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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1answer
10 views

How do I get an acceptable last modified timestamp for my Jekyll site using a shell script?

I would like to be able to provide last modified timestamps to my Jekyll posts and pages using a shell script. The problem is that I do not know how to automatically generate an acceptable timestamp. ...
0
votes
1answer
40 views

add 10 days for UNIX timestamps output

I've file contain many of epoch / UNIX timestamps need to add for example +10 days for output date so then I will get new date and I've create bash script with date command but seems doesn't work ...
8
votes
4answers
11k 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: ...
4
votes
1answer
272 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 ...
1
vote
1answer
17 views

What does when the file's status was last changed mean?

I'm reading about find and for one of the tests (-cnewer file) it reads: File's status was last changed more recently than file was modified. What is the file's status? It's obviously a date, ...
0
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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
1
vote
1answer
47 views

ls -lu does not give last access time

The manpage of ls says: -u with -lt: sort by, and show, access time; with -l: show access time and sort by name; otherwise: sort by access time but that doesn't seem to work: ...
1
vote
2answers
88 views

Full file date (without GNU utilities)

I am trying to obtain the full date (created or modified) of a particular file for passing to another program. I have tried variations of options with the ls command but none provide a full date for ...
27
votes
7answers
142k 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. ...
2
votes
1answer
39 views

How do I show UTC time in the i3status bar?

In my ~/.i3status.conf I have order += "tztime local" order += "tztime utc" #... tztime local { format = "%Y-%-m-%d %I:%M:%S" } tztime utc { format = "%H:%M:%S" } but my status bar shows ...
1
vote
1answer
30 views

How can I determine last access of a symbolic link without updating it?

Over time, a once tidy directory structure is changed and extended in unanticipated ways on a needs bases. After enough years go by it becomes 'a mess'. Of course, I had nothing to do with it. :-) ...
47
votes
2answers
16k 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 ...
1
vote
1answer
39 views

Find oldest directory name on a remote server?

I'm writing a backup script of sorts. My backup server contains 3 directories (named by date in the MM-DD-YYYY format) For example: 12-22-2015 12-28-2015 12-29-2015 Im writing my backup script ...
53
votes
7answers
97k views

How to find creation date of file?

I want to find out the creation date of particular file, not modification date or access date. I have tried with ls -ltrh and stat filename.
2
votes
1answer
29 views

Change a file's access-, change- and modify-dates to same past date

For a utility I'm developing it would be expedient if I could set all three the named dates associated with the files in some directory to some date in the past. I know I can use touch to set the ...
4
votes
1answer
169 views

Copy file creation date to metadata in ffmpeg

I would like to copy the file creation date of an mp4 file into the file's metadata. I'm pretty sure this can be done with ffmpeg and some nifty Linux commands.
3
votes
1answer
313 views

I want to list all the files in my Linux server which are older than Dec 31, 2014

I want to list all the Linux files in a directory and sub directories which are older than 31 Dec 2014. Please help me out for this.
1
vote
2answers
56 views

Merging log files with different timestamp formats

I have two types of log files Standard Syslog format The timestamp looks as below 5:2015 Dec 21 07:35:06:ABC:foo1:1559: common.c:946:Enabling filter 6:2015 Dec 21 07:35:08:ABC:bar1:1461: ...
-1
votes
1answer
32 views

Listing of files between two timestamp

I want to list down the files between two timestamp. But I can not use newer or newermt command as it doesn't support these tokens. Is there any other way to achieve this? Else I have to write too ...
1
vote
1answer
62 views

I am trying to fetch the logs for last five minutes through a script

I have a output log file which will be continuously appended and I am planning to have a script (runs for every 5 min) to retrieve the last 5 min data from of the output log. Sample data from the ...
7
votes
2answers
10k views

How to find difference between two timestamps up to milliseconds?

I am new to shell scripting. The heart of my script is to find the difference between two timestamps up to milliseconds. With me I have a file with content of timestamps only as 2012-09-13 ...
1
vote
1answer
28 views

date: Getting next certain hour

I want to get a date-time string in the future, for example I always want to get the next time of 9:00 am. I know the string formats like "tomorrow" or "next day" to get a certain date-time string. ...
5
votes
1answer
59 views

what is a resolution of jiffie in Linux Kernel

What is a resolution of jiffie in Linux Kernel? according to current timer source (cat /sys/devices/system/clocksource/clocksource0/current_clocksource), Linux uses TSC and has nanosecond resolution ...
0
votes
1answer
38 views

Is ctime on linux always greater or equal as mtime?

I'm trying to clear out how the timestamps of a file on linux work. In this answer is stated: Modify - the last time the file was modified (content has been modified) Change - the last time ...
0
votes
0answers
61 views

Bash prompt time is not always updating

Before I start, this is not a question about how to customize PS1. I have already customized mine and I'm quite happy with it. I usually work in a remote server with SuperPuTTY, which allows me to ...
5
votes
1answer
750 views

Can you change timestamp format for history command on tcsh

When I run history command (on tcsh), it only prints the TIME portion of the timestamp and omits the date: 3 15:07 echo $PATH 4 15:07 ls -la In bash, you can use HISTTIMEFORMAT ...
7
votes
3answers
23k 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
150 views

Delete all but the most recent n file for each group of files that share the same prefix in a directory

My question is a bit different from some older questions simply asking for "deleting all but the most recent n files in a directory". I have a directory that contains different 'groups' of files ...
5
votes
3answers
2k views

Append human readable timestamp of last edit to filename

I would like to add the time of the last change to the file to its filename using the bash. For example this output of ls -la: -rw-rw-r-- 1 beginner beginner 5382 Dec 1 17:18 B_F1-1.xml should ...
3
votes
3answers
436 views

Delete all files in a folder except the last (most recent) 20 [duplicate]

I want to remove all the files from different directories, and want to keep only latest files 20 files. is this the correct command to do this? ls -t1 /mnt/dwh/ftp/dwh_ftp_cbs/ARLOGS/ | tail -n +22 | ...
11
votes
5answers
679 views

Test if File was Modified After Date in File Name

I have a files named with YYYYMMDD in the file name, such as file-name-20151002.txt I want to determine if this file was modified after 2015-10-02. Notes: I can do this by looking at the output ...
0
votes
1answer
556 views

How to clear log files periodically?

I am new to shell scripting. I want to clear log files in a directory based on the dates. I have managed to gather this code: DIR1='/home/u01/app/oracle/servers/DIR1/logs' ...
5
votes
3answers
331 views

Unix epoch in milliseconds

I'm prepending the Unix epoch with "nanosecond" precision into output of my command as below: $ command | while read line; do d=`date +%s%N`; echo $d $line; done > file I looked around to find ...
7
votes
8answers
4k views

Bash, remove oldest files

I`m trying to delete old files from directory and leave only 3 newest files. cd /home/user1/test while [ `ls -lAR | grep ^- | wc -l` < 3 ] ; do rm `ls -t1 /home/user/test | tail -1` ...
1
vote
2answers
335 views

finding latest date and date modified file and using sed

I have a series of files that contain a date and I need to get the file which has the latest date, and the latest date modification and pipe it to sed. I have tried various approaches and I cannot ...
0
votes
1answer
48 views

how to get crtime of a file in an ext4 partition as a single number or string

I am seeking a method of getting the crtime of a file in hexadecimal or decimal in unix epoch seconds instead of in a date and clock format and with no additional output. This command adds additional ...
2
votes
1answer
68 views

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

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 do is ...
5
votes
1answer
193 views

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

I am learning about atime, ctime, mtime with regard 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 inode or ...
2
votes
1answer
44 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 want to update the timestamps by syncing the timestamps on the server. It would be time-consuming if the files themselves are ...
3
votes
3answers
4k views

How can I restore file timestamps of video recordings using the embedded metadata?

I'm looking for a command that will read the metadata of a ‘*.mp4’ file and touch the file's timestamp with the creation time of the video. The command should be read-only with respect to the file ...
1
vote
0answers
27 views

Getting file crtime under ext4 file system [duplicate]

I'm trying to display a file is creation time. I've been searching and I found out that under ext4 file systems this is something indeed possible to get and it's stored as crtime. As you can see in ...
0
votes
2answers
25 views

Create a file with a list of randomized/serialized numbers

I know that I can use the seq command to generate a sequence of numbers, such as: seq 100 999 ...and I know I can create a file with the addition of: seq 100 999 > file.txt ...but what if I ...
2
votes
2answers
11k views

copy files modified after specific date using cp switches

When I execute the command find . -mtime -60 I get the list of files modified within the last 60 days. So when I execute find . -mtime -60 -exec cp {} /tmp/1 \; I can copy these files to a new ...
4
votes
1answer
64 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. ...
7
votes
2answers
39k 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
53 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
81 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: ...
22
votes
5answers
19k 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?
4
votes
4answers
621 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 ...
1
vote
1answer
123 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 ...