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Full Discussion: [sed] Replace one line with two lines
Top Forums Shell Programming and Scripting [sed] Replace one line with two lines Post 302814483 by Don Cragun on Wednesday 29th of May 2013 01:47:07 PM
Old 05-29-2013
Quote:
Originally Posted by Parallax
So if I wanted to replace the occurrences recursively, is that impossible? Was wrong in thinking find and sed could do this?
I don't understand what you're trying to do. Applying your changes to a file recursively would change the following line in a file:
Code:
#       ./x.mak

to:
Code:
#       chmod 755 x.mak
chmod 755 x.mak
chmod 755 x.mak
...
./x.mak

with the "..." replaced by enough copies of "chmod 755 x.mak" to fill up your file system or exceed a file size limit for the file you're modifying.

Find and sed or the shell can modify a file in an infinite number of ways; but the code you showed us doesn't actually make any changes to any file; it just displays modified versions of a potentially huge number of file without saving modifications to any of them.

Please tell us in English exactly what you're trying to do with sample input and desired output. Showing us code that isn't doing what you want to do and making us guess at what you do want to do is not likely to produce working code.

If you're trying something and it is printing an error message, SHOW US THE EXACT ERROR MESSAGE(S).

Tell us what system you're using and what shell you use. Different Linux and UNIX operating systems provide different utilities and different options for common utilities. The shell you use (if we aren't allowed to choose the shell) may greatly limit the choices we have to provide working code.
 

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LEARN ABOUT MOJAVE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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