Get number of elements in a list Post: 302536689

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1. Shell Programming and Scripting

a list of number

Hi, I wrote a shell program and I need to only accept a list of numbers from 01 to 24 in my argument 1 ($1) before the program can continue. Does anyone know a better way to do it beside use the case command with 24 lines of condition? Thanks in advance!

2. AIX

How to list mirrored elements? (pv, vg, lv)

Hello, How can I list mirrored elements, such as PV, VG or LV? (and others if applicable). On AIX 4.3.3 and 5.3.0. I tried the commands: lscfg|grep hd lspv lsvg lsvg -l (of each vg) lslv (and some options) But could not find what am I looking for. I saw a "number of copies", but I am...

3. Shell Programming and Scripting

How to extract elements in a field using a number

Hi, I face difficulty where the number which I grep before I would like to use it as number to grep again in another file. For example in file 1, I extract the second field and assign to variable "char" in a while loop. And then, I grep again this char to get i and j. char=`echo "${LINE}"|...

4. Shell Programming and Scripting

eval, array, number of elements - couldn't get it

I try to get a number of elements in an array, using dynamic array name. I need the array name to be dynamic. The array name is constructed as 'inf_ln_$nmb', where $nmb is a file line number So, say I have the arr 'inf_ln_4': > for (( el=0; el<${#inf_ln_4}; el++ )); do > echo "$el:...

5. Shell Programming and Scripting

Number of elements in Word list

Hello everyone, can anyone let me know if there is a way to get the count of elements in a word list that I use for a for loop in the way: for single_result in $results ; do ....... I know I can increment a counter in my for loop, but would there be a way to know the total number of elements in...

6. Shell Programming and Scripting

To get Port number alone from the list

~]#netstat -vatn | grep LISTEN tcp 0 0 0.0.0.0:34895 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN ...

7. UNIX for Dummies Questions & Answers

make ls retrive ordered list of elements

Hello friends!! I have a question regarding the use of ls in unix. I have a folder with files: t1.txt t2.txt t3.txt t4.txt ... t10.txt When I make an ls I always get: t10.txt t1.txt t2.txt t3.txt .. t9.txt

8. Shell Programming and Scripting

Number of elements, average value, min & max from a list of numbers using awk

Hi all, I have a list of numbers. I need an awk command to find out the numbers of elements (number of numbers, sort to speak), the average value the min and max value. Reading the list only once, with awk. Any ideas? Thanks!

9. Shell Programming and Scripting

Issue with the incorrect number of array elements

Hello , I have a file : RestartSession.txt with the below contents : Backup p203pcrw01_OS_Weekly Failed full 10/11/2015 10:00:07 PM 1444572007 10/11/2015 10:26:23 PM 1444573583 0:00 0:26 18.76 1 08 0 0 0 2 2 180668 ...

10. Shell Programming and Scripting

List files with number to select based on number

Hi experts, I am using KSH and I am need to display file with number in front of file names and user can select it by entering the number. I am trying to use following command to display list with numbers. but I do not know how to capture number and identify what file it is to be used for...

LEARN ABOUT XFREE86

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

a list of number

Discussion started by: whatisthis

2. AIX

How to list mirrored elements? (pv, vg, lv)

Discussion started by: cactux

3. Shell Programming and Scripting

How to extract elements in a field using a number

Discussion started by: ahjiefreak

4. Shell Programming and Scripting

eval, array, number of elements - couldn't get it

Discussion started by: alex_5161