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In computing, Verbose mode is an option available in many computer operating systems and programming languages that provides additional details as to what the computer is doing and what drivers and software it is loading during startup or in programming it would produce detailed output for diagnostic purposes thus makes a program easier to debug.
Some commands are internal—built into COMMAND.COM; others are external commands stored on disk. When the user types a line of text at the operating system command prompt, COMMAND.COM will parse the line and attempt to match a command name to a built-in command or to the name of an executable program file or batch file on disk.
-v, --verbose verbose mode-a, --all Display all files. Without this option, only files accessed by at least one process are shown.-m, --mount Same as -c. Treat all following path names as files on a mounted file system or block device. All processes accessing files on that file system are listed.
On UNIX implementations derived from AT&T UNIX, cp, ln and mv are implemented as a single program with hard-linked binaries. The behavior is selected from the path name argv [0] . This is a common technique by which closely related commands that have been packaged as a unit allow the user to specify the particular course of the intended action.
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This is a list of commands from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. GNU Core Utilities include basic file, shell and text manipulation utilities. Coreutils includes all of the basic command-line tools that are expected in a POSIX system.
A rule of thumb in determining if a reply fits into the 4xx or the 5xx (Permanent Negative) category is that replies are 4xx if the commands can be repeated without any change in command form or in properties of the User or Server (e.g., the command is spelled the same with the same arguments used; the user does not change his file access or ...
The commands can be used to ignore the success or failure of a sequence of other commands, as in the example: make … && false Setting a user's login shell to false , in /etc/passwd , effectively denies them access to an interactive shell, but their account may still be valid for other services, such as FTP .