Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: nested for loops
Top Forums Shell Programming and Scripting nested for loops Post 302357878 by edidataguy on Wednesday 30th of September 2009 11:02:53 PM
Old 10-01-2009
Your approach is correct.
The top loop will get one file at a time.
The inner loop, will compare the above first file with all the files in the directory.
The only hitch is, in the inner loop, when comparing, every file will be comparing to itself once. You can take care of this by comparing the file name in an if-else condition.

Lets say you have files A, B, C, D
What you will get is:
Code:
 
Loop1     Loop2     Loop3     Loop4
-----     -----     -----     -----
*A=A       B=A       C=A       D=A
A=B      *B=B       C=B       D=B
A=C       B=C      *C=C       D=C
A=D       B=D       C=D      *D=D

A=A then if-else condition to ignore?.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Complex problem about nested for loops

Hey, I'm writing this bash script that will test print me many copies of the same program but with different combos of 4 variables being between 1 and 100. Here's the code: #! /bin/bash x=0 for ((a=1; a < 101; a++)) do for ((b=1; b < 101; b++)) do for ((c=1; c < 101; c++)) do for... (4 Replies)
Discussion started by: Silverlining
4 Replies

2. Shell Programming and Scripting

Grepping within nested for loops

Good morning - I have publication lists from 34 different faculty members. I need to end up with the numbers of publications in common across all 34 faculty. I need to grep person1 (last name) in list2, person1 in list3, person1 in list 4, etc., then person2 in list3, person 2 in list4, etc.,... (2 Replies)
Discussion started by: Peggy White
2 Replies

3. Shell Programming and Scripting

file reading in nested loops

I have to to read files simultaneously in two nested loops,but am getting error can anyone do the needful. useridFile=userIds.txt fname=kiran.txt exec<$useridFile while read line do echo "User IDs are..$line" USER_ID=$line REMOTE_DIR_LOCATION="/home/test/$USER_ID" SOURCE_DIR=$USER_ID... (1 Reply)
Discussion started by: KiranKumarKarre
1 Replies

4. Shell Programming and Scripting

Nested while loops (ksh scripting)

You can use one while inside another? I made the following script (without really knowing if I can use two while) to get 3 numbers different from each other at random: num1=$(( $RANDOM % 10 )) num2=$num1 while do num2=$(( $RANDOM % 10 )) done num3=$num1 while do while do... (1 Reply)
Discussion started by: ale.dle
1 Replies

5. Shell Programming and Scripting

Need help with Regular Expressions and nested loops

Ok... am going slightly loopy trying to get this working (no pun intended) What I need is to modify this code which takes a string input then echo's each character on a seperate line, to do the same thing but to put DIGIT: in front of numbers and LETTER: in front of letters. I know a regular... (5 Replies)
Discussion started by: U_C_Dispatj
5 Replies

6. Shell Programming and Scripting

KSH nested loops?

KSH isn't my strong suit but it's what my company has to offer. I've got a script with two nested loops, a FOR and UNTIL, and that works fine. When I add a CASE into the mix I end up getting "Unexpected 'done' at line xx" errors. Any suggestions on this? for divi in at ce ci cm co de di fl... (9 Replies)
Discussion started by: mrice
9 Replies

7. UNIX for Dummies Questions & Answers

Faster than nested while read loops?

Hi experts, I just want to know if there is a better solution to my nested while read loops below: while read line; do while read line2; do while read line3; do echo "$line $line2 $line3" done < file3.txt done < file2.txt done < file1.txt >... (4 Replies)
Discussion started by: chstr_14
4 Replies

8. Shell Programming and Scripting

Nested for loops

Greetings All, The following script attempts to enumerate all users in all groups in the group file(GROUP) and echo the following information: GROUP ---> USER The script is as follows: IFS="," for GROUP in `ypcat -k group | cut -d" " -f1` do for USER in `ypcat -k group... (13 Replies)
Discussion started by: jacksolm
13 Replies

9. UNIX for Dummies Questions & Answers

Executing nested loops+foreach

It's been a while since I used csh formatting and I am having a little bit of trouble with a few things. Things seem so much easier to execute in Matlab, however I need to do this on the terminal because of the programs I am trying to interact with. So here's what I want to do: I have a file... (0 Replies)
Discussion started by: katia
0 Replies

10. Shell Programming and Scripting

two while nested loops

for server in $(echo `cat /tmp/ScanHosts_${USERSNAME}.TXT`) do for portnumber in $(echo `cat /tmp/ScanPorts_${USERSNAME}.TXT`) do #echo ${server} ${portnumber} ... (3 Replies)
Discussion started by: SkySmart
3 Replies

LEARN ABOUT DEBIAN

fntsample

fntsample(1)						      General Commands Manual						      fntsample(1)

NAME

       fntsample - PDF and PostScript font samples generator

SYNOPSIS

       fntsample [ OPTIONS ] -f FONT-FILE -o OUTPUT-FILE
       fntsample -h

DESCRIPTION

       fntsample  program  can	be  used  to generate font samples that show Unicode coverage of the font and are similar in appearance to Unicode
       charts. Samples can be saved into PDF (default) or PostScript file.

OPTIONS

       fntsample supports the following options.

       --font-file, -f FONT-FILE
	      Make samples of FONT-FILE.

       --font-index, -n IDX
	      Font index for FONT-FILE specified using --font-file option.  Useful for files that contain multiple fonts,  like  TrueType  Collec-
	      tions (.ttc).  By default font with index 0 is used.

       --output-file, -o OUTPUT-FILE
	      Write output to OUTPUT-FILE.

       --other-font-file, -d OTHER-FONT
	      Compare FONT-FILE with OTHER-FONT.  Glyphs added to FONT-FILE will be highlighted.

       --other-index, -m IDX
	      Font index for OTHER-FONT specified using --other-font-file option.

       --postscript-output, -s
	      Use PostScript format for output instead of PDF.

       --svg, -g
	      Use SVG format for output.  The generated document contains one page.  Use range selection options to specify which.

       --print-outline, -l
	      Print  document  outlines data to standard output.  This data can be used to add outlines (aka bookmarks) to resulting PDF file with
	      pdfoutline program.

       --include-range, -i RANGE
	      Show characters in RANGE.

       --exclude-range, -x RANGE
	      Do not show characters in RANGE.

       --style, -t "STYLE: VAL"
	      Set STYLE to value VAL.  Run fntsample with option --help to see list of styles and default values.

       --help, -h
	      Display help text and exit.

       Parameter RANGE for -i and -x can be given as one integer or a pair of integers delimited by minus sign (-).  Integers can be specified	in
       decimal,  hexadecimal  (0x...) or octal (0...) format.  One integer of a pair can be missing (-N can be used to specify all characters with
       codes less or equal to N, and N- for all characters with codes greather or equal to N).	Multiple -i and -x options can be used.

EXAMPLES

       Make PDF samples for font.ttf and write them to file samples.pdf:
	      fntsample -f font.ttf -o samples.pdf

       Make PDF samples for font.ttf, compare it with oldfont.ttf and highlight new glyphs. Write output to file samples.pdf:
	      fntsample -f font.ttf -d oldfont.ttf -o samples.pdf

       Make PostScript samples for font.ttf and write output to file samples.ps.  Show only glyphs for characters with	codes  less  or  equal	to
       U+04FF but exclude U+0370-U+03FF:
	      fntsample -f font.ttf -s -o samples.ps -i -0x04FF -x 0x0370-0x03FF

       Make PDF samples for font.ttf and save output to file samples.pdf adding outlines to it:
	      fntsample -f font.ttf -o temp.pdf -l > outlines.txt
	      pdfoutline temp.pdf outlines.txt samples.pdf

AUTHOR

       Copyright (C) 2007 Eugeniy Meshcheryakov <eugen@debian.org>
       Homepage: <http://fntsample.sourceforge.net/>

SEE ALSO

       pdfoutline(1)

								    2010-10-14							      fntsample(1)
All times are GMT -4. The time now is 11:22 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy