database(1grass) Grass User's Manual database(1grass)GRASS GIS 6.4.2 Reference Manual
Geographic Resources Analysis Support System, commonly referred to as GRASS, is a <a href="http://en.wikipedia.org/wiki/Geographic_informa-
tion_system">Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/maps produc-
tion, spatial modeling, and visualization. GRASS is currently used in academic and commercial settings around the world, as well as by many
governmental agencies and environmental consulting companies.
This reference manual details the use of modules distributed with Geographic Resources Analysis Support System (GRASS), an open source (GNU
GPL'ed), image processing and geographic information system (GIS). Go back to help overview
| db.columns | List all columns for a given table.
| db.connect | Prints/sets general DB connection for current mapset and exits.
| db.copy | Copy a table.
| db.describe | Describes a table in detail.
| db.drivers | Lists all database drivers.
| db.dropcol | Drops a column from selected attribute table
| db.droptable | Drops an attribute table.
| db.execute | Executes any SQL statement.
| db.in.ogr | Imports attribute tables in various formats.
| db.login | Sets user/password for driver/database.
| db.out.ogr | Exports attribute tables into various formats.
| db.select | Selects data from attribute table (performs SQL query statement(s)).
| db.tables | Lists all tables for a given database.
| db.test | Test database driver, database must exist and set by db.connect.
(C) 2003-2011 GRASS Development Team
I have a huge matrix file containing some 1.5 million rows and 6000 columns. The matrix looks something like this:
1 2 3
4 5 6
7 8 9
3 4 5
I want to add all the numbers in the columns of this matrix and display the result to my stdout. This means that the numbers in the first column are:
... (2 Replies)
Just trying to get to grips with sed and awk for some reporting for work and I need some assistance:
I have a file that lists policy names on the first line and then on the second line whether the policy is active or not.
Policy Name: Policy1
Policy... (8 Replies)
version info :
vi availabe with RHEL 5.4
I have a text file with 10,000 lines. I want to copy lines from 5000th line to 7000th and redirect to a file. Any idea how I can do this?
The above scenario is just an example. In my actual requirement, the file has 14 million lines and I want... (9 Replies)
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
I couldn't find an actual introduction thread, so I decided to just put this here.
I go by d0wngrade online. I have been programming in multiple languages for about 15+ years. I started with standard web design languages like HTML and CSS, but I then advanced from design to development... (2 Replies)
The first active code line in AudioScope.sh is set -u .
This causes a complete exit if a variable is used/found but has not been allocated at the start of the program.
However, apart from writing code to do the task, is there a switch to to check which variables have been... (17 Replies)
In thread https://www.unix.com/shell-programming-and-scripting/267833-grouping-counting.html rovf and I had a mini-discussion on grep and awk.
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# @(#) s2 Demonstrate group... (1 Reply)
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# file with header names of required columns in required order
# read contents... (11 Replies)
For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this:
If you don't have gcc on your system:
0. Download and install the Command Line Tools for Xcode package from Sign In - Apple *
1. Download the dash... (2 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
I have data of an excel files as given below,
org1_1 1 1 2.5 100
org1_2 1 2 5.5 98
org1_3 1 3 7.2 88
org2_1 1 1 2.5 100
org2_2 1 2 5.5 56
org2_3 1 3 7.2 70
I have multiple excel files as above shown.
I have to copy column 1, column 4 and paste into a new excel file as... (26 Replies)
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While the "current generation... (9 Replies)
Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default.
Many tricky terminal escape codes are not catered for so I had to create workarounds.
One thing I searched for was this:
Passing perl variable to shell command
AND, @Neo this was... (15 Replies)