Note that <code>ctime</code>is NOT the Creation Time, but the Change Time. The Creation Time is really called the Birth Time.
Not all filesystems store the birth time. POSIX only mandates to store <code>ctime</code>, <code>mtime</code> and <code>atime</code>. Some filesystems do store the <code>btime</code>, see a comparison of filesystem metadata <a target="_blank" href="https://en.wikipedia.org/wiki/Comparison_of_file_systems#Metadata">here</a>.
To view the different time entries, use stat(1):
<pre><code class="lang-bash">$ stat -f "Access (atime): %Sa%nModify (mtime): %Sm%nChange (ctime): %Sc%nBirth (Btime): %SB" GF\ Meeting\ KW01.md
Access (atime): Jan 6 14:41:14 2023
Modify (mtime): Jan 4 18:00:00 2023
Change (ctime): Jan 6 14:41:13 2023
Birth (Btime): Jan 4 18:00:00 2023
</code></pre>
To change, use touch(1):
<pre><code class="lang-bash">$ touch -t 202301041800 file.txt
</code></pre>
This will change the birth time, iff the time given is before the current birth time.
See discussion on SO <a target="_blank" href="https://stackoverflow.com/questions/34123076/osx-how-to-get-the-creation-modification-time-of-a-file-from-the-command-lin#34123230">here</a>.

Note that `ctime`is **NOT** the Creation Time, but the **Change Time**. The Creation Time is really called the *Birth Time*.

Not all filesystems store the birth time. POSIX only mandates to store `ctime`, `mtime` and `atime`. Some filesystems do store the `btime`, see a comparison of filesystem metadata [here](https://en.wikipedia.org/wiki/Comparison_of_file_systems#Metadata).

To view the different time entries, use *stat(1)*:

```bash
$ stat -f "Access (atime): %Sa%nModify (mtime): %Sm%nChange (ctime): %Sc%nBirth  (Btime): %SB" GF\ Meeting\ KW01.md
Access (atime): Jan  6 14:41:14 2023
Modify (mtime): Jan  4 18:00:00 2023
Change (ctime): Jan  6 14:41:13 2023
Birth  (Btime): Jan  4 18:00:00 2023
```

To change, use *touch(1)*:

```bash
$ touch -t 202301041800 file.txt
```

This will change the birth time, iff the time given is before the current birth time.

See discussion on SO [here](https://stackoverflow.com/questions/34123076/osx-how-to-get-the-creation-modification-time-of-a-file-from-the-command-lin#34123230).

How to change the UNIX Birth Time of a file