Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to compare the dates in shell script
Top Forums Shell Programming and Scripting How to compare the dates in shell script Post 302108428 by Perderabo on Monday 26th of February 2007 11:59:57 AM
Old 02-26-2007
Quote:
Originally Posted by vaji
Then with this i need to delete files from a directory if its exceeding the count 7.
Code:
ls -lt

is a long listing of directory contents sorted by mod time (and a "total" at the top)

Code:
ls -lt | awk 'NR>1'

gets rid of that header line

Code:
ls -lt | awk 'NR>1 {print $9}'

displays only the ninth field(filename)

Code:
ls -lt | awk 'NR>1 {if (substr($1,1,1) == "-" ) print $9}'

displays name if the first field (like -rw-rw-r--) starts with hyphen (indicates an ordinary file)

Code:
ls -lt | awk 'NR>1 {if (substr($1,1,1) == "-" && n++ > 6) print $9}'

prints a list of file names but omits the first 7 (first = most recent)

Code:
ls -lt | awk 'NR>1 {if (substr($1,1,1) == "-" && n++ > 6) print $9}' | xargs rm

does exactly what you want
Last edited by Yogesh Sawant; 02-14-2011 at 07:50 AM.. Reason: added code tags
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Compare two dates using Shell Programming

Hi all, a=2007-05-10 (YYYY-DD-MM Format) b=2007-06-10 These are the two given dates and I need to compare. (First It should split the dates into YYYY,dd,mm) The script should first compare years(2007 here).If both are same or if "a" is lesser than "b"(ie.suppose year in "a" is 2006),it... (4 Replies)
Discussion started by: dave_nithis
4 Replies

2. Shell Programming and Scripting

Difference of 2 dates in shell script

Hi., After retrieving values from DB I have two datestamps in format: 12/01/2010:05:40:00 AM and 12/01/2010:06:00:00 PM. general time format: MM/DD/YYYY:HH:MM:SS AM or PM Any quick solution to get the difference of two in the format : 1 day(s) 12:20:00 Thanks., (6 Replies)
Discussion started by: IND123
6 Replies

3. Shell Programming and Scripting

compare dates using shell sript

I have 2 date feilds 2011-05-13:18:45 2011-05-13:18:30 I need to compare them and say its OK/NOK I tried this but dint work. systime=2011-05-13:18:45 shubtime=2011-05-13:18:30 if then echo" OK" else echo "NOK" fi In this its not same so the o/p should be NOK (2 Replies)
Discussion started by: LavanyaP
2 Replies

4. Shell Programming and Scripting

Compare Dates.

Hi All, I am entering StartDate and EndDate as parameters to script. Want to have an check saying, "If StartDate is greater than EndDate then don't execute the script". Pseudo Code: if then Execute script else exit 0 fi Can you please help me on the same? Thanks and... (4 Replies)
Discussion started by: Nagaraja Akkiva
4 Replies

5. Shell Programming and Scripting

append dates going forward from today to certain line in shell script

Hi there, I have a requirement to append dates going forward to a certain line in a file. I'm not sure of how to go about this. Any help will be greatly appreciated. Thanks Slyesco:wall: (2 Replies)
Discussion started by: Slyesco
2 Replies

6. Shell Programming and Scripting

Shell script to calculate difference between 2 dates

shell script to calculate difference between 2 dates (3 Replies)
Discussion started by: gredpurushottam
3 Replies

7. Shell Programming and Scripting

Need Help:Shell Script for Solaris to change the dates in a file by one week

I have to increase the date by one week in an input when script is executed in solaris. I was able to acheive this using ksh script that is working in Linux enivironment, when i execute the same script in Solaris i am getting below error: /var/tmp\n\r-> ./script.ksh date: illegal option -- d... (3 Replies)
Discussion started by: sriramanaramoju
3 Replies

8. Shell Programming and Scripting

Shell script to work on dates

Hi Sir/Madam I have a file data.txt like below file_name date_of_creation x 2/10/2012 y 8/11/2010 z 11/3/2013 a 2/10/2013 b 3/10/2013 c ... (4 Replies)
Discussion started by: kumar85shiv
4 Replies

9. Shell Programming and Scripting

Comparing dates in shell script

Hi All, I have a date variable say dt="2014-01-06 07:18:38" Now i need to use this variable to search a log and get the entries which occured after that time. (1 Reply)
Discussion started by: Girish19
1 Replies

10. Shell Programming and Scripting

Shell Script to Loop through Quarter dates

Hi, Trying to automate a Postgres query using Shell script Every month 1st week has to run a Monthly Queries to generate delimited files. July 1st start of fiscal yr which has 4 Quarters until next June 30th Example If I'm running on Sept 5th it has to generate one file(Becuase it... (12 Replies)
Discussion started by: krux_rap
12 Replies

LEARN ABOUT MOJAVE

locale::codes::langvar

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

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, 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 variations. 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:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_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 v5.18.2							    2014-01-06					       Locale::Codes::LangVar(3pm)
All times are GMT -4. The time now is 12:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy