20 December 2008

Official Unix Command List

Commands UNIX based
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(cd) % cd [dir]

The cd command changes your current working directory to the directory you specify.

DOS Equivalent: cd


(Ls) % Ls [dir]

The Ls command lists the files and subdirectories in the directory you specify. If not directory is specified,
a list of the files and subdirectories in the current working directory is displayed.

You can add some additional arguments to customize the list display.


% Ls -f

Will append a forward slash to the subdirectory names so you can easily distinguish them from
file names.


% Ls -a

Will show all "hidden files". Hidden files begin with a ".", i.e. ".htaccess" files.


% Ls -l

Will show detailed information about each file and directory, including permissions, ownership,
file size, and when the file was last modified.


% Ls -al

Will show a list of all file names (including hidden files and a forward slash will be appended to directory names.

DOS Equivalent: dir


(cat) % cat [file]

Displays the contents of the filename you specify. If you want to display the file one screen
at a time try "cat [file] | more" or simply "more [file]"

DOS Equivalent: type


(mkdir) % mkdir [dir]

The mkdir command makes a new directory with the name, directory, that you specify.
Simply type "mkdir [dir]" and hit return.

DOS Equivalent: md or mkdir


(rmdir) % rmdir [dir]

The rmdir command removes the directory that you specify. Simply type "rmdir [dir]" and hit
return.

DOS Equivalent: rd or rmdir


(cp) % cp [from] [to]

The MV command renames a file or moves it to a new location. Simply type "MV [from] [to]"
and hit return. You can specify pathnames as part of the file specification. If target-file
exists then it is overwritten.


(MV) % MV [from] [to]

The MV command renames a file or moves it to a new location. Simply type "MV [from] [to]"
and hit return. You can specify pathnames as part of the file specification. If target-file
exists then it is overwritten.

DOS Equivalent: rename


(rm) % rm [file] or rm -f [file]

The rm command deletes (removes) a file. Simply type "rm [file]" and hit return. You can
specify pathnames as part of the file specification.

DOS Equivalent: del


(grep) % grep [pattern] [files]

The grep command finds lines in files that match specified text patterns. Simply type
"grep [pattern] [files]" and hit return. You can specify pathnames as part of the file
specification. For example if you want to search for a patter "gif" in all html files in
your current working directory, you would type "grep gif *.html" and hit return. The grep
command would then list all occurrences of "gif" it finds in .html files in the current
working directory.


(tar) % tar [options] [tarfile] [files]

The tar command copies a file or files to or from an archive. To put all the files in a
directory into one tar format file, simply type "tar cvf tarfile directory" at a Telnet
command prompt and replace tarfile with the name you want to call your archived file, and
replace directory with the name of the directory that contains the files you want to tar.
To extract the files from a tar format archive, simply type "tar -xvf [tarfile]" at a Telnet
command prompt and replace tarfile with the name of the archived file you are extracting.

For example, you could type "tar cvf pages.tar htdocs" at a Telnet command prompt to
archive the files in the htdocs directory to a tar format file called pages.tar.

To view the contents of the pages.tar tarfile without extracting them, type "tar tvf pages.tar".
This will display all files that are included in the tar archive.

You could also type "tar xvf pages.tar" at a Telnet command prompt to extract into the
current directory the files in the archive pages.tar.


(zip) % zip [options] [zipfile] [files]

The zip command compresses a file or list of files into a zip format archive file. This
command is compatible with pkzip on a PC. Simply type "zip [zipfile] [file1] [file2] [file3]
"at a Telnet command prompt and replace zipfile with the name you want to use for your compressed
zip archive file, and replace fileX with the name of the file(s) you want to compress into the
zip archive.

DOS Equivalent: pkzip

NOT AVAILABLE FOR SOLARIS


(unzip) % unzip [options] [zipfile]

The unzip command extracts a zip format archive file. This command is compatible with
pkunzip files from a PC. Simply type "unzip zipfile" at a Telnet command prompt and replace
zipfile with the name of your zip format archive file.

DOS Equivalent: pkunzip

NOT AVAILABLE FOR SOLARIS


(compress) % compress [files]

The compress command shrinks a file or files into compressed versions to save space on your Virtual
Server. This command is good for you to use on your log files when they get very large.
Simply type "compress [filename(s)]" at a Telnet command prompt and replace filename(s)
with the name of your files you want to compress. For example, type "compress access_log agent_log"
at a Telnet command prompt to compress the access_log and agent_log files. The compressed
files will then be access_log.Z and agent_log.Z.


(uncompress) % uncompress [files]

The uncompress command expands a compressed file or set of compressed files. Simply type
"uncompress [file(s)]" and hit return.

IG's Official Unix Command List

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