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Full Discussion: search replace regex question
Homework and Emergencies Emergency UNIX and Linux Support search replace regex question Post 302580976 by arif.athar on Sunday 11th of December 2011 12:53:57 PM
Old 12-11-2011
In unix,to find a string in a file and replace it with another string, you can use the below procedure
"
Open the file with 'vi' editor.
The last line can be specified as a dollar sign ($). To search and replace from the current line through the last line use the command:

:.,$s/up/right/ <'up' is the term to be found and 'right' is the term to be replaced.>
 

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LEARN ABOUT LINUX

rnano

RNANO(1)						      General Commands Manual							  RNANO(1)

NAME

       rnano - Restricted mode for Nano's ANOther editor, an enhanced free Pico clone

SYNOPSIS

       rnano [OPTIONS] [[+LINE,COLUMN] FILE]...

DESCRIPTION

       This manual page briefly documents the rnano command.

       nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than
       just copying Pico's look and feel, nano also implements some missing (or disabled by  default)  features  in  Pico,  such  as  "search  and
       replace" and "go to line and column number".

       rnano  is  a  restricted  version of nano, which only edits specific files and doesn't allow the user access to the filesystem or a command
       shell.

       In restricted mode, nano will not:

       o read or write to any file not specified on the command line;

       o read any nanorc files;

       o allow suspending;

       o allow a file to be appended to, prepended to, or saved under a different name;

       o use backup files or spell checking.

OPTIONS

       +LINE,COLUMN
	      Places cursor at line number LINE and column number COLUMN (at least one of which must be specified)  on	startup,  instead  of  the
	      default of line 1, column 1.

       -?     Same as -h (--help).

       -h (--help)
	      Show a summary of command line options and exit.

       -V (--version)
	      Show the current version number and exit.

       See the nano(1) manpage for the complete documentation of nano.

BUGS

       Please send any comments or bug reports to nano@nano-editor.org.

       The nano mailing list is available from nano-devel@gnu.org.

       To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe".

HOMEPAGE

       http://www.nano-editor.org/

AUTHOR

       Chris  Allegretta  <chrisa@asty.org>,  et  al  (see  AUTHORS  for  details).   This  manual  page was originally written by Thijs Kinkhorst
       <thijs@kinkhorst.com>, for the Debian system (but may be used by others).

August 23, 2007 						   version 2.0.0							  RNANO(1)
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