08-14-2009
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello experts,
I run Solaris 9. I have a below script which is used for gunzip the thousand files from a directory.
----
#!/usr/bin/sh
cd /home/thousands/gzipfiles/
for i in `ls -1`
do
gunzip -c $i > /path/to/file/$i
done
----
In my SAME directory there thousand of GZIP file and also... (4 Replies)
Discussion started by: thepurple
4 Replies
2. UNIX for Dummies Questions & Answers
If I execute the command "ls -l /export/home/abcde/dev/proj/code/* | awk -F' ' '{print $9}' | cut -d'/' -f6-8" it will list all the files in /export/home/abcde/dev/proj/code/ directory as well as the files in subdirectories also
proj/code/test.sh
proj/code/test1.c
proj/code/unix... (8 Replies)
Discussion started by: shyjuezy
8 Replies
3. Shell Programming and Scripting
Hello dear Community,
I have a task to wrtie a script which will gzip not zipped files in a directory and itīs subdirectories. I succeeded in gzippung the directory but not the subdirectories:
#/bin/bash
#go to the directory where to zip
cd $1
#Zip unzipped files
for i in `ls | xargs... (2 Replies)
Discussion started by: JamesCarter
2 Replies
4. UNIX for Dummies Questions & Answers
Here is my question in bash
for f in f1 f2
do
cd $f
cd ??? # i need to enter the two layers of sub folders then find the folder named "abcde" ?
cd .. # how to get out two layers subdirectories?
cd ..
done (2 Replies)
Discussion started by: ksgreen
2 Replies
5. Shell Programming and Scripting
Here is my question in bash
for f in f1 f2
do
cd $f
cd ??? # i need to enter the two layers of sub folders then find the folder named "abcde" ?
cd .. # how to get out two layers subdirectories?
cd ..
done (3 Replies)
Discussion started by: ksgreen
3 Replies
6. UNIX for Advanced & Expert Users
Hi All,
I have a random test file: test.txt, size: 146
$ ll test.txt
$ 146 test.txt
Take 1:
$ cat test.txt | gzip > test.txt.gz
$ ll test.txt.gz
$ 124 test.txt.gz
Take 2:
$ gzip test.txt
$ ll test.txt.gz
$ 133 test.txt.gz
As you can see, gzipping a file and piping into gzip... (1 Reply)
Discussion started by: hanfresco
1 Replies
7. Shell Programming and Scripting
#!/bin/bash
#
name=$1
type=$2
number=1
for file in ./**
do
if
then
filenumber=00$number
elif
then
filenumber=0$number
fi
tempname="$name""$filenumber"."$type"
if (4 Replies)
Discussion started by: TheGreatGizmo
4 Replies
8. UNIX for Dummies Questions & Answers
Hi
You might find it very trivial but actually don't know how to loop through all sub-directories and their child directories into a csh. bash was easier I believe but here I am, stuck with csh. So elaborately here's my problem:
Let's say I have my parent directory named C-H/ under which I have... (15 Replies)
Discussion started by: saleheen
15 Replies
9. Shell Programming and Scripting
Hi frnds,
My requirement is I have a zip file with name say eg: test_ABC_UH_ccde2a_awdeaea_20150422.zip
within that there are subdirectories on each directory we again have .zip files and in that we have files like mama20150422.gz and so on.
Iam in need of a bash script so that it unzips... (0 Replies)
Discussion started by: Ravi Kishore
0 Replies
10. Shell Programming and Scripting
Hii,
Could someone help me to append string to the starting of all the filenames inside a directory but it should exclude .zip files and subdirectories.
Eg.
file1: test1.log
file2: test2.log
file3 test.zip
After running the script
file1: string_test1.log
file2: string_test2.log
file3:... (4 Replies)
Discussion started by: Ravi Kishore
4 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)