Utility: Linux Admining

[Gandalf Parker]

OK all of you Linux people. Have fun with THIS one. This is my bl_game.sh for creating small blitz games.
Code:

---

#!/bin/bash



OP1=`echo $RANDOM % 79|bc`

OP2=`echo $RANDOM % 79|bc`

OP3=`echo $RANDOM % 79|bc`

for OP in $OP1 $OP2 $OP3

do

 if [ $OP -eq 25 ]

   then $OP=0

 fi

done



PORT=7777

PTtest=1

 until [ $PTtest -eq 0 ]; do

   PORT=`echo $RANDOM % 1000 + 8000|bc`

   PTtest=`netstat -an|grep -c :$PORT`

 done



MPASS=`makepasswd`

WURDnum=`echo $RANDOM$RANDOM % 118614 |bc`

WURD=`egrep "^....$|^.....$|^......$|^.......$|^........$|^....  .....$" \

      /usr/share/dict/words|head -$WURDnum|tail -1`

GAME=bl_$WURD

MAP=eye.map

DIR=~/dominions3/savedgames/$GAME

ERA=$1

if [ -z "$1" ]

then

   ERA=`echo $RANDOM % 3 + 1 |bc`

fi



DESC=" era $ERA game $GAME on port $PORT "

echo $DESC

#with $OP1 $OP2 $OP3

# --normai $OP1 --normai $OP2 --normai $OP3 \



dom3 -T --makemap $GAME --mapaa --mapsize 640 480 --mapprov 30

MAP=$GAME.map

echo $DESC

mkdir $DIR



nohup dom3  -g $GAME --port $PORT -ST --statfile --scoredump \

 --preexec $DIR/pre.sh  --postexec $DIR/post.sh \

 --era $ERA --indepstr 6 --hofsize 15 --magicsites 65 \

 --renaming --mapfile $MAP --masterpass $MPASS \

 -q --hours 24 >$DIR/game.log 2>$DIR/game.err &



echo $DESC >>BLITZ_games.txt



PID=`ps a | grep $GAME | grep dom3 | cut -d" " -f2`

echo "kill -9 "$PID >$DIR/kill.sh

echo $MPASS >$DIR/master.txt

ls -blart /tmp/dominion* |tail -1 >$DIR/tmp.sh

echo " " >$DIR/pre.sh

echo " " >$DIR/post.sh



chmod +x $DIR/*.sh



# to stop the game immeadaitely after start

# unremark the next line

#cp $DIR/kill.sh $DIR/post.sh



echo "mv ~/dominions3/maps/$GAME.* $DIR/" >$DIR/pre.sh

echo "cp /dev/null $DIR/pre.sh" >>$DIR/pre.sh



echo "cp $DIR/game.log $DIR/~game.log" >$DIR/post.sh

echo "cp /dev/null $DIR/game.log" >>$DIR/post.sh

---

[Gandalf Parker]

Some highlists on that blitz script...

It selects random opponents (presently rem'd out in its use)

It selects a random port and it tests to see if that port is in use

It creates a random password and uses that as the master password for the game

It chooses a random word from the system spelling dictionary and uses that as the game name (some very interesting results have come from that)

It chooses a random era

It creates a random map for the game of 640x480 and 30 provinces. Suitable for a 2 or 3 player blitz game

It creates a game log and a game error file

It adds the games description (game name, port, settings) to a BLITZ_games.txt so that if I whip off 10 quick new games I can just upload that text to announce them

It creates a quick-kill shell in the games directory

It creates pre and post shells.

Sets up the pre shell to move the blitz map to the game directory once the game starts. That saves on cleanup of the games later.

Sets up the post shell to rotate the logs which can get very large depending on how many d's you use on the games command line

Any questions?

[Neophyte]

Does the IP address need to be specified (in the script) if one is IP forwarding through a firewall? If so, the address needs to be the address that remote clients will be using, correct? I hope I got the terminology right.

Thank's!

[Gandalf Parker]

I understand your question but Im afraid that I dont know the answer. I dont know of any way to tell the game which IP to run on. I think that when hosting, the game only concerns itself with port. So if the clients address hits the firewall, and the firewall forwards it to the right machine, things should be transparent to the user. But Im afraid thats just guesswork on my part.

By the way, Dom3 handles both IP or domain name for the server. Thats something I have tested quite abit. So Im able to send people to either 63.199.8.158 OR dom3minions.com for a game. (also 63.199.8.157 host.dom3minions.com which I use for blitz games)

[Neophyte]

Upon reflection, the whole IP thing is probably a switch issue not a computer issue anyhow - i.e. addyXZ internally is in all ways equivalent to addyYZ externally with IP forwarding setup. Should have thought of this last night, but it was late, and my networking knowledge is sporadic.

Thank's for the reply - I'll test out your scripts once Dom3 shows up hopefully next week.

[Gandalf Parker]

PbEM scripting has been ironed out. The key is two switches which will start a game hosting automatically. The thread where this was discussed fully is at
http://www.shrapnelcommunity.com/thr...270&Forum=f187

The switches are:
--uploadtime
--uploadmaxp

[Gandalf Parker]

Im rather proud of this altho it will make others cringe at its ugliness. I wanted a way for people to check which games need players. Doing an "ls" of the game directory from a CGI was easy enough but I realized that instead of using "ls" of the directorys as fact that the game exists, I should use the "ps". Then starting a game will automatically cause it to show, and if a game finishes or crashes then it will automatically not appear. I also arranged for it to pull the port from the ps display and show that.
http://host.dom3minions.com/bin/blitz_chk.cgi

Code:

---

#!/bin/bash

echo "Content-type: text/html"

echo -e "\n\n"



echo "<H2><b>Dominions 3 Blitz games</b></H2>"

echo "These are 2-player games on tiny maps<br>"

echo '<a href="http://host.dom3minions.com/how-to.html">how to join a game</a><b

r><br>'





cd /home/dom3/dominions3/savedgames

 ps ax |grep dom3|grep bl_ | \

while read n n n n n n game n port n n n n n n n n era n

do

 echo "era $era game <b>$game</b> on port <b>$port</b><br>"

  cd $game

  for fyle in `ls -1 *.2h`

    do

      echo $fyle "<br>"

    done

  cd /home/dom3/dominions3/savedgames

 echo "<br>"

done

---

[Tals]

Great thread GP. I'm keen to run it from the text line and not have it running unattended - i.e always in a window. Is there a way of stopping it refreshing once a minute?

Also are there any commands you can give it whilst in text mode?

Tals

[Gandalf Parker]

Sorry that I didnt notice this.

There is no way to stop it refreshing. I tend to run it to a file then use a file viewer.

As far as I know there are no commands that will work on it when its running text mode. I prefer to script the starts of all of my games since any changes or updates involve having to stop the game and then restart it. I much prefer edting the script and restarting it than trying to type it all out again. Especially if you dont remember some of it.