Loops within loops Post: 68753

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

loops?

hello....very new user to unix...and i have a question..i am not sure if there is such a thing For example...the user is asked if he likes Bananas....if he says yes.... echo You like Bananas $name at the end of the script it echos all that the user has entered so they can read it.... but...

2. UNIX for Dummies Questions & Answers

While Loops

I'm trying to create a loop that will prompt the user for 15 values, not forcing them to enter all 15. If the user enters through one or more of the prompts the null value needs to be converted to 0, otherwise set the parameter = to the value entered: ex. Please enter file no #1: 17920 ...

3. UNIX for Dummies Questions & Answers

two loops

Hi, how can I use "for" to have two loops : this is my script : for i in (A B C) do for j in (a b c) do echo $i$j done done #End I want to print out Aa Ab Ac .... But I have error message : syntax error at line 1 : `(' unexpected Many thanks before. How should I use "for" ??

4. Shell Programming and Scripting

while loops

Hi I've a file like so: Now, I want to read my file and take ex. the Media ID and the Type for each groups of Media (Media1,Media2,...,Media(n): cat /tmp/file|\ while read FILE do while $(FILE|cut -d: -f1)=Media$i do #here will be some test, ex: #if Media ID < 23 ...

5. UNIX for Dummies Questions & Answers

Help with While Loops

I am traversing down a list, and I am not quite sure how to tell the loop to break when it's done going through the file. #!/bin/sh while : do read list <&3 echo $list done is the code. The file "list" is simply 5 4 3 2 1 any advice on how to break the loop after the file is...

6. Shell Programming and Scripting

Help with the 2 for loops

#!/bin/bash IFS=$'\n' A= a c b t g j i e d B= t y u i o p counter=0 found="" for i in $(cat $A) do for j in $(cat $B) do if then found="yes" fi done if then

7. Shell Programming and Scripting

Loops

Hi All, I want to execute a script the number of times a user enters. Please can you advise on hor can I do the same. Many Thanks, Shazin

8. UNIX for Dummies Questions & Answers

loops with tr

Hello, I'm not sure if this is more appropriate for the 'unix for dummies' or the 'unix for experts' forum because I'm new to this forum and this is the second topic I've discussed, but if you could let me know which one was more appropriate for something like this, please do! So in tr (an...

9. UNIX for Advanced & Expert Users

Help with loops?

I'm trying to understand better the while and until loops, can someone help me with this example? #!/bin/bash # Listing the planets. for planet in Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto do echo $planet # Each planet on a separate line. done echo; echo for...

10. UNIX for Dummies Questions & Answers

Need help with for loops

Why wont my for statements work? Im trying to get this script to swich to a user an if you put in a start/stop/or restart paramater to do just that for each user. I commented out the actual start/stop actions to test it just by using echos and not do anything hasty in the environment but it...

LEARN ABOUT LINUX

shtool-subst

SHTOOL-SUBST.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-SUBST.TMP(1)

NAME

       shtool-subst - GNU shtool sed(1) substitution operations

SYNOPSIS

       shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
       [-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]

DESCRIPTION

       This command applies one or more sed(1) substitution operations to stdin or any number of files.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -n, --nop
	   No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.

       -w, --warning
	   Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
	   operations resulted in no content change on all files.

       -q, --quiet
	   Suppress warning on substitution operation resulting in no content change.

       -s, --stealth
	   Stealth operation. Preserve timestamp on file.

       -i, --interactive
	   Enter interactive mode where the user has to approve each operation.

       -b, --backup ext
	   Preserve backup of original file using file name extension ext.  Default is to overwrite the original file.

       -e, --exec cmd
	   Specify sed(1) command directly.

       -f, --file cmd-file
	   Read sed(1) command from file.

EXAMPLE

	#   shell script
	shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]

	#    RPM spec-file
	%install
	    shtool subst -v -n 
		-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g' 
		-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g' 
		`find . -name Makefile -print`
	    make install

HISTORY

       The GNU shtool subst command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 2001 for GNU shtool.  It was prompted
       by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.

SEE ALSO

       shtool(1), sed(1).

18-Jul-2008							   shtool 2.0.8 					       SHTOOL-SUBST.TMP(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

loops?

Discussion started by: jonas27

2. UNIX for Dummies Questions & Answers

While Loops

Discussion started by: vdc

3. UNIX for Dummies Questions & Answers

two loops

Discussion started by: big123456

4. Shell Programming and Scripting

while loops

Discussion started by: nymus7