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14 lines
419 B
Text
14 lines
419 B
Text
# To replace all occurrences of "day" with "night" and write to stdout:
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sed 's/day/night/g' file.txt
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# To replace all occurrences of "day" with "night" within file.txt:
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sed -i 's/day/night/g' file.txt
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# To replace all occurrences of "day" with "night" on stdin:
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echo 'It is daytime' | sed 's/day/night/g'
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# To remove leading spaces
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sed -i -r 's/^\s+//g' file.txt
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# To remove empty lines
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cat file.txt | sed '/^$/d'
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