timestamp is used for questions that are about data specifying seconds since the epoch (19700101T00:00:00) or possible some other standard, and also for (date) and time information in filenames.

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3
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1answer
29 views

Using File Date/Time as Metadata: Reliable?

Background: I have groups of files in their own directory which I merge into one file in order of their filename. I call them t1.txt, t2.txt, t3.txt... I merge them in order of the integer. ...
5
votes
2answers
27k views

Cron job to delete files older than 3 days

I need to remove files older than 3 days with a cron job in 3 different directories. (these 3 directories are children of a parent directory /a/b/c/1 & /a/b/c/2 & /a/b/c/3) Can this be done ...
4
votes
1answer
37 views

Reason for change in ctime when the file content is modified

I understand that ctime changes when the file metadata or the file content is changed and mtime on file content modification. I would like to know the reason for updating ctime when the content of ...
1
vote
2answers
26 views

Why debugfs doesn't show crtime in nanoseconds?

I am using: debugfs -R 'stat <7473635>' /dev/sda7 to get the file creation time (crtime). Inode: 7473635 Type: regular Mode: 0664 Flags: 0x80000 Generation: 1874934325 Version: ...
18
votes
5answers
13k views

How to list files that were changed in a certain range of time?

How can I list recursively all files that were changed between 22.12.2011 and 24.12.2011?
5
votes
1answer
39 views

Why is mtime and ctime changing for a directory when a file is modified?

I am learning about atime, ctime, mtime with regards to files and directories. It seems to me that if I modify a file within a directory, I haven't changed the "directory file" itself in its idode or ...
4
votes
4answers
301 views

Sorting directories by last modified date/time of the same-named contained file

Is it possible, using grep, find, etc, to sort a list of directories by the last modified date of the same-named file (e.g., file.php) within? For example: domain1/file.php (last modified 20-Jan-2014 ...
2
votes
1answer
28 views

Is it feasible to update the modified times only without copying files when using rsync?

The modified times of a large amount of local files are incorrect. I wanna update the timestamps by syncing the timestamps on the server. It would be time-consuming if the files themselves are ...
0
votes
2answers
1k views

Correct timeline of a .ts file

I have some MVs that is recorded from a TV, but timeline was incorrect somehow: Anyone know some tool that can fix it ? The media plays fine, just the displayed stuff doesn't look good
2
votes
1answer
41 views

Running compilation scripts only if the source file is more recent than the compiled programe

all. I'm not sure if this question belongs here or some other site but I figured I would start here and some helpful moderator would kick me over if there is a better location. What I am trying to ...
1
vote
1answer
57 views

how to disable access time settings in Debian linux

Performance Best Practices for MongoDB implies that: Most file systems will maintain metadata for the last time a file was accessed. While this may be useful for some applications, in a ...
1
vote
1answer
35 views

How do I find directories where none of the files inside have been accessed in a year?

I have a tools directory /tools/tool_name that has hundreds of releases of the tool inside. I am trying to find an easy way of knowing what releases can be archived. Is there an easy way of finding ...
0
votes
0answers
29 views

not modified file increased size

weird thing happened. passwd file size increased although the timestamp hasn't... i've checked for rootkits and nothing found. Any reasons you can think of? Regards
2
votes
2answers
84 views

Sort files with a specific extension by modified time and store them into an array

I have found many answers to sort the files of directory and even to save them in an array. Sorting Example ls -t Directory listing in array array=(*) My particular problem needs to sort files ...
1
vote
3answers
68 views

epoch time for GMT

On AIX date -u gives date and time in GMT format date gives date and time in local timezone date +%s gives local time in epoch time Is there a way to get GMT time in epoch format? In the AIX I'm ...
7
votes
3answers
9k views

How do I change folder timestamps recursively to the newest file?

I was wondering if anyone knows how to change the timestamps of folders recursively based on the latest timestamp found of the files in that folder. So for example: ...
3
votes
2answers
87 views

Script for changing modification time of files and directories recursively

I have many big folders with thousands of files in them and I want to use touchto set their modification times to be "original time"+3 hours. I got this script from a similar thread in superuser: ...
0
votes
1answer
97 views

How to clear log files periodically

Hi I am new to Shell script. i want to clear log files in a directory basing on the dates. I have managed to gather this code: DIR1='/home/u01/app/oracle/servers/DIR1/logs' ...
0
votes
1answer
176 views

Unix date format validation script

I wrote this small unix shell script to validate the date format. My script should check whether the string is in YYYYMMDDHHMISS format . If it is not in this format , it should send an error message ...
0
votes
1answer
48 views

Wrong timestamp in systemd log

I read systemd log of my home server using journalctl and I've noticed that the timestamp of log is totally out of order. Here's some logs from my server using journalctl -o=short-iso ...
10
votes
3answers
614 views

How do I get the current time in a different time zone without changing system time? [duplicate]

I am trying to use 'date' to get the time in a different time zone, and failing. All the methods I've found on google involve changing the time zone on the system, but that is not what I want. Is ...
2
votes
1answer
764 views

Hardware Timestamping using PTP

I'm new to Linux programming. I have an Intel NIC with e1000e driver. I'm working on accurate time stamping of packets being captured from a network. My question is if I want to use RT Linux how ...
1
vote
1answer
121 views

get original creation date of html file

Can I find the creation/last modified date of an html file? For example, I would like to know when some index.html file from some website was created, not when I downloaded it.
1
vote
2answers
53 views

du: combine both timestamps

On Linux, du offers the displaying of timestamps: atime OR ctime OR mtime Question: Is there an easy way to get all three of them displayed at the same time (one file, all three timestamps)? I guess ...
0
votes
1answer
103 views

Remove files newer than X day and hour

I want to remove files, more specifically, symbolic links of /usr/include that are newer than 2 JUN 22:27 How can I do this?
6
votes
5answers
47k views

Display time stamp in dd/mm/yyyy_hh:mm:ss:ms in Unix or Linux

I need help to display date and time in desired format in Unix/ Linux. My desired format is: dd/mm/yyyy hh:mm:ss:ms in Unix or Linux. I got close using the following command: echo $(date +%x_%r) ...
1
vote
0answers
24 views

System accounting misbehaviour on MacOS X (Yosemite)?

On all my Unixes (CentOS, FreeBSD, MacOS X) I activate the system accounting as a basic security rule. On MacOS X (Yosemite, 10.10.3) I see a misbehaviour I am investigating to fix. Everytime I run ...
2
votes
1answer
82 views

Get all filenames in a directory created before input date

I have a directory containing lots of files. The output of ls command is -rw-r--r-- 1 nobody nogroup 427494 May 26 13:59 14_20150526065238928590_102.txt -rw-r--r-- 1 nobody nogroup 2113592 May ...
2
votes
2answers
4k views

Delete files older than X days +

I have found the command to delete files older than 5 days in a folder find /path/to/files* -mtime +5 -exec rm {} \; But how do I also do this for subdirectories in that folder?
4
votes
4answers
380 views

Move files by date into different directory using CLI

I have a large number of pictures from an old hard drive that I'm trying to organize. If I run ls -l, I notice all of these files have a creation date of 2012 or before. Ideally, I'd like to move ...
0
votes
1answer
62 views

set my system date & time via terminal

I don't why a + sign appears in the my program: <ns1:ST>2015-05-23T18:00:00+04:00</ns1:ST> <ns1:ET>2015-05-23T18:15:00+04:00</ns1:ET> this is when I run the program in my ...
5
votes
5answers
1k views

How to get system time with microsecond Resolution

I want to know current system time with microsecond Resolution. date +%s returns Time in seconds since epoch(1-1-1970). How can I get time in microseconds Resolution. How much delay is in querying ...
1
vote
3answers
60 views

How to change the format of a past timestamp

I've got an arbitrary time stamp 1427792481 I'm trying to implement +"%F" so I just get 2015-03-31 How can I do this? My ideal goal would be to get 20150331
15
votes
6answers
10k views

Correlating /var/log/* timestamps

/var/log/messages, /var/log/syslog, and some other log files use a timestamp which contains an absolute time, like Jan 13 14:13:10. /var/log/Xorg.0.log and /var/log/dmesg, as well as the output of $ ...
0
votes
1answer
94 views

PAM timestamp - how to inspecting the /var/run/sudo/<user> file?

The centos documentation stated that: ... In the PAM timestamp scheme, the graphical administrative application prompts the user for the root password when it is launched. When the user has ...
3
votes
1answer
411 views

Copy a file and append a timestamp

I've got two issues with my script that copies files and adds a timestamp to the name. cp -ra /home/bpacheco/Test1 /home/bpacheco/Test2-$(date +"%m-%d-%y-%T") The above adds Test2 as the filename, ...
3
votes
1answer
47 views

Timestamps of a directory?

About mtime of a directory, from St├ęphane Chazelas's reply http://unix.stackexchange.com/a/187231/674 The modification time of a directory, like any other file (note how directories are called ...
2
votes
2answers
37 views

Relation between timestamps of files

If I am correct: atime is the last time the file was read/accessed. mtime is the time when the file content last modified. ctime is the time when the inode of the file, was last changed. ...
18
votes
6answers
103k views

Why does find -mtime +1 only return files older than 2 days?

I'm struggling to wrap my mind around why the find interprets file modification times the way it does. Specifically, I don't understand why the -mtime +1 doesn't show files less than 48 hours old. ...
0
votes
1answer
71 views

How do I copy all files that have been created or modified in the last 12 months?

I would like to copy all the files created in the last 12 months to a new folder leaving behind everything else. Including sub folders.
40
votes
2answers
12k views

Prepending a timestamp to each line of output from a command

I wish to prepend a timestamp to each line of output from a command. For example: foo bar baz would become [2011-12-13 12:20:38] foo [2011-12-13 12:21:32] bar [2011-12-13 12:22:20] baz ...where ...
4
votes
1answer
126 views

Find the files between two folder dates in linux?

I need to find the folder names along with the file names which has my string in their contents. I am in this directory "/data/queue/data" and I have lot of folders in the same directory and inside ...
2
votes
0answers
46 views

Encoding a video from Unix Timestamps + ms

I have a sequence of images that were taken from a camera that have been saved in a naming convention that contains the unix timestamp as well as milliseconds. For instance, 1333351808430.jpg (I typed ...
19
votes
3answers
3k views

How does touch -t work internally?

How does touch -t command works exactly, internally (I tried to find its source code but couldn't)?
2
votes
3answers
61 views

Can system time be paused?

This may or may not be the right approach, but it's feasibility was requested of me: We have a demo server that we update from time to time in order to keep the statistical calculations up-to-date. ...
3
votes
1answer
231 views

How can I see a file's historical modification times? [duplicate]

stat outputs a file's last modification time. How can I see a list of all the times a file was modified? For example, I'd like to edit a file 5 times, and see 5 modification times.
1
vote
1answer
64 views

Match closest equal or preceding timestamp

I have a series of timestamps representing events, e.g.: 20150401_1120 // event a 20150401_1211 // event b And a series of logfiles, each representing a fixed period of time and timestamped ...
2
votes
4answers
3k views

Get the latest directory (not the latest file)

My folder parent has the following content: A.Folder B.Folder C.File It has both folders and files inside. B.Folder is newer. Now I just want to get B.Folder, how could I achieve this? I tried ...
3
votes
1answer
284 views

rsync's --link-dest option does not link because of file time

Consider this test case: mkdir a echo 'blah' > a/test mkdir b echo 'blah' > b/test rsync -r --link-dest=/tmp/b /tmp/a/ /tmp/c As expected, rsync creates c/test a hardlink of b/test (note the ...
11
votes
3answers
3k views

What file systems on Linux store the creation time?

Are there any (good known, reliable) file systems on Linux that store the creation time of files and directories in the i-node table? If there are, is the "changed" time replaced by the creation ...