You use pipe in cases where the command expects parameters from the standard input. See Input, outputs and arguments - superuser
# Question
How could I pipe the result from a which command to cd? This is what I am trying to do:
which oracle | cd cd < which oracle
which doesn;t work.
# Answer
With cd command that is not the case. The directory is the command argument.
In such case, you can use command substitution. Use backticks or $(...) to evaluate the command, store it into variable:
path=`which oracle` echo $path # just for debug cd $path
although it can be done in a much simpler way:
cd `which oracle`
or
cd $(which oracle)
which is equivalent to backtick notation, but is recommended (backticks can be confused with apostrophes) .. but it looks like you want:
cd $(dirname $(which oracle))
(which shows you that you can use nesting easily) $(...) (as well as backticks) work also in double-quoted strings, which helps when the result may eventually contain spaces.
cd "$(dirname "$(which oracle)")"
# See also
Here we take a discussion a rewrite it as documentation. The original discussion was here - on stackoverflow