When running Half-Life using hl.sh (cant get it working through steam), I get this:

...
scandir failed:/home/lzap/.local/share/Steam/SteamApps/common/Half-Life/valve_hd/SAVE
scandir failed:/home/lzap/.local/share/Steam/SteamApps/common/Half-Life/platform/SAVE
ARB Multitexture extensions found.

8 texture units.  Detail texture supported.

[0207/232429:ERROR:resource_bundle.cc(411)] Failed to load /home/lzap/.local/share/Steam/SteamApps/common/Half-Life/cef_gtk.pak
Some features may not be available.
[0207/232429:WARNING:proxy_service.cc(646)] PAC support disabled because there is no system implementation
ILocalize::AddFile() failed to load file "resource/hl_l_english.txt".
Platform config directory: platform/config
0:Initializing platform...
Server module initialized.

World module initialized.

STEAM Auth Server

AppActive: active
AppActive: active
LoadLibrary failed on /home/lzap/.local/share/Steam/SteamApps/common/Half-Life/hl_l/dlls/hl.so: /home/lzap/.local/share/Steam/SteamApps/common/Half-Life/hl_l/dlls/hl.so: cannot open shared object file: No such file or directory

Host_Error: Couldn't get DLL API from /home/lzap/.local/share/Steam/SteamApps/common/Half-Life/hl_l/dlls/hl.so!

Uploading dump (in-process) [proxy '']
/tmp/dumps/crash_20130207232436_1.dmp

I have found a workaround:

ln -s valve hl_l

Then it works!