02-01-2006
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
I've been assigned the task of modifying a script which reads in names of tables from a list file, exports a 30 days worth of data from these tables, then deletes the table. The list file will now contain a table name and a number next to it indicating how many days to archive. I need... (1 Reply)
Discussion started by: MadHatter
1 Replies
2. Shell Programming and Scripting
i have an external device sending serial messages i want to connect this device to a serial port in my sun blade box and record those messages to a file, how can i read the serial port and write it to file?
Thanks (4 Replies)
Discussion started by: guilartec
4 Replies
3. Shell Programming and Scripting
Hi,
I have a file called inputs. Now that file has the values like this:
1 2 3
Now In my script called 'get.sh' I do this :
exec < inputs
read a b c d
Now I know that there will not be any value in d. How can I check it. I need the exact condition for checking whether the variable has... (1 Reply)
Discussion started by: sendhilmani123
1 Replies
4. Shell Programming and Scripting
Hi,
I have a script that takes the contents of another file as inputs. Its assumed that there are 3 values in the input file that are seperated by '|'. I have to check in my script, whether the filed seperator used in the input file is '|' or not. If its not a '|' I have to print a error... (13 Replies)
Discussion started by: sendhilmani123
13 Replies
5. UNIX for Dummies Questions & Answers
I have couple of shell scripts.
Each shell script accepts command line argument as inputfilename.
Each shell script creates a summary file, status file.
All these files are stored in a particular directory...Eg
InputFile is to be picked from /home/ProjectName/ftp_inputfiles/
Outputs are to... (1 Reply)
Discussion started by: Amruta Pitkar
1 Replies
6. Shell Programming and Scripting
Hello;
Please I need to read inputs from a file change 1 or 2 things the output to another file. (1 Reply)
Discussion started by: jimoney
1 Replies
7. Shell Programming and Scripting
I need to write what I thought would be a fairly simple 2-line UNIX script. It can be written PERL, csh, ksh...or whatever is easiest.
The entire script will be:
Begin Scipt
source MySourceFile
execute MyExecutable.exe
End Script
The problem is that MySourceFile can not be... (1 Reply)
Discussion started by: MMorrison
1 Replies
8. Shell Programming and Scripting
I want a script that will prompt a user to enter 10 numbers and out put them into a file. This what I have so far, but isn't working. I'm guessing it's something easy I'm not seeing. Thanks for any help.
#!/usr/bin/ksh
echo "Enter 10 numbers"
for i in 1 2 3 4 5 6 7 8 9 10
do
read .... ... (8 Replies)
Discussion started by: AxlVanDamme
8 Replies
9. Shell Programming and Scripting
Hi,
Am trying to store the user inputs into a file, but the below code will store only the first line of the values. I need to store all the user input values which may contain one or more lines. Thanks in advance.
echo "please enter file names";
read name;
echo $name>/tmp/test (11 Replies)
Discussion started by: rogerben
11 Replies
10. Shell Programming and Scripting
Good morning ..,
I have a problem to run my object program. Before, I run my program in cygwin and there is no problem. When I tried in linux (ubuntu), the terminal said that space.exe : command not found.
this is the code in my shell
space.exe gr1
result
space.exe: command not found... (2 Replies)
Discussion started by: weslyarfan
2 Replies
LEARN ABOUT DEBIAN
pbmreduce
pbmreduce(1) General Commands Manual pbmreduce(1)
NAME
pbmreduce - read a portable bitmap and reduce it N times
SYNOPSIS
pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]
DESCRIPTION
Reads a portable bitmap as input. Reduces it by a factor of N, and produces a portable bitmap as output.
pbmreduce duplicates a lot of the functionality of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
faster.
pbmreduce can be used to "re-halftone" an image. Let's say you have a scanner that only produces black&white, not grayscale, and it does a
terrible job of halftoning (most b&w scanners fit this description). One way to fix the halftoning is to scan at the highest possible res-
olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce. You can even correct the brightness of an image, by
using the -value flag.
OPTIONS
By default, the halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
can be used to specify simple thresholding. This gives better results when reducing line drawings.
The -value flag alters the thresholding value for all quantizations. It should be a real number between 0 and 1. Above 0.5 means darker
images; below 0.5 means lighter.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)
AUTHOR
Copyright (C) 1988 by Jef Poskanzer.
02 August 1989 pbmreduce(1)