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As a security and auditing feature, sudo may be configured to log each command run. When a user attempts to invoke sudo without being listed in the configuration file, an exception indication is presented to the user indicating that the attempt has been recorded. If configured, the root user will be alerted via mail. By default, an entry is ...
It is often recommended that root is never used as a normal user account, [6] [7] since simple typographical errors in entering commands can cause major damage to the system. Instead, a normal user account should be used, and then either the su (substitute user) or sudo (substitute user do) command is used.
The command su, including the Unix permissions system and the setuid system call, was part of Version 1 Unix.Encrypted passwords appeared in Version 3. [5] The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities.
"foo" is not recognized as an internal or external command, operable program or batch file. Some early Unix shells produced the equally cryptic " foo: no such file or directory " again accurately describing what is wrong but confusing users.
This use of slash can still be found in the command interface under Microsoft Windows. By contrast, Unix uses the hyphen-minus character ("-") as a command-line switch prefix. When directory support was added to MS-DOS in version 2.0, "/" was kept as the switch prefix character for backward compatibility .
Pro Windows Subsystem for Linux (WSL): Powerful Tools and Practices for Cross-Platform Development and Collaboration. Apress. ISBN 978-1484268728. Leeks, Stuart (2020). Windows Subsystem for Linux 2 (WSL 2) Tips, Tricks, and Techniques: Maximise productivity of your Windows 10 development machine with custom workflows and configurations. Packt ...
SYS will also copy the command line shell (COMMAND.COM) into the root directory. [6] The command can be applied to hard drives and floppy disks to repair or create a boot sector. Although an article on Microsoft's website says the SYS command was introduced in MS-DOS version 2.0, [7] this is incorrect.
In all versions of Windows 9x except ME, it is also possible to load Windows by booting to a DOS prompt and typing "win". There are some command line switches that can be used with the WIN command: with the /D switch, Windows boots to safe mode , and with the /D:n switch, Windows boots to safe mode with networking.