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Chapter 45 Shell Programming for the Initiated |
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45.24 A Shell Can Read a Script from its Standard Input, But...
A: The first way keeps the script from reading anything else from its input. Consider the zip script:
A:
while read word do echo $word | sed s/foo/bar/ done
If run as
sh zip
, it will read from your terminal, replacing
foo
with
bar
. If run as
sh < zip
, it will exit right away, since
after reading the script, there's no input left.
- in net.unix on Usenet, 29 December 1984
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| 45.23 The Ins and Outs of Redirected I/O Loops |
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45.25 Shell Scripts On-the-Fly from Standard Input |
