ts

Add timestamps to every line from standard input.

TLDR

Add a timestamp to the beginning of each line

$ [some_command] | ts
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Add timestamps with microsecond precision

$ [some_command] | ts "[%b %d %H:%M:%.S]"
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Add [i]ncremental timestamps with microsecond precision, starting from zero

$ [some_command] | ts -i "[%H:%M:%.S]"
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Convert existing timestamps in a text file (eg. a log file) into [r]elative format

$ cat [path/to/file] | ts -r
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