03-06-2013
Do you absolutely have to use csh? It makes everything harder.
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1. Shell Programming and Scripting
After I compile a C program, when I run it from a C shell script, it does not print out the results.
e.g:
myCFile.c: main(){printf("Hey");}
myCshScript: myCFile
This does not output "Hey" to the terminal window. I am not even sure if it is executed or not.
What should I do to see the... (2 Replies)
Discussion started by: barisgultekin
2 Replies
2. Shell Programming and Scripting
hi, I have a csh script, which has
setenv X xyz etc
My shell is korn
Is there some way I can "source" this to have the variables in my current korn shell?
thanks (3 Replies)
Discussion started by: JamesByars
3 Replies
3. Shell Programming and Scripting
My shell is csh and it is required.
I have a file like sample.txt
------------------------
a b c
d
e
f
g h i
------------------------
I want set the file to a variable and print it out in the same format.
I have tried something like this, but not succed.
% cat ~/tmp/sample.txt
a b c
d... (8 Replies)
Discussion started by: anykao
8 Replies
4. Shell Programming and Scripting
I have a simple script that sets a value and reads the value in csh:
set -x
set a = 10
echo $a
The output of the script does not show the value of a
+ set a = 10
+ echo
any help would be great. (4 Replies)
Discussion started by: pt14
4 Replies
5. Shell Programming and Scripting
I am trying to call awk from a csh script using
awk '{print $1, -$2, $3}' $fvmod.vel > $fvmod.xzv
and getting awk: Command not found.
Running
awk '{print $1, -$2, $3}' $fvmod.vel > $fvmod.xzv
on the command line with the actual filenames works (2 Replies)
Discussion started by: kristinu
2 Replies
6. Shell Programming and Scripting
I have to call two awk scripts where the second one used the output from the first one. Am wondering if it may happen that the second awk might start before the first awk finished creating the file...
if ($nAnomaly == 1) then
awk -v anomaly=$Anom -v zloc="$zmin/$zmax" -v dz=$dz \
... (1 Reply)
Discussion started by: kristinu
1 Replies
7. Shell Programming and Scripting
my working shell is csh and even though if I try to run my script in plain sh, it behaves the same way. Here's a simple script:
#!/bin/sh
desc='"test my changes"'
cmd="echo \"$desc\""
$cmd
I want $desc to be passed as an argument to another command, but csh apparently doesn't like spaces in... (5 Replies)
Discussion started by: iskatel
5 Replies
8. Shell Programming and Scripting
Hi All,
I want to check existence of variable, whose name gets decided dynamically.
E.g. value of this variable,is derived as $option_"exclude" , where value of option varies depending upon user input.
I am trying to do it in a following way :
set exclude_var = `echo $option"_exclude"`... (3 Replies)
Discussion started by: Rashmee
3 Replies
9. Shell Programming and Scripting
Hi all,
I have a source config file with variables like so:
eth1_ip=192.168.1.99
eth2_ip=192.168.1.123
eth3_ip=172.16.1.1
I am trying to run a script which loops based on the number of eth interfaces on a machine and therefore modifies the variable it calls in the environment based on the... (5 Replies)
Discussion started by: landossa
5 Replies
10. Shell Programming and Scripting
Hi All,
I have file which have looks like below
abc=${def}
def=${efg}
efg= "this is the actual value"
based on "abc" value I have to call "efg" value , Am using below lines but it is not working
#!/bin/bash
source file.txt
echo $abc
Please wrap all code, files, input &... (5 Replies)
Discussion started by: Prashanth.K
5 Replies
LEARN ABOUT REDHAT
ppmquantall
ppmquantall(1) General Commands Manual ppmquantall(1)
NAME
ppmquantall - run ppmquant on a bunch of files all at once, so they share a common colormap
SYNOPSIS
ppmquantall [-ext extension] ncolors ppmfile ...
DESCRIPTION
Takes a bunch of portable pixmap as input. Chooses ncolors colors to best represent all of the images, maps the existing colors to the new
ones, and overwrites the input files with the new quantized versions.
If you don't want to overwrite your input files, use the -ext option. The output files are then named the same as the input files, plus a
period and the extension text you specify.
Verbose explanation: Let's say you've got a dozen pixmaps that you want to display on the screen all at the same time. Your screen can
only display 256 different colors, but the pixmaps have a total of a thousand or so different colors. For a single pixmap you solve this
problem with ppmquant; this script solves it for multiple pixmaps. All it does is concatenate them together into one big pixmap, run
ppmquant on that, and then split it up into little pixmaps again.
(Note that another way to solve this problem is to pre-select a set of colors and then use ppmquant's -map option to separately quantize
each pixmap to that set.)
SEE ALSO
ppmquant(1), ppm(5)
BUGS
It's a csh script. Csh scripts are not portable to System V. Scripts in general are not portable to non-Unix environments.
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
27 July 1990 ppmquantall(1)