linux-commands

The English spelling of bc is "Binary Calculator", which is a calculator language that supports arbitrary precision interactive execution. Bash has built-in support for the four arithmeti...

rmmod is short for "remove module", and the rmmod command is used to delete a module. Execute the rmmod command to delete unnecessary modules. The core of the Linux operating system has m...

The dirs command is used to display the stack records in the Shell directory. When no option is added, all directories in the current Shell command stack are displayed. When displaying, t...

The hash command is responsible for displaying and clearing the hash table that the system prefers to query when the command is running. When the hash command is executed without speci...

The shopt command can set the switch values ​​of the variables that control the behavior of the Shell to achieve the purpose of controlling the behavior of the Shell. When executing t...

The EXTENDED_HISTORY environment variable affects the execution of the fc command. If the variable is set to ON, the time is recorded, otherwise the time is not recorded. Syntax: fc [parameter] Co...

The pushed command is used to add a directory to the stack, add a record to the top of the directory stack, and switch to the directory. If no parameters are added, the two directories at...

Used to delete records from the Shell directory stack. If no option is added, the popd command deletes the record at the top of the Shell directory stack first, and then switches the curr...

The jobs command is mainly used to display the list of tasks in the system and their running status. This command can display the task number and its corresponding process number. The ...

The declare command is used to define shell variables, but the variables defined by declare can only work in the current shell environment, and will be invalid after switching the shell e...