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

grep
Portability
Related Information
ed, find
POSIX.2, X/Open Portability Guide, UNIX systems.
Only the grep command is part of the POSIX and X/Open standards. The egrep
and fgrep commands are extensions. The –b option is an extension of the POSIX
standard.
hash — Create a tracked alias
Format
Description
Option
Usage Note
Localization
Exit Values
See Appendix C for more information about regexp.
hash [name ...]
hash -r
hash creates one or more tracked aliases. Each name on the command line
becomes an alias that is resolved to its full pathname; thus the shell avoids
searching the PATH directories for the command whenever you issue it. A tracked
alias is assigned its full pathname the first time that the alias is used. It is
reassigned a pathname the first time that it is used after the variable PATH is
changed or the shell command cd is used.
hash is a built-in alias defined with
alias hash=’alias -t’
If you specify hash without any arguments on the command line, hash displays the
current list of tracked aliases.
–r Removes all current tracked aliases.
hash is a built-in shell command.
hash 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.
0 Successful completion
1 Failure because of an incorrect command-line option
306 z/OS V1R9.0 UNIX System Services Command Reference