z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

ex
Localization
Portability
Related Information
ed, vi
–s Suppresses all interactive feedback (quiet mode). This is for batch mode
operation; ex assumes the terminal cannot display text and ignores the
value of TERM. ex also ignores all startup files and ignores the value of
EXINIT.
–t tag Edits the file containing the specified tag and sets the virtual position in the
edit buffer to point of definition for the tag.
–v Invokes vi.
–w size
Sets the option variable window equal to size.
–x Uses encryption.
ex uses the following localization environment variables:
v LANG
v LC_ALL
v LC_CTYPE
v LC_MESSAGES
v NLSPATH
See Appendix F for more information.
POSIX.2 User Portability Extension, X/Open Portability Guide, UNIX systems.
–x is an extension to the POSIX standard.
exec — Run a command and open, close, or copy the file descriptors
Format
Description
exec [–a name] [command_line]
tcsh shell: exec command
The command_line argument for exec specifies a command line for another
command. exec runs this command without creating a new process. Some people
picture this action as overlaying the command on top of the currently running shell.
Thus, when the command exits, control returns to the parent of the shell.
Input and output redirections are valid in command_line. You can change the input
and output descriptors of the shell by giving only input and output redirections in the
command. For example:
exec 2>errors
redirects the standard error stream to errors in all subsequent commands ran by
the shell.
If you do not specify command_line, exec returns a successful exit status.
260 z/OS V1R9.0 UNIX System Services Command Reference