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Full Discussion: Adding text to file on certain lines with(special characters)
Top Forums Shell Programming and Scripting Adding text to file on certain lines with(special characters) Post 302380508 by durden_tyler on Tuesday 15th of December 2009 11:11:57 AM
Old 12-15-2009
Your Perl program is incorrect syntax-wise. You may want to look up basic conditions and loop structures in the documentation or a good textbook.

Maybe this is what you are looking for -

Code:
$
$ cat -n f7
     1  this is line 1
     2  this is line 2
     3  this is line 3
     4  this is line 4
     5  this is line 5
     6  this is line 6
     7  this is line 7
     8  this is line 8
     9  this is line 9
    10  this is line 10
$
$
$ perl -lne 'BEGIN {$RM="BLAH"}
             if ($. == 3) {print qq(RM="rm2")}
             elsif ($. == 5) {print qq($RM)}
             elsif ($. == 7) {print qq(rmdesc="Result process")}
             else {print}' f7
this is line 1
this is line 2
RM="rm2"
this is line 4
BLAH
this is line 6
rmdesc="Result process"
this is line 8
this is line 9
this is line 10
$
$

tyler_durden
 

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LEARN ABOUT MOJAVE

line

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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