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

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tcsh
Table 33. tcsh Environment Variables (continued)
ENVIRONMENT VARIABLE PURPOSE
REMOTE- HOST The host from which the user has logged in remotely, if
this is the case and the shell is able to determine it.
(The z/OS tcsh shell is not currently compiled with
REMOTEHOST defined; see the version shell
variable.)
SHLVL Equivalent to the shlvl shell variable.
TERM Equivalent to the term shell varialbe.
USER Equivalent to the user shell variable.
VENDOR The vendor, as determined at compile time.
VISUAL The pathname to a default full-screen editor. See the
editor environment variable and the run-fg-editor
editor command.
Using tcsh shell variables to control automatic conversion
When the tcsh shell is redirecting stdin, stdout, or stderr, it will default to no
automatic conversion of tagged files, and no tagging of files created by the
redirection. The following tcsh shell variables will override this behavior:
Table 34. tcsh Shell Variables for Automatic Conversion
Variable Purpose
_TAG_REDIR_IN=TXT Redirected stdin will override the file’s TXTFLAG,
treating it as if it were tagged as:
TXTFLAG = ON, CCSID = existing file tag CCSID
This has no effect if CCSID = 0.
_TAG_REDIR_IN=BIN Redirected stdin will override the file’s TXTFLAG,
treating it as if it were tagged as:
TXTFLAG = OFF, CCSID = existing file tag CCSID
This effectively disables automatic conversion.
_TAG_REDIR_OUT=TXT Redirected stdout will be tagged as:
TXTFLAG = ON, CCSID = program CCSID at the time
of the first write (if not already tagged)
_TAG_REDIR_OUT=BIN Redirected stdout will be tagged as:
TXTFLAG = OFF, CCSID = program CCSID at the time
of the first write (if not already tagged)
_TAG_REDIR_ERR=TXT Redirected stderr will be tagged as:
TXTFLAG = ON, CCSID = program CCSID at the time
of the first write (if not already tagged)
_TAG_REDIR_ERR=BIN Redirected stderr will be tagged as:
TXTFLAG = OFF, CCSID = program CCSID at the time
of the first write (if not already tagged)
The automatic conversion shell variable can be specified for one command, or for
multiple commands within a tcsh shell session or shell script. If the variable is set in
a user’s .tcshrc file, then it will affect child shells, that is, nested shell scripts.
670 z/OS V1R9.0 UNIX System Services Command Reference