[moxie2020]

My command line:
screen -A -m -d -S valve ./srcds_run -game tf -ip 66.150.164.207 +maxplayers 32 -port 27015 -debug -nohltv +servercfgfile seattle_valve.cfg +map cp_dustbowl

Gdb definitely installed:
gdb is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.