It would be especially useful to review the manual pages or any documentation on the following resources:

• ls(1) - lists files.
• apropos(1) - lists commands that have a given term
• unzip(1) - unzips zipped/compressed files
• uudecode(1) - decodes file.
• tac(1) - flips the text within the vertically.
• tar(1) - manages archives
• rev(1) - reverses lines of text.

a place where data is collected, preserved, managed, and made accessible to those with permission; although many are public.

in the context of Linux, an archive is a place to store as many folders / files as one needs into one centralized file for long-term use.

an archive can be compressed to be smaller

the proccess of encoding data into fewer bits than the original representation

archiving doesn't reduce file size, while compression does.

after compressing a file with a lossless technique, the original image before it was compressed should look exactly the same after it is decompressed. Lossy compression makes a file lose data everytime it is compressed and decompressed.

hg status

hg add for new files hg addremove to add removed files