init dev setup for linux

.gitignore

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+# Files to ignore when considering what GIT should commit.
+
+# Visual Studio 
+*.suo
+*.user
+*.sln.docstates
+*.obj
+*.pch
+*.tlog
+*.log
+*.scc
+*.exp
+*.ilk
+*.lastbuildstate
+vc100.pdb
+ipch
+*.sdf
+*.opensdf
+*.idb
+*.vcxproj
+*.sln
+
+# OSX/Linux build products
+*.mak
+*.mak.vpc_crc
+*.xcodeproj/
+obj*/
+!devtools/*.mak
+!utils/smdlexp/smdlexp.mak
+*.a
+*.a.dbg
+*.project
+
+# Specific Source build products
+client.pdb
+client.dll
+client.lib
+server.pdb
+server.dll
+server.lib
+
+client.so
+client.so.dbg
+server.so
+server.so.dbg
+server_srv.so
+server_srv.so.dbg
+
+client.dylib
+client.dylib.dSYM/
+server.dylib
+server.dylib.dSYM/
+
+# files generated by running a mod
+config.cfg
+
+# shader files
+*.tmp