aboutsummaryrefslogtreecommitdiff
path: root/coreutils-5.3.0-bin/man/cat1p/env.1p.txt
diff options
context:
space:
mode:
authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /coreutils-5.3.0-bin/man/cat1p/env.1p.txt
downloadcli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.tar.gz
cli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.tar.bz2
cli-tools-windows-f5c4671bfbad96bf346bd7e9a21fc4317b4959df.zip
Adds most of the toolsHEADmaster
Diffstat (limited to 'coreutils-5.3.0-bin/man/cat1p/env.1p.txt')
-rw-r--r--coreutils-5.3.0-bin/man/cat1p/env.1p.txt233
1 files changed, 233 insertions, 0 deletions
diff --git a/coreutils-5.3.0-bin/man/cat1p/env.1p.txt b/coreutils-5.3.0-bin/man/cat1p/env.1p.txt
new file mode 100644
index 0000000..119f6c4
--- /dev/null
+++ b/coreutils-5.3.0-bin/man/cat1p/env.1p.txt
@@ -0,0 +1,233 @@
+env(P) env(P)
+
+
+
+
+
+NAME
+ env - set the environment for command invocation
+
+SYNOPSIS
+ env [-i][name=value]... [utility [argument...]]
+
+DESCRIPTION
+ The env utility shall obtain the current environment,
+ modify it according to its arguments, then invoke the
+ utility named by the utility operand with the modified
+ environment.
+
+ Optional arguments shall be passed to utility.
+
+ If no utility operand is specified, the resulting envi-
+ ronment shall be written to the standard output, with
+ one name= value pair per line.
+
+OPTIONS
+ The env utility shall conform to the Base Definitions
+ volume of IEEE Std 1003.1-2001, Section 12.2, Utility
+ Syntax Guidelines.
+
+ The following options shall be supported:
+
+ -i Invoke utility with exactly the environment spec-
+ ified by the arguments; the inherited environment
+ shall be ignored completely.
+
+
+OPERANDS
+ The following operands shall be supported:
+
+ name=value
+ Arguments of the form name= value shall modify
+ the execution environment, and shall be placed
+ into the inherited environment before the utility
+ is invoked.
+
+ utility
+ The name of the utility to be invoked. If the
+ utility operand names any of the special built-in
+ utilities in Special Built-In Utilities , the
+ results are undefined.
+
+ argument
+ A string to pass as an argument for the invoked
+ utility.
+
+
+STDIN
+ Not used.
+
+INPUT FILES
+ None.
+
+ENVIRONMENT VARIABLES
+ The following environment variables shall affect the
+ execution of env:
+
+ LANG Provide a default value for the internationaliza-
+ tion variables that are unset or null. (See the
+ Base Definitions volume of IEEE Std 1003.1-2001,
+ Section 8.2, Internationalization Variables for
+ the precedence of internationalization variables
+ used to determine the values of locale cate-
+ gories.)
+
+ LC_ALL If set to a non-empty string value, override the
+ values of all the other internationalization
+ variables.
+
+ LC_CTYPE
+ Determine the locale for the interpretation of
+ sequences of bytes of text data as characters
+ (for example, single-byte as opposed to multi-
+ byte characters in arguments).
+
+ LC_MESSAGES
+ Determine the locale that should be used to
+ affect the format and contents of diagnostic mes-
+ sages written to standard error.
+
+ NLSPATH
+ Determine the location of message catalogs for
+ the processing of LC_MESSAGES .
+
+ PATH Determine the location of the utility, as
+ described in the Base Definitions volume of
+ IEEE Std 1003.1-2001, Chapter 8, Environment
+ Variables. If PATH is specified as a name= value
+ operand to env, the value given shall be used in
+ the search for utility.
+
+
+ASYNCHRONOUS EVENTS
+ Default.
+
+STDOUT
+ If no utility operand is specified, each name= value
+ pair in the resulting environment shall be written in
+ the form:
+
+
+ "%s=%s\n", <name>, <value>
+
+ If the utility operand is specified, the env utility
+ shall not write to standard output.
+
+STDERR
+ The standard error shall be used only for diagnostic
+ messages.
+
+OUTPUT FILES
+ None.
+
+EXTENDED DESCRIPTION
+ None.
+
+EXIT STATUS
+ If utility is invoked, the exit status of env shall be
+ the exit status of utility; otherwise, the env utility
+ shall exit with one of the following values:
+
+ 0 The env utility completed successfully.
+
+ 1-125 An error occurred in the env utility.
+
+ 126 The utility specified by utility was found but
+ could not be invoked.
+
+ 127 The utility specified by utility could not be
+ found.
+
+
+CONSEQUENCES OF ERRORS
+ Default.
+
+ The following sections are informative.
+
+APPLICATION USAGE
+ The command, env, nice, nohup, time, and xargs utilities
+ have been specified to use exit code 127 if an error
+ occurs so that applications can distinguish "failure to
+ find a utility" from "invoked utility exited with an
+ error indication". The value 127 was chosen because it
+ is not commonly used for other meanings; most utilities
+ use small values for "normal error conditions" and the
+ values above 128 can be confused with termination due to
+ receipt of a signal. The value 126 was chosen in a simi-
+ lar manner to indicate that the utility could be found,
+ but not invoked. Some scripts produce meaningful error
+ messages differentiating the 126 and 127 cases. The dis-
+ tinction between exit codes 126 and 127 is based on
+ KornShell practice that uses 127 when all attempts to
+ exec the utility fail with [ENOENT], and uses 126 when
+ any attempt to exec the utility fails for any other rea-
+ son.
+
+ Historical implementations of the env utility use the
+ execvp() or execlp() functions defined in the System
+ Interfaces volume of IEEE Std 1003.1-2001 to invoke the
+ specified utility; this provides better performance and
+ keeps users from having to escape characters with spe-
+ cial meaning to the shell. Therefore, shell functions,
+ special built-ins, and built-ins that are only provided
+ by the shell are not found.
+
+EXAMPLES
+ The following command:
+
+
+ env -i PATH=/mybin mygrep xyz myfile
+
+ invokes the command mygrep with a new PATH value as the
+ only entry in its environment. In this case, PATH is
+ used to locate mygrep, which then must reside in /mybin.
+
+RATIONALE
+ As with all other utilities that invoke other utilities,
+ this volume of IEEE Std 1003.1-2001 only specifies what
+ env does with standard input, standard output, standard
+ error, input files, and output files. If a utility is
+ executed, it is not constrained by the specification of
+ input and output by env.
+
+ The -i option was added to allow the functionality of
+ the withdrawn - option in a manner compatible with the
+ Utility Syntax Guidelines.
+
+ Some have suggested that env is redundant since the same
+ effect is achieved by:
+
+
+ name=value ... utility [ argument ... ]
+
+ The example is equivalent to env when an environment
+ variable is being added to the environment of the com-
+ mand, but not when the environment is being set to the
+ given value. The env utility also writes out the current
+ environment if invoked without arguments. There is suf-
+ ficient functionality beyond what the example provides
+ to justify inclusion of env.
+
+FUTURE DIRECTIONS
+ None.
+
+SEE ALSO
+ Parameters and Variables , Special Built-In Utilities
+
+COPYRIGHT
+ Portions of this text are reprinted and reproduced in
+ electronic form from IEEE Std 1003.1, 2003 Edition,
+ Standard for Information Technology -- Portable Operat-
+ ing System Interface (POSIX), The Open Group Base Speci-
+ fications Issue 6, Copyright (C) 2001-2003 by the Insti-
+ tute of Electrical and Electronics Engineers, Inc and
+ The Open Group. In the event of any discrepancy between
+ this version and the original IEEE and The Open Group
+ Standard, the original IEEE and The Open Group Standard
+ is the referee document. The original Standard can be
+ obtained online at http://www.open-
+ group.org/unix/online.html .
+
+
+
+POSIX 2003 env(P)