05-28-2009
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
say i would like to check if the file is existed before i use rm command. How can i do it?
i know if i can use find, but i would like to have a good interface (in a shell script)
thks (3 Replies)
Discussion started by: gusla
3 Replies
2. Shell Programming and Scripting
I have a shell script that runs all the time looking for a certain type of file and then it processes the file through a series of other scripts. The script is watching a directory that has files uploaded to it via SFTP. It already checks the size of the file to make sure that it is not still... (3 Replies)
Discussion started by: heprox
3 Replies
3. Shell Programming and Scripting
Hi All,
I need to create a file which contains the list of all the files present in that directory.
e.g.,
ls /export/home/user/*.dat > list_file.dat
but what i am getting is:
$ ls /export/home/user/*.dat > list_file.dat
/export/home/user/*.dat: No such file or directory
But I have... (1 Reply)
Discussion started by: pranavagarwal
1 Replies
4. Shell Programming and Scripting
Hi
Does anybody know how I can check if a file exists
i.e. see bellow, this doesn't work by the way and if tried countless variations on this
file1=$one/file111.txt
if
then
echo "Present"
else
echo "Not present"
fi
result :
Not present
(file is already present, eventhough its... (3 Replies)
Discussion started by: gksenthilkumar
3 Replies
5. Shell Programming and Scripting
Hi All,
Please help me out in fllowing problem.
I have text file which contains the data in following format.
Contents of file.txt are
setregid02
Test that setregid() fails and sets the proper errno values when a
non-root user attemps to change the real or effective... (2 Replies)
Discussion started by: varshit
2 Replies
6. Shell Programming and Scripting
Hi,
I am trying to create a bash script which will check if file exist then remove that file else do nothing. I have to do same process for three files in same script. I have written code for one file and trying to run it.
if
then
rm -r /user1/abc/File1
fi
When I run this code it... (1 Reply)
Discussion started by: palak08
1 Replies
7. Shell Programming and Scripting
Hi,
I created following script to check if file exist:
#!/bin/bash
SrcDir=$1
SrcFileName=$2
SrcTimePeriod=$3
if ;then
echo 1
else
echo 0
fi
I ran it like: /apps/Scripts/FileExist.sh /apps/Inbox file1 2nd_period_2010
Even file exist at that location, my above command is... (4 Replies)
Discussion started by: palak08
4 Replies
8. Shell Programming and Scripting
I am having following folder structure.
/root/audios/pop
/root/audios/jazz
/root/audios/rock
Inside those pop, jazz, rock folders there are following files,
p1.ul, p2.ul, p3.ul, j1.ul, j2.ul, j3.ul, r1.ul, r2.ul, r3.ul
And I have a file named as "audio.txt" in the path /root/audios,... (11 Replies)
Discussion started by: gopikrish81
11 Replies
9. Shell Programming and Scripting
Hello,
I have a comma delimited file such as:
cat /statistics/support/input.txt
ID,Serial,quantitity,atribute1,atribute2
1,89569698,5,800,9900,
1,35568658,8,1200,5550
1,89569698,8,320,5500
1,68753584,85,450,200
ID should always have 1 digit, Serial 8 digits, and the others may... (2 Replies)
Discussion started by: alex2005
2 Replies
LEARN ABOUT ULTRIX
pnmdepth
pnmdepth(1) General Commands Manual pnmdepth(1)
NAME
pnmdepth - change the maxval in a portable anymap
SYNOPSIS
pnmdepth newmaxval [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Scales all the pixel values, and writes out the image with the new maxval. Scaling the colors down to a
smaller maxval will result in some loss of information.
Be careful of off-by-one errors when choosing the new maxval. For instance, if you want the color values to be five bits wide, use a max-
val of 31, not 32.
One important use of pnmdepth is to convert a new format 2-byte-per-sample PNM file to the older 1-byte-per-sample format. Before April
2000, essentially all raw (binary) format PNM files had a maxval less than 256 and one byte per sample, and many programs may rely on that.
If you specify a newmaxval less than 256, the resulting file should be readable by any program that worked with PNM files before April
2000.
SEE ALSO
pnm(5), ppmquant(1), ppmdither(1)
AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer.
08 April 2000 pnmdepth(1)