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Grep -B used with -f? (Searching a file using a list of terms, output is lines before each match)


 
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Grep -B used with -f? (Searching a file using a list of terms, output is lines before each match)

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Test Your Knowledge in Computers #913
Difficulty: Medium
In bash, grep -v -e '^[[:space:]]*$' filename.txt will filter all the blank lines from filename.txt and display the results.
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