cleaning up $PATH in bash [closed]

Answer 1

You shouldn't let some random sysadmin decide what's in your PATH anyway, you should set it to the PATH you need. You begin with

# POSIX way of getting the system's PATH to POSIX tools:
PATH=$(getconf PATH)   # Or /usr/bin/getconf PATH.

followed by whatever you require in addition, e.g.

PATH="$PATH:/usr/local/bin"
PATH="$PATH:/usr/local/sbin"
PATH="$PATH:$HOME/bin"

and put this in your shell's .profile or equivalent. Note that you do not want . or world-writable directories in your PATH for security reasons.