Transfered from Linux Config Disqus comments:
In what directory will the command ‘cd …’ (note the two dots in this command) not do anything at all?
In root directory “/”.
Since the … directory points to a parent directory and / ( root directory ) is on the top of the file system hierarchy standard and therefore it does not have a parent directory, the “cd …” command will not do anything at all. We may also say that / directory is a parent directory of itself. Try:
$ cd / $ pwd / $ cd .. $ pwd /
Every directory in the linux file system contains two special directories and they are:
[li]"." a current working directory [/li][li]"…" a parent directory [/li][/ul]
To see these special directories enter command:
Current working directory “.” points to itself.
The command below will copy a file from /tmp directory to a current working directory:
cp /tmp/file .
Ore check disk space mounted below my current working directory:
df -h .
Parent directory “…” points to a directory one above my current working directory.
Use a symbolic path to navigate to different directory in the same parent directory:
$ pwd /tmp $ cd ../etc/ $ pwd /etc
Navigate two directories above my current directory:
$ pwd /etc/terminfo $ cd ../.. $ pwd /