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tac:tldr:316db
tac: Concatenate specific files in reversed order.
$ tac ${filename1 filename2 ---}
try on your machine
The command "tac" stands for "reverse concatenate," and it is a Unix command used to display the contents of a file in reverse order.
In the given command "tac ${filename1 filename2 ---}", the "filename1", "filename2", and "---" are placeholders for the actual filenames of the files you want to display in reverse order.
To use the command, you would replace "${filename1 filename2 ---}" with the actual filenames you want to process. For example, if you have two files named "file1.txt" and "file2.txt" that you want to display in reverse order, you would use the command like this: "tac file1.txt file2.txt".
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.