explication Post: 302158437

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Top Forums Shell Programming and Scripting explication Post 302158437 by Perderabo on Tuesday 15th of January 2008 09:51:57 AM

01-15-2008

Administrator Emeritus

If you really have some command named 'sed/^[]*$/ d' you will run that command without passing any arguments to it. You probably wanted to run the sed command passing an argument to it. You will need a space or tab between the word "sed" and the argument to do this. Then the sed command will see the rest of the line as a sed command and choke on it. The presence or absence of a space before the d does not help. The problem is that the empty braces are illegal.

You know, you could have simply tried it...

Code:

$ sed '/^[]*$/ d'  datafile
sed: 1: "/^[]*$/ d": unbalanced brackets ([])
$

Perderabo

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xmlstarlet

XMLSTARLET(1)                                                    xmlstarlet Manual                                                   XMLSTARLET(1)

NAME

       xmlstarlet - command line XML/XSLT toolkit

SYNOPSIS

       xmlstarlet [<options>] [<command>] [<cmd-options>]

INTRODUCTION

       XMLStarlet is a set of command line utilities (tools) which can be used to transform, query, validate, and edit XML documents and files us-
       ing simple set of shell commands in similar way it is done for plain text files using UNIX grep, sed, awk, diff, patch, join, etc commands.
       This  set of command line utilities can be used by those who deal with many XML documents on UNIX shell command prompt as well as for auto-
       mated XML processing with shell scripts.

OPTIONS

       --version
              Display the version of xmlstarlet.

       --help Display help.

COMMANDS

       Type: xmlstarlet <command> --help <ENTER> for command help

       Available commands include:

       ed (or edit)
              Edit/update XML document(s).

       sel (or select)
              Select data or query XML document(s) (XPATH, etc).

       tr (or transform)
              Transform XML documents(s) using XSLT.

       val (or validate)
              Validate XML document(s) (well-formed/DTD/XSD/RelaxNG).

       fo (or format)
              Format XML document(s).

       el (or elements)
              Display element structure of XML document.

       c14n (or canonic)
              XML canonicalization.

       ls (or list)
              List directory as XML.

       esc (or escape)
              Escape special XML characters.

       unesc (or unescape)
              Unescape special XML characters.

       pyx (or xmln)
              Convert XML into PYX format (based on ESIS - ISO 8879).

       p2x (or depyx)
              Convert PYX into XML.

REFERENCES

       XMLStarlet is a command line  toolkit  to  query/edit/check/transform  XML  documents  (for  more  information  see  http://xmlstar.source-
       forge.net/).

AUTHOR

       Mikhail Grushinskiy.

                                                                                                                                     XMLSTARLET(1)

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xmlstarlet