Plan 9 - man page for syscall (plan9 section 1)
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syscall - test a system call
syscall [ -o ] entry [ arg ... ]
Syscall invokes the system call entry with the given arguments. It prints the return
value and the error string, if there was an error. An argument is either an integer con-
stant as in C (its value is passed), a string (its address is passed), or the literal buf
(a pointer to a 1 Kbyte buffer is passed). If -o is given, the contents of the 1 Kbyte
buffer are printed as a zero-terminated string after the system call is done.
Write a string to standard output
syscall write 1 hello 5
Print the name of the file connected to standard input
syscall -o fstat 0 buf
Section 2 of this manual.
If entry is not a system call name, the exit status is If the system call succeeds, the
exit status is null; otherwise the exit status is the string that errstr(2) returns.
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