is it possible doing that in other ways? Thanks in advance. (6 Replies)
Discussion started by: canduc17
6 Replies

5. Shell Programming and Scripting

Variable value dosent change after the loop changes it

i am new to shell scripting. this is similar to the code which i was writing for some other work. i want the variable 'x' to have the value which it will finally have at the end of the loop ( the number of directories ). but the value of 'x' only changes inside the loop and it remains '0' out-side... (3 Replies)
Discussion started by: chathura666
3 Replies

6. Shell Programming and Scripting

Running ffmpeg in loop seems to change reading from file

Hi everyone, I am fairly new to shell scripting. I want to read in numbers from a file (one number per line). This works perfectly fine while read CurrentLine do echo $CurrentLine done < myfile and yields the correct output: 272 745 123 If I however run a ffmpeg... (2 Replies)
Discussion started by: Thriceguy
2 Replies

7. Shell Programming and Scripting

Change a field value in a loop

Hi guys, i have an executable file that contains several records and fields. One of the records has a variable filed that must be changed each time i want to execute the file. Would it be possible that i can use a loop to change the value of that field? Suppose that the field address is: Record... (5 Replies)
Discussion started by: saeed.soltani
5 Replies

8. UNIX Desktop Questions & Answers

Change name of files to their paths -- find loop

Dear All, I have many sub-folders but each of them have a file with same name but different data. I want to either move or copy them into a new folder but they need to have the path of where they are coming as part of their name... I have managed to find the files but dont know how to change... (2 Replies)
Discussion started by: A-V
2 Replies

9. UNIX for Dummies Questions & Answers

Change argument in a for loop

In a "for i in *FD.CPY do" loop, I need to change .CPY to .layout so the executed command would be reclay blahFD.CPY >blahFD.layout What do I need to do to modify a copy of i to use after the > symbol? TIA (5 Replies)
Discussion started by: wbport
5 Replies
ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
All times are GMT -4. The time now is 01:34 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy