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Top Forums Shell Programming and Scripting [Solved] Printing a part of the last line of the specific part of a file Post 302695607 by wenclu on Monday 3rd of September 2012 08:55:58 AM
Old 09-03-2012
[Solved] Printing a part of the last line of the specific part of a file

Hi,

I have 80 large files, from which I want to get a specific value to run a Bash script. Firstly, I want to get the part of a file which contains this:

Code:
Name =A
xxxxxx
yyyyyy
zzzzzz
aaaaaa
bbbbbb
Value = 57

This is necessary because in a file there are written more lines which contains a string "Value =[...]"

Next, I want to get the value 57 and assign it to a variable (this is an example because each file has different value)

I tried to use this command:

Code:
VALUE=`sed -n '/Name = A/,/Value =/p' $file | tail -1 | gawk '{printf $3"\n"}'`

Unfortunately, this command runs very slow for 80 files.

I tried also to use this command:

Code:
VALUE=`sed -n '/Name = A/{n;n;n;n;n;n;s/\(.*\)= //;p;}'`

However, I'd rather not define the amount of lines which should be skipped because it is possible to insert a newline in that file and in this case the script won't work.

Can anyone help me with this?
Thanks
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 09-03-2012 at 10:05 AM.. Reason: code tags, please!
 

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Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME
Locale::Codes::LangFam - standard codes for language extension identification SYNOPSIS
use Locale::Codes::LangFam; $lext = code2langfam('apa'); # $lext gets 'Apache languages' $code = langfam2code('Apache languages'); # $code gets 'apa' @codes = all_langfam_codes(); @names = all_langfam_names(); DESCRIPTION
The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in ISO 639-5. Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5 language family codes will be used. SUPPORTED CODE SETS
There are several different code sets you can use for identifying language families. 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 = code2langfam('apa','alpha'); $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA); The codesets currently supported are: alpha This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages. This is the default code set. ROUTINES
code2langfam ( CODE [,CODESET] ) langfam2code ( NAME [,CODESET] ) langfam_code2code ( CODE ,CODESET ,CODESET2 ) all_langfam_codes ( [CODESET] ) all_langfam_names ( [CODESET] ) Locale::Codes::LangFam::rename_langfam ( CODE ,NEW_NAME [,CODESET] ) Locale::Codes::LangFam::add_langfam ( CODE ,NAME [,CODESET] ) Locale::Codes::LangFam::delete_langfam ( CODE [,CODESET] ) Locale::Codes::LangFam::add_langfam_alias ( NAME ,NEW_NAME ) Locale::Codes::LangFam::delete_langfam_alias ( NAME ) Locale::Codes::LangFam::rename_langfam_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangFam::add_langfam_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangFam::delete_langfam_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.loc.gov/standards/iso639-5/id.php ISO 639-5 . 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 v5.18.2 2013-11-04 Locale::Codes::LangFam(3pm)
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