mkdir, cd, touch, ls. Home directory.
pwd. Parent and current directories.
Here, "file.txt" and "*.sas" are arguments, and "-l", "-f" and "-u" are options. Note that multiple options can usually be joined together, and that some options ("-u") can take additional arguments ("apj770").
the "~" stands for "your home directory"
create an empty file "zz.txt"
Here, the touch command creates an empty file if no such file already exists. If there is such a file, it changes the date on the file to current, this is useful if you, for example, are working with files in /scratch.
The parent directory (the one immediately above) is always referred to as "..", and the current directory is "."
Here, "-lrt" options specify that I wanted to list the contents in "full" format (l), and in reverse (r) order by time (t).
Fast, even under slow connections!
You know if you are in vi if you see a lot of ~'s on screen!
If under X-Window, you can actually use the mouse!!!
/text [ENTER] : search for "text"