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Full Discussion: Tough Substituion command
Top Forums UNIX for Advanced & Expert Users Tough Substituion command Post 302233474 by ggggdddd on Sunday 7th of September 2008 09:34:57 PM
Old 09-07-2008
Tough Substituion command

I have lines like:

Mg2.qns W=0.175u
Mg2.qpsb W=0.175u
Mg4.qns W=0.175u
Mg4.qpsb W=0.175u

Which I need to become:
Mg2.qns W=wmg2qns
Mg2.qpsb W=wmg2qpsb
Mg4.qns W=wmg4qns
Mg4.qpsb W=wmg4qpsb

To acheive this individually line by line I use a command like:
:g/Mg2\.qns/s/W=.*/W=wmg2qns/

However I wish to acheive this for all lines in one command

I can find all the lines containing the concerned words by using:

:g/Mg[24]\.q[np]s/s/??????????????????????

I do not know how to fill up the second part of the command represented by question marks. Any idea?
 

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fmt(1)							      General Commands Manual							    fmt(1)

NAME
fmt - format text SYNOPSIS
width] [file...] DESCRIPTION
The command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the width option. The default width is 72. concatenates the arguments. If none are given, formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. does not fill lines beginning with a period for compatibility with Nor does it fill lines starting with Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used). can also be used as an in-line text filter for the command: reformats the text between the cursor location and the end of the paragraph. Options recognizes the following options: Crown margin mode. Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such "formatted" text, from being unduly combined. Fill output lines to up to width columns. WARNINGS
The width option is acceptable for BSD compatibility, but it may go away in future releases. SEE ALSO
nroff(1), vi(1). fmt(1)
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