file age

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting file age
# 1  
Old 08-22-2002
Question file age

How can I count the age of the file (e.g. in minutes)?
# 2  
Old 08-22-2002
It's not clear from your query what are you actually need.
If you simply want to find out was this file was modified (or created) in the
last 'n' minutes, you can use 'find' command:

find . -mmin 5 -name 'infile'
# 3  
Old 08-22-2002
I spent more time than I should have looking for a solution to this and didn't find one.

If you do `ls -l` in a directory, you get a list of "last modified" dates, so you could perform some math in a script to tell the number of minutes since the last time the file was modified.

But as far as I can tell, Unix simply does not keep track of the date a file was created.
# 4  
Old 08-22-2002
Unix does not track file creation least not so far as I know.
# 5  
Old 10-16-2008
epoch date solution to file age problem

As normal dating use minutes, hours, days - that are reset after they reach some low maximum values, and as different months may have different number of days, it may be tricky to implement time difference calculation using normal dating. Instead a solution using the total number of seconds since a fixed date is simple and straight-forward. The Unix epoch time starts at new years moment 1970 and counts the number of seconds since then. The age of a file in seconds is then
EpochTime(now) - EpochTime(file). The shell script below uses modification time from date +%s -r referring to a file:

#Present time in Epoch Time measured
nowEpTime=`date +%s`
#Modification time of file in Epoch Time units.
filemodifEpTime=`date +%s -r $fil`
#Age in seconds
#In minutes
echo $tdiff
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Age of file

Hi All.. Is there any easy way to find out how many days older is file? for ex. fileA 20 days fileB 10 days I am currently on AIX, and there is no STAT command available in this environment. What are my options? Thanks Abhijeet R (1 Reply)
Discussion started by: freakabhi
1 Replies

2. Shell Programming and Scripting

Check age of the file

hi, i am working on a shell script where i have 2 files & i need to check age of those files. one file should be of the same day and other shoudn't be more then 20 days old. how could i acheive this? please help!!!! (10 Replies)
Discussion started by: lovelysethii
10 Replies

3. Shell Programming and Scripting

Age of file in storage / disk

Hello all, Below is scripts to find the file following by: 30 days <- How many total file space within 30 days and not quantity 90 days 120 days 1 year From here also I can get data space to put on PIE Chart. Following this scripts can I do some enhance from this scripts like do... (1 Reply)
Discussion started by: sheikh76
1 Replies

4. Shell Programming and Scripting

Calculate age of a file | calculate time difference

Hello, I'm trying to create a shell script (#!/bin/sh) which should tell me the age of a file in minutes... I have a process, which delivers me all 15 minutes a new file and I want to have a monitoring script, which sends me an email, if the present file is older than 20 minutes. To do... (10 Replies)
Discussion started by: worm
10 Replies

5. Shell Programming and Scripting

Determine file age in days?

I am using AIX 6.1 and would like to use a one line command to determine the age of a file in days. I would like to look at a specific file. I would like to use the command to run on a remote server (AIX 6.1) to return the age of a specific file in days. So if the file is 42 days old I would... (2 Replies)
Discussion started by: oldman2
2 Replies

6. Shell Programming and Scripting

Perl Find file age

Hi I can not say that i am new to perl but today i learned something new, i wanted to know age (last time file got modified) of file so i initially thought of using find -mtime command but when i googled it, i found perl solution for the same my $age = -M $ARGV ; print "$ARGV age is... (1 Reply)
Discussion started by: zedex
1 Replies

7. Shell Programming and Scripting

Identify age of the file.

Hi all, I'm using SunOS. need to find age of the file in terms of seconds. The file name with its path will be given to the script as input. Any kinda help will be appreciated. Thanks in advance (7 Replies)
Discussion started by: bankimmehta
7 Replies

8. Shell Programming and Scripting

ksh - AIX: get epoch time/age for a file?

Hi, (AIX 5.1) Is there any way to find the epoch timestamp for a file without having to use fancy perl (or similar) scripts? If anyone knows of a way to do this using just ksh commands it would be appreciated. (It also appears I don't have the stat command available). Alternatively is... (3 Replies)
Discussion started by: b0bbins
3 Replies

9. Shell Programming and Scripting

Find the age of a file in Minutes

KSH: Please lt me know how to find the age of a file in minutes(Based on last modified time). ie, if the file was modified 15 Minutes ago, the output should be 15 (1 Reply)
Discussion started by: hari_anj
1 Replies

10. UNIX for Dummies Questions & Answers

How to find the File Age and wait for that...

Hi, I want to know my file is 1 hr 30 min old or not, If 1 hr 30 min old I will do some tasks in that file.. other wise I will wait to 1 hr 30 min and then do the tasks.. how to do it in Unix script? any idea? (3 Replies)
Discussion started by: redlotus72
3 Replies
Login or Register to Ask a Question