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The default value of kernel.sysrq in distributions such as Ubuntu and Debian remains 176 [citation needed] (allowing the sync, unmount, and reboot functions) and 438 [10] (allowing the same functions plus loglevel, unraw, and nice-all-RT-tasks) respectively.
pwdx — Print working directory of processes listed on command line. readahead — Preload files into disk cache. readlink — Show what symlink points to. realpath — Display the canonical absolute pathname; reboot — Restart, halt or powerdown the system. renice — set nice values of running processes; reset — Reset the terminal.
JP Software command-line processors provide user-configurable colorization of file and directory names in directory listings based on their file extension and/or attributes through an optionally defined %COLORDIR% environment variable. For the Unix/Linux shells, this is a feature of the ls command and the terminal.
On a Linux system, the boot partition (/boot) may be encrypted if the bootloader itself supports LUKS (e.g. GRUB). This is undertaken to prevent tampering with the Linux kernel. However, the first stage bootloader or an EFI system partition cannot be encrypted (see Full disk encryption#The boot key problem). [14]
An initramfs-style boot is similar, but not identical to the described initrd boot. At this point, with interrupts enabled, the scheduler can take control of the overall management of the system, to provide pre-emptive multi-tasking, and the init process is left to continue booting the user environment in user space.
The pushd ('push directory') command saves the current working directory to the stack then changes the working directory to the new path input by the user. If pushd is not provided with a path argument , in Unix it instead swaps the top two directories on the stack, which can be used to toggle between two directories.
sudo (/ s uː d uː / [4]) is a program for Unix-like computer operating systems that enables users to run programs with the security privileges of another user, by default the superuser. [5]
The socket is located in this directory. There is a procedure that may prevent malware from using the ssh-agent socket. If the ssh-add -c option is set when the keys are imported into the ssh-agent , then the agent requests a confirmation from the user using the program specified by the SSH_ASKPASS environment variable , whenever ssh tries to ...