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Full Discussion: How to edit a txt file ?
Top Forums Shell Programming and Scripting How to edit a txt file ? Post 302200853 by era on Friday 30th of May 2008 08:40:18 AM
Old 05-30-2008
You don't cat individual lines of data; cat expects a file name argument. But looping over individual lines is pretty pointless anyway, as both cut and tr can handle multi-line data. Simply replacing tabs with pipes and discarding the first three characters should suffice, right?

Code:
tr '\t' '|' <data.txt | cut -c3- >processed_data.txt

By the by, it's more elegant to run the command inside the if:

Code:
 if tr '\t' '|' <data.txt | cut -c3- >processed_data.txt; then
  echo Success
else
  echo Failure
fi

The printing of a message when the script is already done is not very useful as such; the user will see that the script has finished when the prompt returns, and the exit code will indicate the status. (Neither cut not tr can really fail, unless you have invalid syntax, so the only possible failure I see here is a disk or file system failure.)
 

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LEARN ABOUT LINUX

edit-patch

EDIT-PATCH(1)                                                 General Commands Manual                                                EDIT-PATCH(1)

NAME

       edit-patch, add-patch - tool for preparing patches for Debian source packages

SYNOPSIS

       edit-patch path/to/patch

       add-patch path/to/patch

DESCRIPTION

       edit-patch is a wrapper script around the Quilt, CDBS, and dpatch patch systems. It simplifies the process of preparing and editing patches
       to Debian source packages and allows the user to not have to be concerned with which patch system is in use.   Run  from  inside  the  root
       directory of the source package, edit-patch can be used to edit existing patches located in debian/patches.

       It can also be used to incorporate new patches.  If pointed at a patch not already present, it will copy the patch to debian/patches in the
       correct format for the patch system in use.  Next, the patch is applied and a subshell is opened in order to edit the patch.   Typing  exit
       or pressing Ctrl-d will close the subshell and launch an editor to record the debian/changelog entry.

       edit-patch  is  integrated  with  the  Bazaar  and Git version control systems.  The patch will be automatically added to the tree, and the
       debian/changelog entry will be used as the commit message.

       If no patch system is present, the patch is applied inline, and a copy is stored in debian/patches-applied.

       add-patch is the non-interactive version of edit-patch.  The patch will be incorporated but no editor or subshell will be spawned.

AUTHORS

       edit-patch was written by Daniel Holbach <daniel.holbach@canonical.com>,  Michael  Vogt  <michael.vogt@canonical.com>,  and  David  Futcher
       <bobbo@ubuntu.com>.

       This manual page was written by Andrew Starr-Bochicchio <a.starr.b@gmail.com>.

       Both are released under the terms of the GNU General Public License, version 3.

DEBIAN                                                           Debian Utilities                                                    EDIT-PATCH(1)
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