bash 환경설정 - 모든 유저를 한번에 설정하기

로그인 쉘을 위해 실행되는
시스템 전역 초기화 파일인 /etc/profile을 수정하면 모든 사용자에게 적용이 될것으로 예상된다.

debian 도움말에는
/etc/bash.bashrc가 존재하고 이녀석은 login shell
/etc/profile은 interactive shell에 적용된다고 되어있다.

그런데 login shell과 per-interative-shell의 차이가 멀까?

$ man bash OPTIONS        In  addition to the single-character shell options documented in the description of the set builtin command, bash        interprets the following options when it is invoked:        -c string If the -c option is present, then commands are read from string.  If  there  are  arguments  after  the                  string, they are assigned to the positional parameters, starting with $0.        -i        If the -i option is present, the shell is interactive.        -l        Make bash act as if it had been invoked as a login shell (see INVOCATION below). INVOCATION        A login shell is one whose first character of argument zero is a -, or one started with the --login option.        An interactive shell is one started without non-option arguments and without the -c option whose  standard  input        and  error  are both connected to terminals (as determined by isatty(3)), or one started with the -i option.  PS1        is set and $- includes i if bash is interactive, allowing a shell script or a startup file to test this state. FILES        /bin/bash               The bash executable        /etc/profile               The systemwide initialization file, executed for login shells        ~/.bash_profile               The personal initialization file, executed for login shells        ~/.bashrc               The individual per-interactive-shell startup file        ~/.bash_logout               The individual login shell cleanup file, executed when a login shell exits        ~/.inputrc               Individual readline initialization file [링크 : http://linux.die.net/man/1/bash]

[링크 : http://www.lq.org/questions/linux-general-1/difference-between-normal-shell-and-login-shell-14983/]

FC6에서 내용확인

$ cat /etc/bashrc  # /etc/bashrc  # System wide functions and aliases  # Environment stuff goes in /etc/profile  # By default, we want this to get set.  # Even for non-interactive, non-login shells.

$ cat /etc/profile # /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc

아무튼, interactive shell은 stdin와 stderr(잉? 왜 stdout이 아니지?)이 둘다 연결된 셸로
우리가 일반적으로 사용하는 녀석으로 생각된다.
결론은 login shell보다는 interactive shell용 환경변수 파일에 alias 등을 지정하는게 좋을듯 하다.