I tried using the whence command for some of the new built-ins in
ksh-20140929 and was quite confused by what I saw as the following
illustrates:
$ whence grep
/usr/bin/grep
$ : What? I thought grep was built in.
$ whence -v grep
grep is a shell builtin version of /usr/bin/grep
$ : OK, so I thought it was a built-in version of AST grep.
$ whence -a grep
grep is a shell builtin version of /usr/bin/grep
grep is a shell builtin version of /opt/ast/bin/grep
$ : OK, there\'s the AST grep. But, if it\'s built-in, how can there be two
$ : versions? Obviously $PATH is being applied here.
$ whence -t grep
file
$ : Again, I thought it was built-in. Compare with the intrinsic built-in,
$ : read.
$ whence read
read
$ whence -v read
read is a shell builtin
$ whence -t read
builtin
Terrence Doyle
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