09-29-2017
I got the RHCE for RHEL 6 a few years ago and remember it being full of useless guff, such as configuring SAMBA users as well as users for other services, as well as iSCSI, etc. that you mention, none of which I've ever used (so, of course, have forgotten - it's hard to commit such rubbish to memory!).
And, while I've studied for the RHEL 7 RHCE haven't taken the exam yet, because it's expensive and full of much the same useless stuff.
It's probably good to learn a lot of the other, more useful stuff, just for your own knowledge, but I really don't think it's worth the effort, time or money to do all that's necessary for the exam (unless someone else is paying for it).
Probably looks good on the CV, but that's about it, IMO.
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SNAKE(6) BSD Games Manual SNAKE(6)
NAME
snake, snscore -- display chase game
SYNOPSIS
snake [-w width] [-l length] [-t]
snscore
DESCRIPTION
snake is a display-based game which must be played on a CRT terminal. The object of the game is to make as much money as possible without
getting eaten by the snake. The -l and -w options allow you to specify the length and width of the field. By default the entire screen is
used. The -t option makes the game assume you are on a slow terminal.
You are represented on the screen by an I. The snake is 6 squares long and is represented by s's with an S at its head. The money is $, and
an exit is #. Your score is posted in the upper left hand corner.
You can move around using the same conventions as vi(1), the h, j, k, and l keys work, as do the arrow keys. Other possibilities include:
sefc These keys are like hjkl but form a directed pad around the d key.
HJKL These keys move you all the way in the indicated direction to the same row or column as the money. This does not let you jump away
from the snake, but rather saves you from having to type a key repeatedly. The snake still gets all his turns.
SEFC Likewise for the upper case versions on the left.
ATPB These keys move you to the four edges of the screen. Their position on the keyboard is the mnemonic, e.g. P is at the far right of
the keyboard.
x This lets you quit the game at any time.
p Points in a direction you might want to go.
w Space warp to get out of tight squeezes, at a price.
To earn money, move to the same square the money is on. A new $ will appear when you earn the current one. As you get richer, the snake
gets hungrier. To leave the game, move to the exit (#).
A record is kept of the personal best score of each player. Scores are only counted if you leave at the exit, getting eaten by the snake is
worth nothing.
As in pinball, matching the last digit of your score to the number which appears after the game is worth a bonus.
To see who wastes time playing snake, run snscore.
FILES
/var/games/snakerawscores database of personal bests
/var/games/snake.log log of games played
BUGS
When playing on a small screen, it's hard to tell when you hit the edge of the screen.
The scoring function takes into account the size of the screen. A perfect function to do this equitably has not been devised.
BSD
May 31, 1993 BSD