Shell all built-in commands

Reference from Linux command Daquan

To see if the shell command is a shell built-in command, use the type to determine:

$ Type cd CD is a shell builtin $ Type ping Ping is/bin/ping

All built-in commands are as follows:

Sh

The shell command interpreter trap specifies the action to be taken after receiving the signal let's simple calculator seq to specify the increment to print the number from the first number to the Mantissa Tput Initialize and manipulate the terminal session through the Terminfo database apropos in Whatis The lookup string in the database sets the shell attribute and the shell variable command call and executes the specified command DRIs displays and empties the contents of the directory Stack FC modifies the history command and performs the bind display or sets the keyboard key associated with the function readonly define read-only shell variable or function re The ad reads the variable value from the keyboard bg is used to put the job into the background to run the Ulimit Control Shell program resource enable start or close shell built-in command declare declare or show shell variable Wait wait for the process to return BUILTIN execute Shell internal command shopt display and set The shell Operation option Exit exits the current Shelljobs display task List and task status in Linux help display the history command logout exit the currently logged on Shellexport setting or display the system environment variable exec call and execute the specified command E NV displays an environment variable that already exists in the system unset delete the specified shell variable or function kill delete the program or work in execution Unalias delete the alias set by alias type displays the type of the specified command FG puts the background job into the foreground terminal run alias is used to set the aliases of the instruction the Echo output specifies String or variable

Shell all built-in commands