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diff --git a/upstream/mageia-cauldron/man1p/exec.1p b/upstream/mageia-cauldron/man1p/exec.1p new file mode 100644 index 00000000..7f97f56c --- /dev/null +++ b/upstream/mageia-cauldron/man1p/exec.1p @@ -0,0 +1,186 @@ +'\" et +.TH EXEC "1P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. +.\" +.SH NAME +exec +\(em execute commands and open, close, or copy file descriptors +.SH SYNOPSIS +.LP +.nf +exec \fB[\fIcommand \fB[\fIargument\fR...\fB]]\fR +.fi +.SH DESCRIPTION +The +.IR exec +utility shall open, close, and/or copy file descriptors as specified by +any redirections as part of the command. +.P +If +.IR exec +is specified without +.IR command +or +.IR argument s, +and any file descriptors with numbers greater than 2 are opened with +associated redirection statements, it is unspecified whether those file +descriptors remain open when the shell invokes another utility. +Scripts concerned that child shells could misuse open file descriptors +can always close them explicitly, as shown in one of the following +examples. +.P +If +.IR exec +is specified with +.IR command , +it shall replace the shell with +.IR command +without creating a new process. If +.IR argument s +are specified, they shall be arguments to +.IR command . +Redirection affects the current shell execution environment. +.SH OPTIONS +None. +.SH OPERANDS +See the DESCRIPTION. +.SH STDIN +Not used. +.SH "INPUT FILES" +None. +.SH "ENVIRONMENT VARIABLES" +None. +.SH "ASYNCHRONOUS EVENTS" +Default. +.SH STDOUT +Not used. +.SH STDERR +The standard error shall be used only for diagnostic messages. +.SH "OUTPUT FILES" +None. +.SH "EXTENDED DESCRIPTION" +None. +.SH "EXIT STATUS" +If +.IR command +is specified, +.IR exec +shall not return to the shell; rather, the exit status of the process +shall be the exit status of the program implementing +.IR command , +which overlaid the shell. If +.IR command +is not found, the exit status shall be 127. If +.IR command +is found, but it is not an executable utility, the exit status shall be +126. If a redirection error occurs (see +.IR "Section 2.8.1" ", " "Consequences of Shell Errors"), +the shell shall exit with a value in the range 1\-125. Otherwise, +.IR exec +shall return a zero exit status. +.SH "CONSEQUENCES OF ERRORS" +Default. +.LP +.IR "The following sections are informative." +.SH "APPLICATION USAGE" +None. +.SH EXAMPLES +Open +.IR readfile +as file descriptor 3 for reading: +.sp +.RS 4 +.nf + +exec 3< readfile +.fi +.P +.RE +.P +Open +.IR writefile +as file descriptor 4 for writing: +.sp +.RS 4 +.nf + +exec 4> writefile +.fi +.P +.RE +.P +Make file descriptor 5 a copy of file descriptor 0: +.sp +.RS 4 +.nf + +exec 5<&0 +.fi +.P +.RE +.P +Close file descriptor 3: +.sp +.RS 4 +.nf + +exec 3<&- +.fi +.P +.RE +.P +Cat the file +.BR maggie +by replacing the current shell with the +.IR cat +utility: +.sp +.RS 4 +.nf + +exec cat maggie +.fi +.P +.RE +.SH "RATIONALE" +Most historical implementations were not conformant in that: +.sp +.RS 4 +.nf + +foo=bar exec cmd +.fi +.P +.RE +.P +did not pass +.BR foo +to +.BR cmd . +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "Section 2.14" ", " "Special Built-In Utilities" +.\" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1-2017, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, 2018 Edition, +Copyright (C) 2018 by the Institute 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.opengroup.org/unix/online.html . +.PP +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |