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If one or more specified commands is nonexistent or not executable. Remove regular empty file dtxt. Binary Search Data Structure Algorithm Geekboots Data Structures Data Science Learning Algorithm Which command in Linux is a command which is used to locate the executable file associated with the given command by searching it in the path environment variable. Essential algorithms examples . If an invalid option is specified. Rm -i dtxt rm. Like in cp the -i option makes the command ask the user for confirmation before removing each file you have to press y for confirm deletion any other key leaves the file un-deleted. Y ls etxt. If all specified commands are found and executable. Rm prompts for confirmation removal if a file is write protected. It has 3 return status as follows.