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Full Discussion: How to change name of the file with first line of the file which has some unwanted text in it?
Top Forums UNIX for Beginners Questions & Answers How to change name of the file with first line of the file which has some unwanted text in it? Post 303030072 by Sekhar419 on Tuesday 5th of February 2019 06:05:17 PM
Old 02-05-2019
How to change name of the file with first line of the file which has some unwanted text in it?
I have a log file, which i have divided into 14 files using csplit, the file looks like below

Code:
test-000000
test-000001 #and so on until 14

now I want all the 14 files generated to be renamed as the some part of test in first line of the file how can i eliminate the unwanted text?

sample first line of the file looks like, all the files have similar format

Code:
0-00:01:01.412 <main>:[UNIT]:[info]:  Test: SCHEDULE_REQUEST_TestCase ...

I want to rename the file as SCHEDULE_REQUEST_TestCase.log
I know that mv command can be used to rename the file, and read or head can be used to read the first line of the file, but i want to remove the text before SCHEDULE and dots after TestCase.

This is what i have at the moment

Code:
line="$(head -n 1 test-000000)"
mv test-000000 ${line}.log

I want to perform this for all the files i have generated i don't really get how to do that and eliminate the unwanted text from the first line? I guess sed or awk can be used to eliminate the text I have started shell scripting like five days ago any help would be greatly appreciated.
 

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LEARN ABOUT CENTOS

locale::codes::langext

Locale::Codes::LangExt(3)				User Contributed Perl Documentation				 Locale::Codes::LangExt(3)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2013-02-27						 Locale::Codes::LangExt(3)
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