Preface
Last night insomnia, because playing for three days, they have a certain sense of reflection, I have some concerns about their future, awake at night. But last night for their in-depth analysis is still very deep, deep to admire themselves why they could write so realistic interior monologue.
Do not impetuous, do not impetuous, just calm down, everything will be perfect in order to do a good job.
The ever-changing language, the only constant thought, never thought beyond the language as a carrier exists.
When I see a drop of water, I do not want to just know that it can be used to water the flowers, this relative, I hope to understand the movement of water molecules which seemingly erratic. There is such a saying, all things there is a law, why would you think something is not present law it? Because of my ignorance.
Content
11.4 Bash Shell operating environment
11.4.1 path and command search order
- A relative / absolute path to execute the command, for example, "bin / ls", or "./ls";
- By the alias locate the command to execute;
- Built-in bash (BUILTIN) command to execute;
- The first command found by the order of $ PATH variable to perform;
11.4.3 bash environment configuration file
- login与non-login shell
login shell: the need to complete the login process when acquiring bash, called the login shell for example, you have to log in by the tty1-tty6, you need to enter a user account and password, bash acquired at the time called "login shell. "
non-the Login shell: bash interface method does not need to get a move repeated login.
Feel their relationship is purely a containment relationship. There are books on birds brother of a picture actually talking about quite clear that
the two are called the relationship include, non-login shell is bash achieved only normal operation, and login shell on this basis, it is to add more users with rich colors.
Daily Task
Eventually, you'll get old, and I will be crowned king.
OK, sleep, starve.