Re: How do I Determine if my script is being piped to?

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Re^2: How do I Determine if my script is being piped to? by netguy (Novice) on Nov 21, 2013 at 00:53 UTC
Just tested -p and looks like that's just the opposite of -t. At least in my case that is the behavior. I guess my question was more on the side of I didn't know what to search for. The -p and -t operators can accomplish what I need. It's almost silly that the solution was staring me in the face and I didn't know it. During my many searches, I came across -p a couple times and maybe -t, but didn't have the instinct to look them up. Thanks again for the help.	[reply]
Re^2: How do I Determine if my script is being piped to? by Discipulus (Canon) on Nov 21, 2013 at 09:21 UTC
ooh thanks BrowserUk never eard of `-p` operator, or may be forgotten it long time ago. Due to my ignorance i wonder if `-p -t` are one the opposite of the other: in the docs `-p` is just mentioned and, albeit self explanatory, not described. There are cases where `-t` does not suffice, are also cases where `-p` does not suffice? edge cases? My test: `perl -e " print -t STDIN ? qq(STDIN has tty) : qq(NO tty associated);p +rint ' - '; print -p STDIN ? qq(STDIN is a pipe or a named pipe) : qq +(NOT a pipe)" #out #STDIN has tty - NOT a pipe hostname \| perl -e " print -t STDIN ? qq(STDIN has tty) : qq(NO tty as +sociated);print ' - '; print -p STDIN ? qq(STDIN is a pipe or a named + pipe) : qq(NOT a pipe)" #out #NO tty associated - STDIN is a pipe or anamed pipe` [download] thanks L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]
Re^3: How do I Determine if my script is being piped to? by BrowserUk (Patriarch) on Nov 21, 2013 at 09:58 UTC
There are cases where -t does not suffice, are also cases where -p does not suffice? edge cases? Search the stat() docs for `S_IFIFO`. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]