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  1. sed "/^$/ !s/^/`date +"%Y-%m-%d"`|/"
Success #stdin #stdout 0.03s 5264KB
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stdin
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s1|foo
s2|bar
stdout
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2014-05-01|s1|foo
2014-05-01|s2|bar
https://ideone.com/rxr5bk
language:
Bash (bash 5.0.3)
created:
9 years ago
visibility:
public

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