10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I want to insert a value (x) in the 3rd position of each line in a file like below
a|b|c|d|1
a|b|c|d
a|b|c|d|e|1
a|b|cso that output file looks like
a|b|x|c|d|1
a|b|x|c|d
a|b|x|c|d|e|1
a|b|x|cI can do that using perl as below
#!/usr/bin/perl -w
use strict;
#inserting x at... (5 Replies)
Discussion started by: sam05121988
5 Replies
2. Shell Programming and Scripting
cat file |grep -v "xx" | grep -v "yy" |grep -v "zz" (3 Replies)
Discussion started by: yanglei_fage
3 Replies
3. Shell Programming and Scripting
hi,
I am trying to replace comma with pipe, but the issue is that i want to ignore the commas inside qoutes.
for example:
i have file with the string: 1,"2,3",4,"5","6,7"
the result should be : 1|"2,3"|4|"5"|"6,7"
i trying to use sed and awk (match function) for that, but i did not... (4 Replies)
Discussion started by: gabik
4 Replies
4. Shell Programming and Scripting
Hi Friends,
I am using a command that prints certain lines from a file.
For ex:
cat input
abc chr1 456
def chr1 789
ghi chr1 999
jjj chr1 777
jhk chr7 914
My command
awk '{if($2=="chr1" && $3>=456 && $3<=999) {print $0}}' OFS="\t" input
Output being printed is
abc chr1 456 (7 Replies)
Discussion started by: jacobs.smith
7 Replies
5. UNIX Desktop Questions & Answers
Hi,
I am trying to convert multiple Unix pipe symbol or bar into single |. I have tried with the following sed statements, but, no success :(. I need it using sed only
echo "sed 's/\|\+/\|/g'
sed 's/*/\|/'
sed 's/\|*/|/'
sed -r 's/\|+/\|/'
However, the below awk code is working fine.... (4 Replies)
Discussion started by: royalibrahim
4 Replies
6. Shell Programming and Scripting
Hi,
Need help with a sed command that I am using to substitute 3 positions of a pipe delimited file.
i am getting different results while substituting the same position of two different files with the same value. Please see details below:
$ cat chk2
... (3 Replies)
Discussion started by: vmenon
3 Replies
7. UNIX for Dummies Questions & Answers
Hi
I am having a 'grep' headache
Here is the contents of my file:
(PBZ,CP,(((ME,PBZ,BtM),ON),((ME,((PBZ,DG),(CW9,PG11))),CW9,TS2,RT1)))
I would like to count out how many times 'PBZ' occurs and then place that number in the line above
3... (8 Replies)
Discussion started by: cavanac2
8 Replies
8. Shell Programming and Scripting
Is there a way I can do this:
search for text and replace line containing matched text with a different line?
For example:
"I want to replace text"
I want to search for replace and then change the line to
I am perplexed.
Hope that makes sense.
Thanks in advance. (4 Replies)
Discussion started by: arsh
4 Replies
9. Shell Programming and Scripting
This may just be a lack of experience talking, but I always assumed that when possible it was better to use a commands built in abilities rather than to pipe to a bunch of commands. I wrote a (very simple) script a while back that was meant to pull out a certain error code, and report back what... (4 Replies)
Discussion started by: DeCoTwc
4 Replies
10. Shell Programming and Scripting
Basically I am trying to write a short script to report total space used on /u0? file systems. This is what I was trying to do:df -k /u0? | grep -v kbytes | awk '{ printf $2 "+" }' | sed s/.$// | bcBut it returns no output.
This works however: > A=`df -k /u0? |grep -v kbytes | awk '{ printf $2... (2 Replies)
Discussion started by: 98_1LE
2 Replies
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)