$ sudo mkfs device in .NET Generating ean13+2 in .NET $ sudo mkfs device

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$ sudo mkfs device use .net vs 2010 ean13+5 generation togenerate gs1-13 in .net QR Code ISO speicification mkfs where device is the na me of the device (/dev/hda2, /dev/sdb1, /dev/fd0, and so on) you want to make a filesystem on. Use the t option to specify a type of filesystem. As an example, the following command creates an ext4 filesystem on /dev/sda2:.

$ sudo mkfs -t ext4 /dev/sda2 An example using mkfs to create a filesystem on a floppy diskette appears on page 509. ping Sends packets to a rem ote system. This utility determines whether you can reach a remote system through the network and tells you how long it takes to exchange messages with the remote system. Refer to ping: Tests a Network Connection on page 393.

Resets terminal characteristics. The value of the TERM environment variable (page 1106) determines how the screen will be reset. The screen is cleared, the kill and interrupt characters are set to their default values, and character echo is turned on.

When given from a graphical terminal emulator, this command also changes the size of the window to its default. The reset utility is useful for restoring the screen to. reset (link to tset). Textual System Administration Utilities 459 a sane state after it has been corrupted. In this sense, it is similar to an stty sane command. setserial Gets and sets serial p Visual Studio .NET ean13+2 ort information. When run with root privileges, this utility can configure a serial port.

The following command sets the input address of /dev/ttys0 to 0x100, the interrupt (IRQ) to 5, and the baud rate to 115,000 baud:. $ sudo setserial /dev/ttys0 port 0x100 irq 5 spd_vhi You can also check the EAN-13 Supplement 5 for .NET configuration of a serial port with setserial:. $ sudo setserial /dev/ttys0 /dev/ttyS0, UART: 16550A, Port: 0x0100, IRQ: 5, Flags: spd_vhi Normally the system ca Visual Studio .NET EAN 13 lls setserial as it is booting if a serial port needs custom configuration. This utility is part of the setserial package.

. stat Displays information a .net vs 2010 EAN13 bout a file or filesystem. Giving the f (filesystem) option followed by the mount point for a filesystem displays information about the filesystem, including the maximum number of characters allowed in a filename (Namelen in the following example).

See the stat man page for more information.. $ stat -f /dev/sda Fil e: "/dev/sda" ID: 0 Namelen: 255 Type: tmpfs Block size: 4096 Fundamental block size: 4096 Blocks: Total: 127271 Free: 127207 Available: 127207 Inodes: Total: 127271 Free: 126600. umask A shell builtin that s pecifies the mask the system uses to set up access permissions when you create a file. A umask command has the following format: umask [mask] where mask is a three-digit octal number or a symbolic value such as you would use with chmod (page 216). The mask specifies the permissions that are not allowed.

When mask is an octal number, the digits correspond to the permissions for the owner of the file, members of the group the file is associated with, and everyone else. Because mask specifies the permissions that are not allowed, the system subtracts each of the three digits from 7 when you create a file. The result is three octal numbers that specify the access permissions for the file (the numbers you would use with chmod).

A mask that you specify using symbolic values specifies the permissions that are allowed. Most utilities and applications do not attempt to create files with execute permissions, regardless of the value of mask; they assume you do not want an executable file. As a result, when a utility or application (such as touch) creates a file, the system subtracts each of the three digits in mask from 6.

An exception is mkdir, which assumes you want the execute (access in the case of a directory) bit set. The following commands set the file-creation mask and display the mask and its effect when you create a file and a directory. The mask of 022, when subtracted from 666 or 777, gives permissions of 644 (rw r r ) for a file and 755 (rwxr xr x) for a directory.

. 460 11 System Administration: Core Concepts $ umask 022 $ umask 00 22 $ touch afile $ mkdir adirectory $ ls -ld afile adirectory drwxr-xr-x 2 sam sam 4096 2010-05-02 23:57 adirectory -rw-r--r-- 1 sam sam 0 2010-05-02 23:57 afile. The next example sets .NET ean13 the same mask using symbolic values. The S option displays the mask symbolically:.

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