[BASH] How to get command name of piped output

telebabbo · 05-27-2012, 11:11 AM

I have:

Code:

echo "one two three test" | myprogram

and I want 'myprogram' to return (or store into variable):
- "one two three test"
- "echo"

Any ideas?

pixellany · 05-27-2012, 11:26 AM

Try this:

Code:

program="echo"
echo "$program one two three four" | myprogram

Then, in "myprogram", strip off the first word and store into desired variable

colucix · 05-27-2012, 11:54 AM

As pixellany did show, there is no way to retrieve the name of the command that generated the piped standard input (unless you explicitly write it down) since the program is invoked after the standard input is generated and every information about the generator is lost.