3
votes
2answers
153 views

Should stdin or filenames be discarded if both are provided?

grep and sed ignore stdin if you provide a filename parameter: $ echo foo > test.txt $ echo foobar | grep f test.txt foo $ echo foobar | sed -e 's/foo/bar/' test.txt bar Is this established ...
2
votes
5answers
656 views

Where are command line arguments (e.g. 'some.text') actually passed to?

From what I know, parameters you pass to a command, goes to it's STDIN stream. so this: cut -d. -f2 'some.text' should be perfectly identical to this: echo 'some.text' | cut -d. -f2 as we send ...
3
votes
1answer
166 views

How can I pipe a path to pushd?

This seems like it should be easy enough to do, but I'm clearly not understanding something fundamental about piping output back and forth. I'm trying to do something like this: bundle show ...