The command interpreter for the Bourne shell (
sh
)
or the Korn shell (
ksh
) can be invoked as follows:
sh
[
options
] [
arguments
]
ksh
[
options
] [
arguments
]
ksh
and
sh
can execute commands from a terminal
(when
-i
is specified), from a file (when the
first
argument
is an executable script), or
from standard input (if no arguments remain or if
-s
is specified).
-
Arguments
-
Arguments are assigned in order to the positional parameters
$1
,
$2
, etc. If array assignment is in effect
(
-A
or
+A
), arguments are assigned as array
elements. If the first argument is an executable script,
commands are read from it, and remaining arguments are assigned
to
$1
,
$2
, etc.
-
Options
-
-
-c
str
-
Read commands from string
str
.
-
-i
-
Create an interactive shell (prompt for input).
-
-p
-
Start up as a privileged user (i.e., don't process
$HOME/.profile
).
-
-r
-
Create a restricted shell (same as
rksh
or
rsh
).
-
-s
-
Read commands from standard input;
output from built-in commands goes to file descriptor 1;
all other shell output goes to file descriptor 2.
The remaining options to
sh
and
ksh
are
listed under the
set
built-in command.