SYSTEM.3
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上传日期:2007-02-01
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操作系统开发
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C/C++
- ." @(#)system.3 6.1 (Berkeley) 5/15/85
- ."
- .TH SYSTEM 3 "May 15, 1985"
- .AT 3
- .SH NAME
- system - issue a shell command
- .SH SYNOPSIS
- .nf
- .ft B
- #include <stdlib.h>
- int system(const char *fIstringfP)
- .fi
- .SH DESCRIPTION
- .B System
- causes the
- .I string
- to be given to
- .BR sh (1)
- as input as if the string had been typed as a command
- at a terminal.
- The current process waits until the shell has
- completed, then returns the exit status of the shell.
- .SH "SEE ALSO"
- .BR sh (1),
- .BR popen (3),
- .BR execve (2),
- .BR wait (2).
- .SH DIAGNOSTICS
- Exit status 127 indicates the shell couldn't be executed.