Delete older lines from file Post: 302894722

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1. UNIX for Advanced & Expert Users

Delete user file(s) older then 'X' days ??

I want to delete any file in unix file system which is older then a week. Those files should not be unix system file..means it should be user created file. Any clue to this ?? ASAP. Thanks.

2. Shell Programming and Scripting

delete file older than N days

Hi, All, I'd like to delete files older than 1 day. I thought the following command find /your_directory -mtime +1-exec rm -f {} \; will do the work, but not so, it seems like it won't delete files unless it is 2 days old or older. the files between 1 day and 2 days old does not...

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Delete files older than 3 months.(read date from the name of the file)

Guys, My log files stored in the date format format below(log_20080714072942): TIMESTAMP=`date +%Y%m%d%H%M%S` LOG=/log/log_${TIMESTAMP}.log I'm looking for a shell script which deletes all files which is older than 3 months from today. Regards, Bhagat

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In a huge file, Delete duplicate lines leaving unique lines

Hi All, I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space. I dont know if this works : I want to read each line of the File in a For Loop, and want to...

5. UNIX for Dummies Questions & Answers

Delete file older than three days

I am using SFTP to transmit files from the Mainframe to an UNIX server. I am looking for some kind of script that runs with SFTP to delete tranmitted files older than 3 days. Can this be done in a SFTP transmission batch job?

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Need Script to ZIP/SAVE & then DELETE Log file & DELETE ZIPS older than 12 months

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List and Delete Files which are older than 7 days, but have white spaces in file name

I need to list and delete all files in current older which are olderthan 7 days. But my file names have white spaces. Before deleting I want to list all the files, so that I can verify.find . -type f -mtime +7 | xargs ls -l {} But the ls command is the working on the files which have white...

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Search 2 days older file and then delete last 10 lines

I want to search 2 day older file and then delete last 10 line of that file.

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Delete files older than 1week(dates need to be calculate based on file name)

Objective: We have multiple files in a folder and we want to delete all files except for last 1 week files. Note: We are copying these files from original location to this temporary location. So time shown for these files are time when we copied to this location. Not that when file was created....

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Filtering log file with lines older than 10 days.

Hi, I am trying to compare epoch time in a huge log file (2 million lines) with todays date. I have to create two files one which has lines older than 10 days and another file with less than 10 days. I am using while do but it takes forever to complete the script. It would be helpful if you can...

LEARN ABOUT OSF1

qsort

qsort(3)						     Library Functions Manual							  qsort(3)

NAME

       qsort - Sorts a table in place

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <stdlib.h>

       void qsort(
	       void *base,
	       size_t nmemb,
	       size_t size,
	       int (*compar) (const void *, const void *));

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       qsort():  XPG4, XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Points  to  the	first entry in the table.  Specifies the number of entries in the table.  Specifies the size in bytes of each table entry.
       Points to the user-specified function to be used to compare pairs of table elements.  The comparison  function  will  be  called  with  two
       parameters  that  point	to the two elements to be compared. The comparison function must return an integer less than, equal to, or greater
       than zero, depending on whether the first element in the comparison is considered less than, equal to, or greater than the second element.

DESCRIPTION

       The qsort() function sorts a table having a specified number of entries. The contents of the table are sorted in ascending order  according
       to a user-specified comparison function (the strcmp() function, for example).

NOTES

       The  comparison	function  need	not compare every byte, so arbitrary data may be contained in the elements in addition to the values being
       compared.

       When two members compare equal, their order in the sorted array is indeterminate.

RELATED INFORMATION

       Functions: bsearch(3), lsearch(3)

       Standards: standards(5) delim off

																	  qsort(3)

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Delete user file(s) older then 'X' days ??

Discussion started by: varungupta

2. Shell Programming and Scripting

delete file older than N days

Discussion started by: ericaworld

3. Shell Programming and Scripting

Delete files older than 3 months.(read date from the name of the file)

Discussion started by: bhagat.singh-j

4. UNIX for Advanced & Expert Users

In a huge file, Delete duplicate lines leaving unique lines

Discussion started by: krishnix