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Shell Programming and Scripting
Replacing strings in various files
Post 302772648 by balajesuri on Tuesday 26th of February 2013 10:12:05 AM
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I am trying to take the two line version of this:
mv myFile.txt myFile.txt.bak
sed 's/foo/bar/g' myFile.txt.bak > myFile.txt
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I have a input file which looks like this:
Value1=""
Value2=""
Value3=""
ListOfValues=" $Value1 $Value2 $Value3"
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I have a input file which looks like this:
Value1=""
Value2=""
Value3=""
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HI all,
These are examples of the original value from a variable
$abc can be
FastEthernet1/0
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5. UNIX for Dummies Questions & Answers
Hi guys,
say I have a few files in a directory (58 text files or somthing)
each one contains mulitple strings that I wish to replace with other strings
so in these 58 files I'm looking for say the following strings:
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The code below gives the string "test1.txt" even though "tessdsdt" does not match "test1.txt". I would like to return "" if there is no match and return some kind of error that I can capture and decide what to do.
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Well, to make another post at this helpful forum :b::D:
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Hallo Everyone.
I have to admit I'm shell scripting illiterate . I need to find certain strings in several text files and replace each of the string by unique & corresponding text.
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Hello All,
I have two files with delimited |
file 1 :
1|2|3
11|12|13
22|23|24
and file 2 :
1|4|5|6
11|14|15|16
22|25|26
I want to replace the value '1' in file 2 with the values in file 1 '1|2|3'
so the final output will look like
1|2|3|4|5|6
11|12|13|14|15|16
22|23|24|25|26 (3 Replies)
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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)