Set path (global variable) in Mac)

1 first, check the path command: $ Path 2 how to set the path command: Echo "Export Path = xxxxxx: $ path" >> ~ /. Bash_profile explanation: Print "Export Path = xxxxxx: $ path" ~ /. Bash_profile. 3. UNIX knowledge supplement :~ /. Bash_profile description Mac and Linux terminals are generally parsed using bash. After bash finishes reading the/etc/profile of the overall environment variable and calls other configuration files, it then reads the User-Defined personal configuration file. Bash reads three types of files :~ /. Bash_profile ~ /. Bash_login ~ /. Profile is actually one of the files read-only when Bash is restarted, and the read order is in the above Order. That is to say, reading bash_profile will not be followed by reading it. If bash_profile does not exist, the following will be available. Let's take a look at what is in bash_profile: Command: CAT ~ /. Bash_profile the last time you restart your terminal, there will be the global variable you just set. [Updated on February 28,] The most intuitive method is Cd ~ Open. bash_profile will be used directly at this time ProgramOpening this configuration file is much simpler and more intuitive than setting in the terminal. Note that the variables in the configuration file will be overwritten. For example, if export Path = 1 Export Path = 2, then the next 2 will overwrite the previous 1.