问题
does tcl have a standard way of doing NSS lookups (getpwnam, setpwent,...)
回答1:
Tcl doesn't expose those as APIs (it doesn't really use them internally either) but the TclX extension package does support exactly what you want I believe. For example:
package require TclX
set uid [id convert user $tcl_platform(user)]
puts "Your userid is $uid and you are a member of these groups: [id groups]"
If you're using ActiveTcl, you've definitely got the TclX package available (either already installed or available from the teapot repository).
来源：https://stackoverflow.com/questions/3791203/how-to-do-getpwnam-getpwuid-etc-in-tcl