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Run as a daemon or service: Difference between revisions
→{{libheader|BSD libc}}: doesn't really simplify much: there's freopen anyway
(→{{header|C}}: Describe BSDisms. Keep dup2() in program.) |
(→{{libheader|BSD libc}}: doesn't really simplify much: there's freopen anyway) |
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[[BSD]] provides a convenient [http://netbsd.gw.com/cgi-bin/man-cgi?daemon+3+NetBSD-current daemon(3)] function. [[GNU]] libc also provides [http://www.kernel.org/doc/man-pages/online/pages/man3/daemon.3.html daemon(3)], but [[POSIX]] omits it, so it is not portable. Other BSDisms in this program are __progname and <err.h>.
The task also wants to redirect stdout. This program does so with [http://netbsd.gw.com/cgi-bin/man-cgi?dup2+2+NetBSD-current dup2(2)].
<lang c>#include <err.h>
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