Stdout - Revision history

Jimbo at 19:02, 28 May 2007

2007-05-28T19:02:27Z

Jimbo at 19:02, 28 May 2007

2007-05-28T19:02:04Z

Jimbo at 19:01, 28 May 2007

2007-05-28T19:01:40Z

New page

'''stdout''' is the '''standard output''' of a program - which, typically, is dumped to the [[console]] unless you've [[redirect]]ed it somewhere else.

'''stdin''' is the '''standard input''' of a program - in other words, where it typically receives data. You may [[pipe]] one program's '''stdout''' to another program's '''stdin''' - for example, '''ls -l /usr/ports/www | [[grep]] php''' will make the [[grep]] utility look for the word "php" in the output of the [[ls]] of the www [[ports]] directory.

'''stderr''' is the '''standard error''' of a program - generally, if not redirected, it will also dump to the console with '''stdout''' but in a bright white color instead of the light gray color of '''stdout'''. It is useful to have programs write error or system messages to '''stderr''' instead of '''stdout''' so that they may be redirected elsewhere from normal program output - for example, to a log file.

[[Category:FreeBSD Terminology]]

@@ Line 1: / Line 1: @@
-'''stdout''' is the ''standard output'' of a program - which, typically, is dumped to the [[console]] unless you've [[redirect]]ed it somewhere else.
+'''stdout''' is the ''standard output'' stream of a program - which, typically, is dumped to the [[console]] unless you've [[redirect]]ed it somewhere else.
-'''stdin''' is the ''standard input'' of a program - in other words, where it typically receives data.  You may [[pipe]] one program's '''stdout''' to another program's '''stdin''' - for example, '''ls -l /usr/ports/www | [[grep]] php''' will make the [[grep]] utility look for the word "php" in the output of the [[ls]] of the www [[ports]] directory.
+'''stdin''' is the ''standard input'' stream of a program - in other words, where it typically receives data.  You may [[pipe]] one program's '''stdout''' to another program's '''stdin''' - for example, '''ls -l /usr/ports/www | [[grep]] php''' will make the [[grep]] utility look for the word "php" in the output of the [[ls]] of the www [[ports]] directory.
-'''stderr''' is the ''standard error'' of a program - generally, if not redirected, it will also dump to the console with '''stdout''' but in a bright white color instead of the light gray color of '''stdout'''.  It is useful to have programs write error or system messages to '''stderr''' instead of '''stdout''' so that they may be redirected elsewhere from normal program output - for example, to a log file.
+'''stderr''' is the ''standard error'' stream of a program - generally, if not redirected, it will also dump to the console with '''stdout''' but in a bright white color instead of the light gray color of '''stdout'''.  It is useful to have programs write error or system messages to '''stderr''' instead of '''stdout''' so that they may be redirected elsewhere from normal program output - for example, to a log file.
 [[Category:FreeBSD Terminology]]