Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
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You're replying to a comment by Cam Hutchison.
You have to be careful doing a read loop over stdin, as any programs inside the loop will also have their stdin attached to the same source as the read command. It occasionally produces screwy results and causes a lot of head scratching.
An alternative is to read from a different file descriptor:
exec 3< input_file.txt # open input_file.txt on fd 3
while read -u 3 -r line ; do
# do stuff here
exec 3<&- # close fd 3
This potentially has the same problem because fd 3 will be inherited by the programs in the loop, but there is very little likelihood that they will try and read from it, as they may with fd 0 (stdin).
And now we're getting even further from a one-liner...
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Peteris Krumins' blog about programming, hacking, software reuse, software ideas, computer security, browserling, google and technology.
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I love to read science books. They make my day and I get ideas for awesome blog posts, such as Busy Beaver, On Functors, Recursive Regular Expressions and many others.
Take a look at my Amazon wish list, if you're curious about what I have planned reading next, and want to surprise me. :)
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