I am a new LINUX user ( from MS window). I tried to compile simple c program mypgm.c.( hellow world like) gcc mypgm.c problem is : bash: stdio.h : not found error message stdio.h file is in the /usr/include Do I have to setup something for gcc compiler ? %PATH does not include /usr/include now. My LINUX system is Debian 2.0 Please help me to solve this my first LINUX problem ! Thanks.