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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/setenv.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/setenv.3')
-rw-r--r-- | man3/setenv.3 | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/man3/setenv.3 b/man3/setenv.3 deleted file mode 100644 index d51f0f8..0000000 --- a/man3/setenv.3 +++ /dev/null @@ -1,150 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" and Copyright (C) 2004, 2007 Michael Kerrisk <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" References consulted: -.\" Linux libc source code -.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) -.\" 386BSD man pages -.\" Modified Sat Jul 24 18:20:58 1993 by Rik Faith (faith@cs.unc.edu) -.\" Modified Fri Feb 14 21:47:50 1997 by Andries Brouwer (aeb@cwi.nl) -.\" Modified 9 Jun 2004, Michael Kerrisk <mtk.manpages@gmail.com> -.\" Changed unsetenv() prototype; added EINVAL error -.\" Noted nonstandard behavior of setenv() if name contains '=' -.\" 2005-08-12, mtk, glibc 2.3.4 fixed the "name contains '='" bug -.\" -.TH setenv 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -setenv \- change or add an environment variable -.SH LIBRARY -Standard C library -.RI ( libc ", " \-lc ) -.SH SYNOPSIS -.nf -.B #include <stdlib.h> -.P -.BI "int setenv(const char *" name ", const char *" value ", int " overwrite ); -.BI "int unsetenv(const char *" name ); -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR setenv (), -.BR unsetenv (): -.nf - _POSIX_C_SOURCE >= 200112L - || /* glibc <= 2.19: */ _BSD_SOURCE -.fi -.SH DESCRIPTION -The -.BR setenv () -function adds the variable -.I name -to the -environment with the value -.IR value , -if -.I name -does not -already exist. -If -.I name -does exist in the environment, then -its value is changed to -.I value -if -.I overwrite -is nonzero; -if -.I overwrite -is zero, then the value of -.I name -is not changed (and -.BR setenv () -returns a success status). -This function makes copies of the strings pointed to by -.I name -and -.I value -(by contrast with -.BR putenv (3)). -.P -The -.BR unsetenv () -function deletes the variable -.I name -from -the environment. -If -.I name -does not exist in the environment, -then the function succeeds, and the environment is unchanged. -.SH RETURN VALUE -.BR setenv () -and -.BR unsetenv () -functions return zero on success, -or \-1 on error, with -.I errno -set to indicate the error. -.SH ERRORS -.TP -.B EINVAL -.I name -is NULL, points to a string of length 0, -or contains an \[aq]=\[aq] character. -.TP -.B ENOMEM -Insufficient memory to add a new variable to the environment. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR setenv (), -.BR unsetenv () -T} Thread safety MT-Unsafe const:env -.TE -.SH STANDARDS -POSIX.1-2008. -.SH HISTORY -POSIX.1-2001, 4.3BSD. -.P -Prior to glibc 2.2.2, -.BR unsetenv () -was prototyped -as returning -.IR void ; -more recent glibc versions follow the -POSIX.1-compliant prototype shown in the SYNOPSIS. -.SH CAVEATS -POSIX.1 does not require -.BR setenv () -or -.BR unsetenv () -to be reentrant. -.SH BUGS -POSIX.1 specifies that if -.I name -contains an \[aq]=\[aq] character, then -.BR setenv () -should fail with the error -.BR EINVAL ; -however, versions of glibc before glibc 2.3.4 allowed an \[aq]=\[aq] sign in -.IR name . -.SH SEE ALSO -.BR clearenv (3), -.BR getenv (3), -.BR putenv (3), -.BR environ (7) |