Posts

Showing posts from April 7, 2019

Section (United States land surveying)

Image
Sectioning a township (36 sections). Perfectly square full sections of farmland cover Central Indiana. Satellite image of crops growing in Kansas, mainly using center pivot irrigation. The primary grid pattern is of quarter sections ( 1 ⁄ 2  mi ×  1 ⁄ 2  mi (800 m × 800 m)). In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid. [1] The legal description of a tract of land under the PLSS includes the name of the state, name of the county, township number, range number, section number, and portion of a section. Sections are customarily surveyed into smaller squares by repeated halving and quartering. A quarter section is 160 acres (65 ha) and a "quarter-quarter section" is 40 acres (16 ha). In 1832 the smallest area of land that could be ...

How to get the position of LUKS header by `bgrep`

Image
Clash Royale CLAN TAG #URR8PPP .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0; 1 I tried to get the position of LUKS header: grep -a -b -P --only-matching 'LUKSxbaxbe' /dev/sdb It is out of memory. Some sugest me use 'bgrep' instead, but I don't how to make it work. bgrep -A 20 'LUKSxbaxbe' /dev/sda ./bgrep: invalid 2-hex-digit byte value: 'LU' So how to make this work? grep luks share | improve this question asked Mar 10 at 11:10 Maggicmuojet Maggicmuojet 11 3 add a comment  |  1 I tried to get the position of LUKS header: grep -a -b -P --only-matching 'LUKSxbaxbe' /dev/sdb It is out of memory. Some sugest me use 'bgrep' instead, but I don't how to make it work. bgrep -A 20 'LUKSxbaxbe' /dev/sda ./bgrep: invalid 2-hex-digit byte value: 'LU' So how to make this w...