via Software Center Server for Teeworlds; an online multi-player platform 2D shooter, which had the description "teeworlds-server".
The terminal is recognizing the command teeworlds-server. Readers, note that it has a dash instead of an underscore.
I'm trying to get it running. This was my last attempt.
mainuser@Venn:~$ cd ~/Desktop
mainuser@Venn:~/Desktop$ teeworlds-server -f "teeworlds_srv -f srv.cfg"
[52a0aeab][engine]: running on unix-linux-ia32
[52a0aeab][engine]: arch is little endian
[52a0aeab][storage]: couldn't open storage.cfg
[52a0aeab][storage]: using standard paths
[52a0aeab][storage]: added path '$USERDIR' ('/home/mainuser/.teeworlds')
[52a0aeab][storage]: added path '$DATADIR' ('/usr/share/games/teeworlds/data')
[52a0aeab][storage]: added path '$CURRENTDIR' ('/home/mainuser/Desktop')
[52a0aeab][console]: failed to open 'autoexec.cfg'
[52a0aeab][console]: executing 'teeworlds_srv -f srv.cfg'
[52a0aeab][Console]: No such command: rcon_password.
[52a0aeab][Console]: No such command: masterserver.
[52a0aeab][server]: starting...
[52a0aeab][datafile]: loading. filename='maps/pit.map'
[52a0aeab][datafile]: allocsize=1016
[52a0aeab][datafile]: readsize=900
[52a0aeab][datafile]: swaplen=920
[52a0aeab][datafile]: item_size=716
[52a0aeab][datafile]: loading done. datafile='maps/pit.map'
[52a0aeab][server]: maps/pit.map crc is ecd0f851
[52a0aeab][server]: server name is 'Test'
[52a0aeab][datafile]: loading data index=7 size=3228 uncompressed=129500
[52a0aeab][server]: version 0.6 626fce9a778df4d4
[52a0aeab][engine/mastersrv]: refreshing master server addresses
[52a0aeab][register]: refreshing ip addresses
[52a0aeab][engine/mastersrv]: saving addresses
[52a0aeab][register]: fetching server counts
[52a0aeab][register]: chose 'master2.teeworlds.com' as master, sending heartbeats
[52a0aeac][game]: start round type='DM' teamplay='0'
[52a0aead][register]: no firewall/nat problems detected
[52a0aead][register]: no firewall/nat problems detected
[52a0aead][register]: server registered
It stalls after giving that last output line, but it hasn't completed the operation.
In the servers selection screen, I have turned off all the requirements for standard map, standard game type, etc. I will look for it one more time, but I saw no server with my map "pit".