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Question
In Linux, call the grep command to search for word 'hello' and read from the file test.txt, instad of from stdin (i.e. use file redirection syntax).
Answer
grep -w 'hello' < test.txt
^^ note the use of the < char to read input from a file instead of from stdin (which grep reads from when no file is supplied).

Question
In Linux, call the grep command to search for word 'hello' and read from the file test.txt, instad of from stdin (i.e. use file redirection syntax).
Answer
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Question
In Linux, call the grep command to search for word 'hello' and read from the file test.txt, instad of from stdin (i.e. use file redirection syntax).
Answer
grep -w 'hello' < test.txt
^^ note the use of the < char to read input from a file instead of from stdin (which grep reads from when no file is supplied).
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8. Streams and sed -- The Stream Editor
i | grep n | grep u | grep x The < character redirects the contents of a file in place of stdin. In other words, the contents of a file replace what would normally come from a keyboard. Try <span>grep GNU < gnu_lines.txt 8.4 A Complex Piping Example In Chapter 5 we used grep on a dictionary to demonstrate regular expressions. This is how a dictionary of words can be created (your dictionary might be und

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