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Top Forums Shell Programming and Scripting Read file and replace a particular line if found Post 302807671 by adisky123 on Wednesday 15th of May 2013 06:26:28 AM
Old 05-15-2013
Read file and replace a particular line if found

Hi All
There is another challenge which stand in front of me. And want all to have the experience with that

I have a file in Unix say a.txt. What I was trying is to read the file line by line and matching the line to particular pattern, and if that pattern found I want to replace that line with that particular pattern.

I know there are several ways to do, but I want to do it in that way only due to some large process constraints

Regards
Adi
 

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line(1)                                                            User Commands                                                           line(1)

NAME
line - read one line SYNOPSIS
line DESCRIPTION
The line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal. EXIT STATUS
Exit status is: 0 Successful completion >0 End-of-file on input. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), read(2), attributes(5) SunOS 5.10 1 Feb 1995 line(1)
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