When I go to powershell, symbol "位" changed to "?".

You can fire up the powershell directly by using ctr-shift-2 or ctrl-t.
The font you've set in the cmd window doesn't have a lambda symbol. You'll have to either use a different symbol or font with it in.
ok, thank you. I just thought that lambda was displayed everywhere (cmd - powershell and e.c.t)
Probably a noob question. When I want to change "位" to "$", how can I get it? :-)
@bravelee I also wanted to have this instead of the Lambda, I did some digging and found a Lua script in CMDER\config\
prompt.lua script in the path above in an editor.位 with $ and save, have fun.@f3yisayo I didn't see the prompt.lua script in the latest version, is there another way to replace 位 with $? I like the tool but it looks weird to type something after 位.
@haoxi911 I found a new way, go to ~cmder\vendor, open clink.lua, line 44, change to (lambda = "$") and save. Done.
@Ov4ts It works great. Thank You!
@Ov4ts What you say make cmd work, but for the powershell, it's still 位
to change the 位 replace it in the ff files:
cmder\vendor\clink.lua
cmder\vendor\profile.ps1
cmder\vendor\git-for-windows\etc\profile.d\git-prompt.sh
Most helpful comment
@haoxi911 I found a new way, go to ~cmder\vendor, open clink.lua, line 44, change to (lambda = "$") and save. Done.