gistfile1

>> IO.for_fd(3)
ArgumentError: The given fd is not accessible because RubyVM reserves it
        from (irb):23:in `for_fd'
        from (irb):23
        from /Users/jessestorimer/.rbenv/versions/1.9.3-p0-perf/bin/irb:12:in `<main>'
>> IO.for_fd(4)
ArgumentError: The given fd is not accessible because RubyVM reserves it
        from (irb):24:in `for_fd'
        from (irb):24
        from /Users/jessestorimer/.rbenv/versions/1.9.3-p0-perf/bin/irb:12:in `<main>'

Pipes, apparently. Although those may just be placeholders in order to reserve the FDs.

irb     6630 wisq    0u   CHR  136,1      0t0       4 /dev/pts/1
irb     6630 wisq    1u   CHR  136,1      0t0       4 /dev/pts/1
irb     6630 wisq    2u   CHR  136,1      0t0       4 /dev/pts/1
irb     6630 wisq    3r  FIFO    0,8      0t0   12037 pipe
irb     6630 wisq    4w  FIFO    0,8      0t0   12037 pipe

FYI https://twitter.com/#!/deepfryed/status/185937689235832832

…

On Sat, Mar 31, 2012 at 8:02 AM, Adrian Irving-Beer < ***@***.*** > wrote: Pipes, apparently. Although those may just be placeholders in order to reserve the FDs. ``` irb 6630 wisq 0u CHR 136,1 0t0 4 /dev/pts/1 irb 6630 wisq 1u CHR 136,1 0t0 4 /dev/pts/1 irb 6630 wisq 2u CHR 136,1 0t0 4 /dev/pts/1 irb 6630 wisq 3r FIFO 0,8 0t0 12037 pipe irb 6630 wisq 4w FIFO 0,8 0t0 12037 pipe ``` --- Reply to this email directly or view it on GitHub: https://gist.github.com/2258556