sed for first instance of a pattern


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sed for first instance of a pattern
# 8  
Old 03-29-2013
As far as I know virtually every sed other than GNU sed..

Quote:
... The <right-brace> shall be preceded by a <newline> and can be preceded or followed by <blank> characters.
sed: editing commands

Quote:
Historically, the sed ! and } editing commands did not permit multiple commands on a single line using a <semicolon> as a command delimiter. Implementations are permitted, but not required, to support this extension.
sed: rationale

Last edited by Scrutinizer; 03-29-2013 at 09:37 AM..
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed -- Find pattern -- print remainder -- plus lines up to pattern -- Minus pattern

The intended result should be : PDF converters 'empty line' gpdftext and pdftotext?xml version="1.0"?> xml:space="preserve"><note-content version="0.1" xmlns:/tomboy/link" xmlns:size="http://beatniksoftware.com/tomboy/size">PDF converters gpdftext and pdftotext</note-content>... (9 Replies)
Discussion started by: Klasform
9 Replies

2. Shell Programming and Scripting

sed to grab first instance of a range

Hi all, I'm new to the forum and also relatively new to sed and other such wonderfully epic tools. I'm attempting to grab a section of text between two words, but it seems to match all instances of the range instead of stopping at just the first. This occurs when I use: sed -n... (7 Replies)
Discussion started by: Lazarix
7 Replies

3. Shell Programming and Scripting

sed command to print first instance of pattern in range

The following text is in testFile.txt: one 5 two 10 three 15 four 20 five 25 six 10 seven 35 eight 10 nine 45 ten 50 I'd like to use sed to print the first occurance of search pattern /10/ in a given range. This command is to be run against large log files, so to optimize efficiency,... (9 Replies)
Discussion started by: uschaafm
9 Replies

4. Shell Programming and Scripting

Using sed can you specify the last instance of a character on a line?

I was told a way to do this with awk earlier today but is there a way with sed to specify the last instance of a character on a line? You will know what character you're looking for but there could be none or one hundred instances of it on a line say and you ONLY want to specify the last one for... (3 Replies)
Discussion started by: Bashingaway
3 Replies

5. Shell Programming and Scripting

sed: how to limit pattern search to first instance only

I need to reduce a file's size below 50MB by deleting chucks of text. The following sed does this. sed '/^begpattern/,/endpattern/d' myfile However, it's possible that the file size can get below 50MB by just deleting the first instance of the pattern. How do I code that into sed? Or can awk... (8 Replies)
Discussion started by: mariod1049
8 Replies

6. Shell Programming and Scripting

sed appending needed only after first instance

Hi, Here is my piece of code used with sed in shell script: sed -i '/<falsemodule-option>/ a\<LdapLogin>' myxmlfile The problem that i am facing with the above is that in 'myxml' file i have mulitple instances of <falsemodule-option> so when i execute the above sed command, it is appending... (10 Replies)
Discussion started by: sunrexstar
10 Replies

7. Shell Programming and Scripting

sed command - substitue first instance

hi i have one file where i want to substitute only first instance of swap with swap1 i want to replcae only first instance of swap in my script i know we can do this with awk. but i need to do this with sed only i tried follwoing code sed 's/swap/swap1' filename but here all... (15 Replies)
Discussion started by: d_swapneel14
15 Replies

8. Shell Programming and Scripting

Sed on first instance only

Hi, I've been trying to figure this one out and found a post about this on the forum here but the solution didn't seem to work for me. Basically what I have is a file that looks something like: stuff morestuff 0 otherthing 0 etc I want to substitute for the 0 but what I want to... (9 Replies)
Discussion started by: eltinator
9 Replies

9. UNIX for Dummies Questions & Answers

Find first instance of pattern

I am using grep to find header info in a file and print it to another file. The header info only shows up on line 3 and 4 so i really don't need to search the remainder of the file. the grep -m option doesn't work with my version of UNIX. Also I'm new to UNIX so could you please explain what... (4 Replies)
Discussion started by: NobluesFDT
4 Replies

10. Shell Programming and Scripting

sed replace 2nd instance

Hello, I want to replace 2nd instance of "foo" in a file use sed. Any suggestions? (2 Replies)
Discussion started by: katrvu
2 Replies
Login or Register to Ask a Question
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)