Please explain this SED expression Post: 302508198

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

please explain this sed shell script to remove C++ comments.

#! /bin/sed -nf # Remove C and C++ comments, by Brian Hiles (brian_hiles@rocketmail.com) # Sped up (and bugfixed to some extent) by Paolo Bonzini (bonzini@gnu.org) # Works its way through the line, copying to hold space the text up to the # first special character (/, ", '). The original...

2. Shell Programming and Scripting

Explain SED code

Hi, Can anyone pls explain me the below SED code in detail. sed -e :a -e '$!N;s/\n//;ta' -e P -e D When this code is executed with a file(has 1lac records), it is taking very long time to process. So I wanted to modify this SED code with equivalant AWK code. Thanks, Sri

3. Shell Programming and Scripting

sed -e 's%/$%%' explain this command

mount -ps | tail -1 | awk '{print $1}' | sed -e 's%/$%%' can you please explain this command mainly sed -e 's%/$%%' this....

4. Shell Programming and Scripting

Explain following sed syntax please

Thanks to this forum I have managed to work out a solution to my problem and actually understand most of it, but one thing is confusing me and I am sure someone here can explain. I need to insert a piece of txt into a file. This txt is awk '{ sub(/$/,"\r"); print }' $JCL_WBB50103_EFTOUT >...

5. UNIX for Advanced & Expert Users

Please explain this sed one liner

Can anyone explain the below sed oneliner? sed -e ':a' -e '$q;N;11,$D;ba' It works same as tail command. I just want to know how it works. Thanks ---------- Post updated at 11:42 PM ---------- Previous update was at 11:37 PM ---------- Moderators, Can you please delete this thread?...

6. Shell Programming and Scripting

can you explain this sed code?

can anyone please explain this code? sed ':a;N;$!ba;s/]\n//g' file it replaces lines ending with "]" and concatenates with the next line so that line1] line2 becomes line1line2 i don't understand this part: :a;N;$!ba; I have noted that I can replace "a" with any letter: ...

7. UNIX for Dummies Questions & Answers

Can someone please explain sed -n '/^$/!{s/<[^>]*>//g;p;}' filename

I came across this sed expression, and it does exactly what I want. However I haven't got the faintest clue how it does it and thus do not feel capable of using it. Can someone please explain how this expression works? (I used it to remove html tags in a html file I was converting to text) ...

8. UNIX for Advanced & Expert Users

sed: -e expression #1, char 0: no previous regular expression

Hello All, I'm trying to extract the lines between two consecutive elements of an array from a file. My array looks like: problem_arr=(PRS111 PRS213 PRS234) j=0 while } ] do k=`expr $j + 1` sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt ---some operation goes...

9. Shell Programming and Scripting

Explain sed command

sed -e 's,*$,,' Can someone explain the options in this command?

10. Shell Programming and Scripting

I am learning regular expression in sed,Please help me understand the use curly bracket in sed,

I am learning SED and just following the shell scripting book, i have trouble understanding the grep and sed statement, Question : 1 __________ /opt/oracle/work/antony>cat teledir.txt jai sharma 25853670 chanchal singhvi 9831545629 anil aggarwal 9830263298 shyam saksena 23217847 lalit...

LEARN ABOUT CENTOS

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

       --top-margin=tm
	      Set top margin. Default is 36.

       --left-margin=lm
	      Set left margin. Default is 36.

       --right-margin=rm
	      Set right margin. Default is 36.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

please explain this sed shell script to remove C++ comments.

Discussion started by: Priyaranjan

2. Shell Programming and Scripting

Explain SED code

Discussion started by: srilaxmi

3. Shell Programming and Scripting

sed -e 's%/$%%' explain this command

Discussion started by: rsivasan

4. Shell Programming and Scripting

Explain following sed syntax please

Discussion started by: hukcjv