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Added putenv, ftruncate (AMK).

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Guido van Rossum 1997-06-02 17:28:51 +00:00
parent 809408eb90
commit f967bf63f8
2 changed files with 38 additions and 0 deletions
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19
Doc/lib/libposix.tex
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@ -131,6 +131,11 @@ in the parent.
Return status for file descriptor \var{fd}, like \code{stat()}. Return status for file descriptor \var{fd}, like \code{stat()}.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{ftruncate}{fd\, length}
Truncate the file corresponding to file descriptor \var{fd},
so that it is at most \var{length} bytes in size.
\end{funcdesc}
\begin{funcdesc}{getcwd}{} \begin{funcdesc}{getcwd}{}
Return a string representing the current working directory. Return a string representing the current working directory.
\end{funcdesc} \end{funcdesc}
@ -261,6 +266,19 @@ object.
(Not on MS-DOS.) (Not on MS-DOS.)
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{putenv}{varname\, value}
Set the environment variable named \var{varname} to the string \var{value}.
Such changes to the environment affect
subprocesses started with \code{os.system()}, \code{os.popen()} or
\code{os.fork()} and \code{os.execv()}. (Not on all systems.)
When \code{putenv()} is
supported, assignments to items in \code{os.environ} are automatically
translated into corresponding calls to \code{os.putenv()}; however,
calls to \code{os.putenv()} don't update \code{os.environ}, so it is
actually preferable to assign to items of \code{os.environ}.
\end{funcdesc}
\begin{funcdesc}{read}{fd\, n} \begin{funcdesc}{read}{fd\, n}
Read at most \var{n} bytes from file descriptor \var{fd}. Read at most \var{n} bytes from file descriptor \var{fd}.
Return a string containing the bytes read. Return a string containing the bytes read.
@ -281,6 +299,7 @@ points. (On systems without symbolic links, this always raises
\begin{funcdesc}{remove}{path} \begin{funcdesc}{remove}{path}
Remove the file \var{path}. See \code{rmdir} below to remove a directory. Remove the file \var{path}. See \code{rmdir} below to remove a directory.
This is identical to the \code{unlink} function documented below.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{rename}{src\, dst} \begin{funcdesc}{rename}{src\, dst}

19
Doc/libposix.tex
View file

@ -131,6 +131,11 @@ in the parent.
Return status for file descriptor \var{fd}, like \code{stat()}. Return status for file descriptor \var{fd}, like \code{stat()}.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{ftruncate}{fd\, length}
Truncate the file corresponding to file descriptor \var{fd},
so that it is at most \var{length} bytes in size.
\end{funcdesc}
\begin{funcdesc}{getcwd}{} \begin{funcdesc}{getcwd}{}
Return a string representing the current working directory. Return a string representing the current working directory.
\end{funcdesc} \end{funcdesc}
@ -261,6 +266,19 @@ object.
(Not on MS-DOS.) (Not on MS-DOS.)
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{putenv}{varname\, value}
Set the environment variable named \var{varname} to the string \var{value}.
Such changes to the environment affect
subprocesses started with \code{os.system()}, \code{os.popen()} or
\code{os.fork()} and \code{os.execv()}. (Not on all systems.)
When \code{putenv()} is
supported, assignments to items in \code{os.environ} are automatically
translated into corresponding calls to \code{os.putenv()}; however,
calls to \code{os.putenv()} don't update \code{os.environ}, so it is
actually preferable to assign to items of \code{os.environ}.
\end{funcdesc}
\begin{funcdesc}{read}{fd\, n} \begin{funcdesc}{read}{fd\, n}
Read at most \var{n} bytes from file descriptor \var{fd}. Read at most \var{n} bytes from file descriptor \var{fd}.
Return a string containing the bytes read. Return a string containing the bytes read.
@ -281,6 +299,7 @@ points. (On systems without symbolic links, this always raises
\begin{funcdesc}{remove}{path} \begin{funcdesc}{remove}{path}
Remove the file \var{path}. See \code{rmdir} below to remove a directory. Remove the file \var{path}. See \code{rmdir} below to remove a directory.
This is identical to the \code{unlink} function documented below.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{rename}{src\, dst} \begin{funcdesc}{rename}{src\, dst}