ts:tldr:442f8

ts: Convert existing timestamps in a text file (eg. a log file) into [r]elative format.

$ cat ${filename} | ts -r

try on your machine

This command has two parts:

cat ${filename}: The cat command is used to display the contents of a file on the terminal. ${filename} is a placeholder that should be replaced with the actual name of a file. So, this part of the command is reading the contents of the specified file and sending it as output.
| ts -r: The | symbol is a pipe operator that allows the output of one command to be passed as input to another command. In this case, the output of cat ${filename} is being piped to the ts command.

The ts command, when used with the -r flag, adds a timestamp to each line of input. So, the combined command cat ${filename} | ts -r displays the contents of the specified file with a timestamp added to each line.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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