I have a requirement to close all the file descriptors from 3 to 1024 for a particular application.
Right now, this is how I do it ..
for ( int i = 3 ; i <= 1024; ++i )
close(i);
The change I am looking at is, I want to do away with the number 1024 and replace it with a constant which... (4 Replies)
Hello,
I read and search through this wonderful forum and tried different approaches but it seems I lack some knowledge and neurones ^^
Here is what I'm trying to achieve :
file1:
test filea 3495;
test fileb 4578;
test filec 7689;
test filey 9978;
test filez 12300;
file2:
test filea... (11 Replies)
Hi Experts,
I have a requirement where i need to update the below items in file,
1. END TIME
2. PREV_STATUS
For the first time the PREV_status and end time of all job the job will be sysdate & NULL reply as below,
Session_name,Load Type,Frequency,Seesion End time,Prev_Status... (2 Replies)
Hi, I need to edit a file Protein Data Bank (pdb) and then open that file with the program VMD but when I edit the file with awk, it changes pdb format and the VMD program can not read it.
I need to subtract 34 to field 6 ($ 6).
this is a pdb file :
ATOM 918 N GLY B 103 -11.855 8.675... (8 Replies)
Hi
I need some help with a task, i am an absolute newbie to any form of shell scripting and request guidance.
Task:
1. Read a config file in form of name value pair
ex
host=www.test.com
port=8080
binding="dynamic" or "other" or "something else"
key1=value1
key2=value2
key3=value4... (4 Replies)
I have to do a read operation for a field in property file, which looks like follows:
123|xyz|datetime|count
'|' is delimiter.
Finally I managed to read the contents of property file using statement like
cut -d"|" -f1 $PROPERTIES_FILE | tr '\n' ' ' <-- Reading first column
But now I... (2 Replies)
Hi guys,
I am writing a Makefile with some strange features.
What I have is:
list of files *.efi
list of guids (guid is just a number)
one *.efi file is supposed to be used with one guid, so efi file and guid is a pair.
What I need is:
list of files *.fv
How to make *.fv file... (1 Reply)
Hi gurus,
I wanted to split main file in 20 files with 2500 lines in each file. My main file conatins total 2500*20 lines. Following awk I made, but it is breaking with error.
awk '{ for (i = 1; i <= 20; i++) { starts=2500*$i-1; ends=2500*$i; NR>=starts && NR<=ends {f=My$i".txt"; print >> f;... (10 Replies)
I am very new to scripting and I know this request is simple but I am having no luck with it.
I have a file a.dat with the following data in it.
aa
bb
cc
dd
I need to run a script that will take each line of a.dat and put dsjc/ubin/ in front of each record, so the output looks like
... (2 Replies)
Hi,
I am converting a .DBF file to pipe delimited file
my requirement is like
lets say my .DBF is residing in path /a/b/c/d/f/abc.DBF
I need my .txt file as
having a column with source _cd =f
sample data in .DBF in folder "f"
c1 c2 c3
1 2 3
in txt file it should be... (4 Replies)
Discussion started by: angel12345
4 Replies
LEARN ABOUT LINUX
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)