Im trying to code some logic into a test script to test for the existence of a file before recreating it. Im using the following line to test for this:
if -r test.txt;
However I get the error message
./testScript.sh: -r: not found
Having read through the man pages im still not clear whats... (2 Replies)
Can I determine when the particular file was created, in korn-shell. Can please someone help me. If possible please mail the solution to me.
my mail id: bharat.surana@gmail.com (1 Reply)
I have tried few examples in the internet but all of them are different and none worked. I need to check if a file exists in a directory if it does not then exit . here is what I have for now
$filename ="/usr/local/net/var/lib/directoryservice/sync.disable"
if ;
then
echo "The file exists"... (2 Replies)
Hi All,
working on AIX 5.3.
Requirement is:
Shell script in ksh to check if any file exists in 4 folders as below:
1. /FILE/INB/INT1
2. /FILE/INB/INT2
3. /FILE/INB/INT3
4. /FILE/INB/INT4
Thanks a lot for your time!
a1_win. (3 Replies)
Hi,
I'm new to UNIX, at least shell programming and am having trouble figuring out a problem i'm having. In one section in my nested if statement, i want the program to test if the file does not exist, based on an argument supplied at the command line by the user. What i have is
elif ; then... (3 Replies)
Hi all,
What is the simplest way to setting a variable to $1 if it exists ?
If I go with name=${"$1":-abc}, bash complains "bad substitution",
So I use
name="$1"
name=${name:-abc}
But is there a way to fix this "bad substitution" ?
Thanks! (2 Replies)
Hi all,
Using sh/csh, unfortunately shell scripts are not my strong suit.
Trying to write a script that gets called from a program for pre-processing.
The program passes individual components of a UNC (//server/path1/path2/filename).
Thus the unc path of: //server/path1/path2/filename, is... (7 Replies)
Can some one please help me with the syntax in shell script for the below :
if $var1 exists in ('val1','val2','val3')
I want to execute a set of commands if the value of var1 variable matches any one of the given string values. Please let me know if there are any other option to go by.
... (10 Replies)
Hi All,
I am a beginner in this and trying to write a shell script in linux which will :
1. Ask for a file name and check if its exists.
2. If file exists only then it will ask for the new target folder, after entering target folder name it will check if it exists.
3. If target folder... (3 Replies)
Hi,
I need all your help to achieve the below functionality.
I have a big 2 GB file and inside the file we need to identify, whether having a comma(,) or pipe(|) or tab or fixed position or semicolon(;) delimiter. If any of those delimiter found need to replace the file with pipe(|)... (1 Reply)
Discussion started by: lkeswar
1 Replies
LEARN ABOUT REDHAT
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)