Sponsored Content
Top Forums UNIX for Advanced & Expert Users Why updating atime doesn't update ctime? Post 302579211 by botao on Monday 5th of December 2011 06:35:31 AM
Old 12-05-2011
you are semantically right, but ...

1) what you just said about 'atime/read' would also apply to 'mtime/write' ;

2) if you consider "inode"-change meaning "owner/group/mode"-change, then the results shall match the text better, don't you think ?

and please (for the sake of goodness) consider that the 'original' description you mentioned was written about 3 decades ago, and was not 'revised' ever since ;

hth

good luck, and success.
alexandre botao

Moderator's Comments:
Mod Comment Please refrain from posting your website as advertisement in your footer - you got 2 expired infractions for this already... Check your PMs.

Last edited by zaxxon; 12-05-2011 at 07:52 AM.. Reason: removing url of OPs website
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

atime, ctime, mtime somewhere along csize..

i have used all forms of the unix find command.. and right now this is the only command i can think of that might have this option..: if i use mtime i am looking at a time interval.. but if i wanted to find out intervals of access, change and modification according to when a file changed size... (4 Replies)
Discussion started by: moxxx68
4 Replies

2. Tips and Tutorials

mtime, ctime, and atime

Unix keeps 3 timestamps for each file: mtime, ctime, and atime. Most people seem to understand atime (access time), it is when the file was last read. There does seem to be some confusion between mtime and ctime though. ctime is the inode change time while mtime is the file modification time. ... (2 Replies)
Discussion started by: Perderabo
2 Replies

3. Shell Programming and Scripting

awk updating one file with another, comparing, updating

Hello, I read and search through this wonderful forum and tried different approaches but it seems I lack some knowledge and neurones ^^ Here is what I'm trying to achieve : file1: test filea 3495; test fileb 4578; test filec 7689; test filey 9978; test filez 12300; file2: test filea... (11 Replies)
Discussion started by: mecano
11 Replies

4. Shell Programming and Scripting

how to find ot ctime , mtime ,atime

Can any one tell me how to find out ctime , mtime ,atime for a file/directory on unix. Cheers, Nilesh (5 Replies)
Discussion started by: nilesrex
5 Replies

5. UNIX for Advanced & Expert Users

mtime VS atime VS ctime

hi, in trying to maintain your directories, one needs to do some housekeeping like removing old files. the tool "find" comes in handy. but how would you decide which option to use when it comes to, say, deleting files that are older than 5 days? mtime - last modified atime - last accessed... (4 Replies)
Discussion started by: pinoy43v3r
4 Replies

6. Shell Programming and Scripting

Makefile doesn't update $< variable

Hello guys, I could use advise from more experienced guys about my Makefile. In short, the problem with my Makefile is that $< doesnt change inside my rule. Here is my Makefile: # Makefile for CORE CC = gcc.exe AS = as.exe AR = ar.exe INCLUDE = \ -I../lib/tomcrypt/inc \... (1 Reply)
Discussion started by: Kodreanu
1 Replies

7. UNIX for Dummies Questions & Answers

-atime not working as expected

I need to sort through a volume that contains video files by access time and delete files that have not been accessed over x days. I have to use the access time as video files are originals that do not get modified, just read Testing commands on a local test folder... $ date Wed Sep 28... (10 Replies)
Discussion started by: canon273
10 Replies

8. AIX

AIX 6.1 TL8 update : bos.aso doesn't install.

Hello. An update of TL from TL7 to TL8 is ending with errors : Requisite Failures ------------------ SELECTED FILESETS: The following is a list of filesets that you asked to install. They cannot be installed until all of their requisite filesets are also installed. See subsequent... (4 Replies)
Discussion started by: stephnane
4 Replies

9. Solaris

Zfs - what does atime update?

It is widely documented that on zfs atime updates the access time on zfs. Where is the access time updated on Solaris 11.2? If I create file atimetest.txt under rpool/export/home: # zfs list rpool/export/home NAME USED AVAIL REFER MOUNTPOINT rpool/export/home 13.3G ... (5 Replies)
Discussion started by: jabberwocky
5 Replies
TMPWATCH(8)						   System Administrator's Manual					       TMPWATCH(8)

NAME
tmpwatch - removes files which haven't been accessed for a period of time SYNOPSIS
tmpwatch [-u|-m|-c] [-faqstv] [--verbose] [--force] [--all] [--test] [--fuser ] [--atime|--mtime|--ctime] [--quiet] <hours> <dirs> DESCRIPTION
tmpwatch recursively removes files which haven't been accessed for a given number of hours. Normally, it's used to clean up directories which are used for temporary holding space such as /tmp. When changing directories, tmpwatch is very sensitive to possible race conditions and will exit with an error if one is detected. It does not follow symbolic links in the directories it's cleaning (even if a symbolic link is given as its argument), will not switch filesystems, and only removes empty directories and regular files. By default, tmpwatch dates files by their atime (access time), not their mtime (modification time). If files aren't being removed when ls -l implies they should be, use ls -u to examine their atime to see if that explains the problem. If the --atime, --ctime or --mtime options are used in combination, the decision about deleting a file will be based on the maximum of this times. The hours parameter defines the threshold for removing files. If the file has not been accessed for hours hours, the file is removed. Fol- lowing this, one or more directories may be given for tmpwatch to clean up. OPTIONS
-u, --atime Make the decision about deleting a file based on the file's atime (access time). This is the default. -m, --mtime Make the decision about deleting a file based on the file's mtime (modification time) instead of the atime. -c, --ctime Make the decision about deleting a file based on the file's ctime (inode change time) instead of the atime; for directories, make the decision based on the mtime. -a, --all Remove all file types, not just regular files and directories. -d, --nodirs Do not attempt to remove directories, even if they are empty. -f, --force Remove files even if root doesn't have write access (akin to rm -f). -t, --test Doesn't remove files, but goes through the motions of removing them. This implies -v. -s, --fuser Attempt to use the "fuser" command to see if a file is already open before removing it. Not enabled by default. Does help in some circumstances, but not all. Dependent on fuser being installed in /sbin. -v, --verbose Print a verbose display. Two levels of verboseness are available -- use this option twice to get the most verbose output. SEE ALSO
cron(1), ls(1), rm(1), fuser(1) WARNINGS
GNU-style long options are not supported on HP-UX. AUTHORS
Erik Troan <ewt@redhat.com> Preston Brown <pbrown@redhat.com> Nalin Dahyabhai <nalin@redhat.com> 4th Berkeley Distribution Wed Nov 28 2001 TMPWATCH(8)
All times are GMT -4. The time now is 09:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy