06-12-2009
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I need to suppress the output to the screen. I am appending to a file so do not need the output on the screen in the CLI environment.
eg.
cat $HOME/somefile >> $HOME/anotherfile
I am doing this a number of times with SQL output files so I can look at the finished file not on the screen in the... (3 Replies)
Discussion started by: jagannatha
3 Replies
2. UNIX for Advanced & Expert Users
Hi,
One of our application is producing log files. But if we open the log file in vi or less or view mode, it shows all the special characters in it. The 'cat' shows correctly but it shows only last page. If I do 'cat' <file_name> | more, then again it shows special characters.
... (1 Reply)
Discussion started by: divakarp
1 Replies
3. Shell Programming and Scripting
I am using this command
find . -type f -mmin "+$t" > holder
Unfortunatley that is also printing files that begin with a period. Such as .bash_history.
What can I do to supress files that begin with a period? (1 Reply)
Discussion started by: chrchcol
1 Replies
4. UNIX for Advanced & Expert Users
Hi All
this is a simple script
#! /bin/bash
FileCnt=`ls -lrt $DIR/* | wc -l`
echo $FileCnt
how could i escape the error msg if there are no files in $DIR
ls: /home/sayantan/test/files/cnt/*: No such file or directory
0
Looking forward for a quick reply
Regards, Newbie (2 Replies)
Discussion started by: newbie07
2 Replies
5. Shell Programming and Scripting
Hi
I have a script which connects to oracle using sqlplus
if ! check_sqlplus "$ORACLE_SID" ; then
echo "Unable to use sqlplus for sid $ORACLE_SID"
return 1
else
echo "attempting to connect to database"
echo $ORACLE_HOME
echo $ORACLE_SID
echo "Status before entering... (2 Replies)
Discussion started by: xiamin
2 Replies
6. Shell Programming and Scripting
Hi,
I am trying to run a script using awk and sed a few times.
The script itself seems to work fine but in a final awk statement it throws up a warning:
awk: warning: escape sequence `\.' treated as plain `.'
script:
... (3 Replies)
Discussion started by: HugoDarley
3 Replies
7. Shell Programming and Scripting
Hi Team ,
I want supress the meaning of * while passing it as parameter.
I have file which contains file format and destination directory.
let say abc* |/home/xyz
I had function which will read these values and pass it to another function.
Code looks like below
func1 ()
{... (6 Replies)
Discussion started by: gvkumar25
6 Replies
8. Shell Programming and Scripting
Hi,
I was looking for a simple code to suppress the text between 2 characters. the characters can be of same kind like "*" or "(" and ")". The number of characters are not consistent and could vary.
How can I suppress the text between 2 characters?
Example:
Input : Hello (Within Bracket)... (8 Replies)
Discussion started by: ahmedwaseem2000
8 Replies
9. Shell Programming and Scripting
I am running the ETL job to passing the database username,pssswd positional arguments to shell script (bash) and how can we suppress/hide the password from ps command. (2 Replies)
Discussion started by: pimmit22043
2 Replies
10. Shell Programming and Scripting
Hello,
I know this isn't exactly a shell script question but I'm not sure where else to post it.
I am running a java program out of a shell script. There are times when I get an error like,
"java.lang.ArrayIndexOutOfBoundsException: 22
at blah, blah
at blah, blah
... (3 Replies)
Discussion started by: LMHmedchem
3 Replies
LEARN ABOUT MINIX
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)