Contents
- 1 Does LS show creation or modification time?
- 2 How does Unix determine file modification time?
- 3 Which command can I use to modify the timestamp of a file?
- 4 What is the difference between change time and modification time of a file?
- 5 How to compare 2 file date time stamps in batch?
- 6 How to check file modification time in seconds?
Does LS show creation or modification time?
1 Answer. ls -lt does not show file creation time… because most Unix filesystems do not actually record the file creation time. For those that do, it’s not necessarily easy to get at it (with ext4 you can use the debugfs command (doc), but that’s not really germane to your question).
How does Unix determine file modification time?
You can use -mtime option. It returns list of file if the file was last accessed N*24 hours ago….
- -mtime +60 means you are looking for a file modified 60 days ago.
- -mtime -60 means less than 60 days.
- -mtime 60 If you skip + or – it means exactly 60 days.
Which command can I use to modify the timestamp of a file?
The touch command is a standard command used in UNIX/Linux operating system which is used to create, change and modify timestamps of a file.
Which of the following commands would you use to see when a file was last modified?
date command with -r option followed by the name of file will display the last modified date and time of the file. which is the last modified date and time of the given file. date command can also be used to determine the last modified date of a directory.
How do you check who modified a file last in Linux?
- use stat command (ex: stat , See this)
- Find the Modify time.
- Use last command to see the log in history (see this)
- Compare the log-in/log-out times with the file’s Modify timestamp.
What is the difference between change time and modification time of a file?
“Modify” is the timestamp of the last time the file’s content has been mofified. This is often called “mtime”. “Change” is the timestamp of the last time the file’s inode has been changed, like by changing permissions, ownership, file name, number of hard links. It’s often called “ctime”.
How to compare 2 file date time stamps in batch?
You’d have to parse the Date and time stamp from a Dir for each file, convert it to a number format that batch can handle, and then compare the timestamps. Doable, but much more involved using a batch file.
How to check file modification time in seconds?
AFAICT, macos doesn’t seem to even store sub-second time information in the file attributes on the HFS+ file system at least. On OSX and Linux, date -r seems to work well, I use date -r “$file” +%s to get the modification time in seconds since epoch like so:
How to compare last modification time with specfied time?
Mainly, you are working with timestamps, so instead of calling both datetime.datetime.today () and time.time () (which introduces a slight discrepancy), you could do your computations based on time.time () alone: Thanks for contributing an answer to Code Review Stack Exchange!
How to compare last modification date in Python?
I’m writing a function in Python that compares the modification time of a file in Linux (using os.stat) with a specific time and compare the dates. If the modification date is older than the date I specified, an event should happen.