I'm not objecting to this package, but for those who want achieve what it does without having to depend on an extra package, I offer the following. On Sun, Jan 10, 2016 at 10:17:22AM +1100, Kevin Murray wrote: > Hail gets its name from a contraction of head and tail, the common alternative > to this program. It extracts lines from a file, taken on stdin, and prints them > on stdout. It's so simple that the Unix wizards of old never bothered. The README gives the following examples: # prints 1 through 10, i.e. does nothing seq 1 10 | hail 1- # prints 1 through 3, i.e. equivalent to `head -n 3` seq 1 10 | hail 1-3 # prints 3 through 5, i.e. equivalent to `head -n 5 | tail -n 3` seq 1 10 | hail 3-5 # prints 5 through 10, i.e. equivalent to `tail -n 6` seq 1 10 | hail 5- # prints 2, 3, 5 and 7, which is where I'll give up on my comparisons to # head and tail seq 1 10 | hail 2-3 5-5 7-7 These can be done with sed: seq 1 10 | sed -n '1,$p' seq 1 10 | sed -n '1,3p' seq 1 10 | sed -n '3,5p' seq 1 10 | sed -n '5,$p' seq 1 10 | sed -n '2,3p;5p;7p' The syntax is not quite as easy, of course. Happy hacking. -- Schrödinger's backup hypothesis: the condition of any backup is undefined until a restore is attempted. -- andrewsh
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