Dd (Unix) (5941 bytes)
2: '''dd''' is a common [[Unix]] program whose primary purpose is the low-level ...
6: ...o be preserved in a byte-exact copy. Using [[cp (Unix)|cp]] would not be enough, since data from delete...
8: ...d line syntax of dd is unlike that of any other [[Unix]] program, resulting in widespread fear and loath...
9: ...ng is triggered by the blatant violation of the [[Unix philosophy]] of using a common syntax for all com...
114: [[Category:Unix programs]]

Df (Unix) (696 bytes)
1: {{wrongtitle|title=df (Unix)}}
3: ...' (abbreviated from '''d'''isk '''f'''ree) is a [[Unix]] [[computer program]] to display the amount of d...
7: ...ty may first have appeared in version 3 of [[AT&T UNIX]].
14: [[Category:Unix programs]]

Unix-like (3248 bytes)
1: ...pinion is possible as to whether a certain OS is "Unix-like" or not.
3: ==The term "Unix-like" and the UNIX trademark==
4: ... operating systems that are generally considered "Unix-like" may not comply with the full POSIX specific...
6: ==Development of Unix-like systems==
7: ...lable to academic users of UNIX. The proprietary Unix-like operating systems that were available in the...

Unix (23316 bytes)
1: '''UNIX'''® (or '''Unix''') is a [[portability|portable]], multi-task and...
5: ...highly popular and influential, the beginnings of UNIX are unremarkable.
11: ... castrated MULTICS, the name was later changed to UNIX, and thus a legacy was born.
13: ...ram with a full [[typesetting]] capability. The ''UNIX Programmer's Manual'' was published on [[November...
15: ...cceleration in the development of UNIX. AT&T made UNIX available to universities and commercial firms, a...

Ar (Unix) (1130 bytes)
1: ...er''' (also known simply as '''ar''') is a [[Unix|UNIX]] utility that maintains groups of files as a sin...
16: * [http://unixhelp.ed.ac.uk/CGI/man-cgi?ar Man page for ar]
20: [[Category:Unix programs]]

Nl (Unix) (475 bytes)
1: '''nl''' is a [[Unix]] utility for numbering lines, either from a file...
14: [[Category:Unix programs]]

Cp (Unix) (301 bytes)
3: '''cp''' is the [[command]] entered in a [[Unix shell]] to copy a [[computer file|file]] from one...
5: [[Category:Unix programs]]

Dc (Unix) (3633 bytes)
1: ...user-friendly (with its [[infix notation]]) [[bc (Unix)|bc]] calculator program was implemented on top o...
5: Unlike [[bc (Unix)|bc]], dc is based on [[reverse Polish notation|r...
50: ...c The sources for the manual page for 7th Edition Unix dc]
51: ....com/cm/cs/who/dmr/hist.html The Evolution of the Unix Timesharing System]
53: [[Category:Unix programs]]

Ln (Unix) (1847 bytes)
1: <tt>'''ln'''</tt> is a program on [[Unix]] and Unix-like systems that provides filesystem links.
6: Links on Unix come in two types: '''hard links''' and '''[[symb...
8: ...[[kernel (software engineering)|kernel]] level in Unix they behave more transparently. A symlink's targe...
15: [[Category:Unix programs]]

Nm (Unix) (900 bytes)
1: ...ommand ships with a number of later versions of [[Unix]] and similar [[operating system]]s. nm is used ...
6: [[Category:Unix programs]]

Wc (Unix) (836 bytes)
1: ...ort for '''w'''ord '''c'''ount) is a command in [[Unix-like]] operating systems.

Ps (Unix) (862 bytes)
1: In most [[Unix-like]] operating systems, the '''ps''' [[Command_...
7: For a real-time view of processes, see [[Top_(Unix)|top]].
9: [[Category:Unix programs]]

Du (Unix) (872 bytes)
1: {{wrongtitle|title=du (Unix)}}
3: ... (abbreviated from '''d'''isk '''u'''sage) is a [[Unix]] [[computer program]] to display the amount of d...
5: ...du</code> may vary from that shown by <code>[[df (Unix)|df]]</code> if files have been deleted but their...
9: ...ty may first have appeared in version 3 of [[AT&T UNIX]].
15: [[Category:Unix programs]]

Ex (Unix) (826 bytes)
1: ...sonality is more or less identical to the [[edit (Unix)|edit]] program with the exception that some swit...

Od (Unix) (1090 bytes)
1: ...|''o''ctal]] ''d''umping program for [[Unix]] and Unix-like systems. It also dumps hexadecimal or decima...
4: ...dump of executable data is very long. The [[head (Unix)|head]] program prints out the first few lines of...
18: [[Category:Unix programs]]

Who (Unix) (295 bytes)
1: ...mmand which creates almost the same output as the Unix-command "[[w]]"; it shows you users currently log...
3: [[Category:Unix programs]]

Less (Unix) (419 bytes)

Unix philosophy (6337 bytes)
1: ... on the experience of leading developers of the [[Unix]] [[operating system]]. Many individuals have exa...
3: ==McIlroy: A Quarter Century of Unix==
5: ...y in [[Peter H. Salus]]' ''[[A Quarter Century of Unix]]'' as follows:
6: :"This is the Unix philosophy:
13: ...f the three tenets, only the third is specific to Unix. This sequential text-stream processing paradigm ...

Unix time (18550 bytes)
1: ...nts in [[time]]. It is widely used not only on [[Unix]]-like operating systems but in many other comput...
4: There are two layers of encoding that make up Unix time, and they can be usefully separated. The fi...
8: Modern Unix time is based strictly on [[UTC]]. UTC counts ti...
10: ...n will use [[ISO 8601]] date format, in which the Unix epoch is 1970-01-01T00:00:00Z.
12: ...4472 days before the epoch, is represented by the Unix time number -4472 * 86400 = -386380800.

Touch (Unix) (923 bytes)
1: ...t>'''touch'''</tt> is a program on [[Unix]] and [[Unix-like]] systems used for changing the date and tim...
7: [[Category:Unix programs]]

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