SH(3F)SH(3F)NAMEsh - fast execution of an sh shell command
SYNOPSIS
integer function sh (string)
character*(*) string
DESCRIPTION
The function sh gives string to the sh shell as input, as if the string
had been typed as a command.
The shell is always the Bourne shell, sh(1).
The current process waits until the command terminates. The returned
value is the exit status of the shell. See wait(2) for an explanation
of this value.
The functions sh(3f) and system(3f) pass the argument string to a shell
for execution. They convert the argument string from a Fortran charac‐
ter value to a C string value and pass it to the C routine system(3c).
The routines sh(3f) and system(3f) differ in that system flushes the
Fortran I/O buffers before calling the C routine system, while sh does
not. Flushing the buffers can take significant time, and so, if any
Fortran output is irrelevant to the result of the call, the routine sh
is preferred over the routine system.
Note that both sh(3f) and system(3f) return integer results. There‐
fore, they must be declared to be of type INTEGER.
FILES
libfui.a
SEE ALSOexecve(2), wait(2), system(3c)BUGS
string cannot be longer than 1024 characters.
07 July 1995 SH(3F)
