Unix was created in 1969 by AT&T developers at Bell Labs. It is used on servers, workstations, and mobile devices. Unix provided the foundation for the development of Mac OS X. The document then provides examples of common Unix commands like cd to change directories, ls to list files, mkdir to create directories, top to view running processes, kill to stop processes, grep to find text in files, and find to locate files. It recommends using man pages or passing -h/–help flags to get help on how to use commands.

1. Unix
Nick
Radford

2. History of Unix
•Created
in
1969
by
a
group
of
AT&T
Developers
at
Bell
Labs.
•Used
mostly
on
servers,
workstations
and
mobile
devices.

3. Foundation of Mac OS X

4. Change Directory
Use it to change directories.
$
cd
<path>
Can use relative or absolute paths.
$
cd
/foo/bar
$
cd
../baz

5. List Current Directory
$
pwd

6. List Files in Current Directory
$
ls

7. List Files in Current Directory
Use ls
-­‐a to list all files in the current directory.

8. List Files in Current Directory
Use ls
-­‐o to list get more information about the files.

9. Make Directory
Use mkdir
to create a new directory.
$
mkdir
<path
to
directory>
$
mkdir
/foo/bat
Use -­‐p flag to create all directories in given path.
$
mkdir
-­‐p
/path/that/does/not/exist/yet

10. What’s currently running?
$
top

11. Stopping processes
$
kill
<pid>
$
killall
<name>

12. Find text in a file
$
grep
<pattern>
<file>

13. Find a file in the filesystem
$
find
<path>
<expression>

14. Not sure how to use something?
Pass the -­‐h or -­‐-­‐help flag to the program.

15. Not sure how to use something?
Use the man pages!
$
man
<program>

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Radford
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