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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6
votes
2answers
2k views

Why does Unix store timestamps in a signed integer?

Why is a signed integer used to represent timestamps? There is a clearly defined start at 1970 that's represented as 0, so why would we need numbers before that? Are negative timestamps used anywhere? ...
4
votes
1answer
544 views

Only use mtime comparison with rsync?

Is it possible to sync files via rsync and let rsync only compare mtime informations? Or is there another tool for this job? That means that such a tool only copies src to destination if the src is ...
45
votes
3answers
137k views

Get file created/creation time? [duplicate]

Possible Duplicate: How do I do a ls and then sort the results by date created? Is there a command in Linux which displays when the file was created ? I see that ls -l gives the last ...
3
votes
1answer
1k views

How to recursively synchronize file timestamps across servers?

Suppose I run an rsync command to mirror a server, but forget to supply the -t option. The mirror will now have different timestamps to the original. What is the easiest way to fix this, without ...
8
votes
6answers
9k views

Shell script for moving oldest files?

How do I write a script for moving just the 20 oldest files from one folder to another? Is there a way to grab the oldest files in a folder?
3
votes
1answer
469 views

Download only recently modified files with wget over FTP

When fetching recursively with wget from an FTP server, how can I download only files modified after a given date? The use case is that I need to sync with several servers nightly, but I only need ...
3
votes
2answers
488 views

On touching a new file why is mtime and ctime older than atime?

I have this: $ ls -l ff ls: cannot access ff: No such file or directory $ touch ff $ stat ff File: `ff' Size: 0 Blocks: 0 IO Block: 4096 regular empty file Device: ...
36
votes
2answers
33k views

How do I do a ls and then sort the results by date created?

In what order are the dated ordered by? Certainly not alphanumeric order. ls -lt sorts by modification time. But I need creation time.
4
votes
3answers
3k views

Delete files based on year

I need to delete all files in a directory that were created in 2009. What command can I use to do that?
6
votes
2answers
938 views

What can you do to a file without triggering the “Change” Timestamp?

What can you do to a file without triggering the "Change" stat? For instance, it appears that simply changing a bit will trigger Change.
4
votes
2answers
2k views

Determine file system timestamp accuracy

File timestamps accuracy is limited to one second for EXT3, one microsecond for UFS, and one nanosecond for EXT4 (at least according to experience). Is there any way to determine this based only on ...
11
votes
3answers
2k 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 ...
14
votes
6answers
8k 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 $ ...
7
votes
3answers
8k 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: ...