ICYMI: The Linux Command Line: A Complete Introduction, 2nd Edition

In case you missed it, the second edition of The Linux Command Line: A Complete Introduction from No Starch Press is now available. This edition, based on the fifth Internet edition of TLCL contains many improvements and modernizations compared to the first edition.

If you're looking for a more "tangible" version of TLCL, pick up a copy of The Linux Command Line: A Complete Introduction, 2nd Edition wherever fine books are sold.