Hi,
Could you please explain me the below statement -- phrase wise.
sed -e :a -e '$q;N;'$cnt',$D;ba' abc.txt > xyz.txt
if suppose $cnt contains value: 10
it copies last 9 lines of abc.txt to xyz.txt
why it is copying last 9 rather than 10.
and also what is ba and $D over there in... (4 Replies)
Hello everyone,
I found this command line in a website:
perl -pi.bak -we's/\z/Your new line\n/ if $. == 2;' your_text_file.txt
With this command line you can insert a new line anywhere you want in a text without overwriting what's in it.
-p causes perl to assume a loop around your... (4 Replies)
Hi Friends,
I am trying to modify a script .The script contains this line:
sed -n -e 's_.*>\(.*\)<.*_\1_p' filename.xml
I am not great in sed command.I know, it is regular expression
to match a pattern string that starts with s_ and ends with 1_.I doesnot give the desired result.
Can... (4 Replies)
sed '$!N; /^\(.*\)\n\1$/!P; D'
i found this file which removes duplicates irrespective for sorted or unsorted file. keep first occurance and remove the further occurances.
can any1 explain how this is working..
i need to remove duplicates following file. duplicate criteria is not the... (3 Replies)
Hi All
I ran a script in Linux.
In the script i have lines like
&& echo "Failed: Missing ${CM_ENV_FILE} \n" && return 1
. ${CM_ENV_FILE}
Where CM_ENV_FILE = /data/ds/dpr_ebicm_uat//etl/cm3_0/entities/BBME/parameters/cm.env
But its taking this path... (1 Reply)
I am debugging a script and have stuck up at one code line
awk -F , '{if (match($3,001)) { print $2 } }' Master20120307090511.tmp
The Master20120307090511.tmp is
001,ARE , 001
002,ARE , 002
003,ARE , 003
006,ARE , 006
011,ARE , 011
012,ARE , 012
What happens is when i fire this ... (5 Replies)
Hi everyone,
I am wondering if someone could please break down and explain the following sort command for me:
ls ${DEST_LOCATION}/${FILES} | sort -rt -k 4,4n | head -1
I have tried working it out using 'man sort', but on AIX there is not a great explanation of this function. I know that... (9 Replies)
Hi Folks,
I am struggling to understand nawk command which was used by another developer.
Can you please explain what each character or string is doing here below:
if ; then (3 Replies)
Discussion started by: kirans.229
3 Replies
LEARN ABOUT DEBIAN
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)
09-15-2011
