Compare two files on a GNU/Linux system to verify if they are identical or not.

sha256sum file_1.txt
sha256sum file_2.txt

Only use sha256sum. Do not use sha1sum or md5sum.

Spaces can be escaped with a backslash:

sha256sum file\ 3.txt

Links:

• https://www.baeldung.com/linux/fastest-check-files-same-content
• https://unix.stackexchange.com/questions/260513/diffference-between-sha1sum-sha256sum-and-md5sum
• https://askubuntu.com/questions/172947/what-are-the-differences-between-md5sum-and-sha256sum