Database is an organized collection of data.

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15
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11answers
14k views

Grep huge number of patterns from huge file

I have a file that's growing about 200,000 lines a day, and it is all formed with blocks of three lines as such: 1358726575123 # key Joseph Brunner # name carpenter # job ...
10
votes
4answers
870 views

Standard key/value datastore for unix

I know about the key/value libraries for unix (berkeleydb, gdbm, redis... ). But before I start coding, I wonder if there is a standard tool for unix that would allow me to perform the following ...
5
votes
1answer
1k views

Does quiesce exist for Linux?

Quiescing a file system allows you to make a backup of the database while it is still running and other programs and their data as well. The application generally needs to be notified of the quiesce ...
4
votes
2answers
328 views

Databases for embedded Linux?

I need to choose a database for an application on an embedded linux platform. Any suggestions on which databases are typically used with embedded linux? Please let me know. Regards Radha.
4
votes
1answer
305 views

unixODBC documentation / manpage?

Just wondering if there is any official documentation for unixODBC, e.g. how the configuration files have to look like and what parameters they expect? (I am using only a shell, no GUI) Even ...
4
votes
2answers
513 views

Data extraction of entire DB on SCO Openserver 6

Firstly apologies if this question seems like a wall of text, I can't think of a way to format it. I have a machine with valuable data on (circa 1995), the machine is running UNIX (SCO OpenServer 6) ...
4
votes
0answers
60 views

Does anyone actually use and benefit from transparent huge pages?

I've been struggling with transparent huge pages performance issues of late, and noticed many database systems recommend turning it off. I am talking Oracle, Postgresql, MySQL, Cassandra, NuoDB, ...
3
votes
1answer
6k views

Where does MySQL store its databases on Debian?

Our system crashed and we're trying to recover our data. The disc is fine, but the OS is gone, so I'm trying to get at the actual MySQL database files. Does anybody know where to look for them in a ...
3
votes
2answers
796 views

Simple shell script needed to move database files

I am using MySQL on Ubuntu machine. I need to physically move around the database files under /var/lib/mysql/ (this is where all the databases directories are located). Say I have two databases, ...
3
votes
1answer
26 views

centralized Address/phone book able to sync with thunderbird

In my office we are looking for a service able to store and manage all the phone numbers and adresses we have and capable of synchronize the database with clients (e.g. thunderbird) on personal ...
3
votes
2answers
88 views

Technology / program selection for picture viewing software

I want to learn some Binux usage and/or programming skills and provide an easy to use browser based picture gallery on my local home network. My idea is to have a server machine, that is the Linux ...
2
votes
3answers
2k views

Query Firefox password database

Braiam said that Firefox stores the password data for login websites in ~/.mozilla/firefox/key3.db and ~/.mozilla/firefox/signons.sqlite files. These files can be read with some sqlite editor. I ...
2
votes
2answers
5k views

cronjob for automatic DB backup to date prefixed file

I am using the latest Linux Mint. I was wondering if it's possible to create a special cronjob for a database backup. In my /etc/cronjob file I have the following code: # Minute Hour Day of ...
2
votes
2answers
6k views

Can I copy a MySQL database by copying the files? What do the files contain exactly?

I am using MySQL database and using an Ubuntu Linux machine. My database named db_test , I notice that under path /var/lib/mysql/db_test ,there are files suffix with .frm, .MYD, .MYI like following: ...
2
votes
1answer
197 views

How to extract single value from single line tuples?

I have a dump file of a database in the following form ('value1','value2',value3','value4'),('value1','value2',value3','value4'),... I want first to have each tuple in a single line and next i ...
2
votes
1answer
32 views

Option --skip-slave-start Not Working with Systemctl

I just started with centos 7. I'm trying to get replication working and am attempting to start mysql without starting the slave (so that I can set the pointers as to where it's supposed to resume ...
2
votes
1answer
44 views

Ways to store data for command line API

I am developing an API in Unix environment for virtual machines. I have to store some information in a table about virtual machines. Currently I am using python dictionary of virtual machine objects ...
2
votes
2answers
54 views

What is best and secure way to save application settings?

Let's say I have an application which has plugins, daemons, etc. Now It has to save its settings and plugins settings as well as too. Most of all applications use users home folder for it but it is ...
2
votes
1answer
206 views

mysql restoration process takes longer time

I have a Ubuntu 8.04 machine which has around 300 GB size mysql databases. I have dumped all the databases using the mysqldump command as below. mysqldump -u root -p --all-databases > file.sql ...
2
votes
3answers
256 views

Any programs suitable for making a database over disk-content?

I have quite a lot of external hard-drives, and often have a hard time finding what I'm looking for - not to mention not storing the same file several times on different drives or finding free space ...
2
votes
1answer
58 views

XML command line tool postgres

I have an XML files to read and load into database daily at night (cron) So i planed to do this in a batch. Is there any command line tool to : 1. Create a postgres schema using an XSD file? 2. ...
2
votes
2answers
520 views

Import single rows from SQLite to MySQL?

I need to do some kind of incremental import again and again from a SQLite 3 database to a MySQL database. Column names are the same in both databases. Is there a good way to do this by a script ...
2
votes
1answer
196 views

How to solve “/usr/bin/ld: cannot -lodbcinst” problem during FreeTDS installation

I have installed unixodbc for Microsoft SQL Server support in Linux. I want to connect PHP on Linux to a MS SQL server. I tried to install FreeTDS opensource , but it gives me following error. ...
2
votes
1answer
117 views

MSSQL database server on UNIX

I have heard rumors, but did not manage to find anything more, about some sort of MSSQL serving on UNIX machine, or MSSQL/MySQL server, that can handle MSSQL storage. I would like to know, if it is ...
2
votes
0answers
96 views

VoIP dialer for SIP

I have some Java, so am biased in that direction, but not overly so. None of the Java suggestions: http://stackoverflow.com/questions/16471795/sip-client-for-java ...
2
votes
0answers
470 views

Automatically update MPD database upon external storage insertion

I have an Alix board in my living room running Voyage MPD edition and acting as jukebox. In order to play "guest" music, I would like that MPD automatically updates its database with the content of ...
1
vote
4answers
2k views

Restart MySQL server

I am using MySQL v5.1 on Ubuntu machine. MySQL on my machine used to work. (Running mysql -u root gave me the MySQL command line.) This afternoon, I did the following thing: 1. check active process ...
1
vote
2answers
112 views

Databases backup with cron

I'm trying to set up a cron job in order to backup my databases daily. Here's what I wrote in my crontab file : 25 18 * * * root mysqldump -u root -p myPassWord --all-databases | gzip > ...
1
vote
1answer
109 views

I'm looking for a free database package for Ubuntu

I need to operate a database for personal use. Now I'm using Ubuntu 14.04 LTS, as opposed to Windows operating system, I'm wondering if there's a dBase, Lotus123 or Access equivalent for Linux? ...
1
vote
2answers
215 views

What network protocols do database servers use?

I have a postgres 9.1 server running on the default port 5432 on an ubuntu 12.04 cloud server. I want to open up the port so I can make remote queries -- but I have to open the port on IP tables, ...
1
vote
1answer
28 views

How reliable of using “nameofmychoice=”anyname“”

For backup MySQL MyISAM database, I'm using: backupdb=siteone mysqldump -u root -pthepass --lock-tables --add-locks --disable-keys --skip-extended-insert --quick $backupdb > /var/www/html/db2.sql ...
1
vote
3answers
1k views

Error dropping database in MySQL 5.1 on Ubuntu

I am using MySQL v5.1 on Ubuntu machine. I have a database named my_db which I would like to drop it, so I execute command: mysql> drop database my_db; ERROR 1010 (HY000): Error dropping ...
1
vote
2answers
3k views

MySql: LOAD DATA INFILE

I am using MySQL v5.1 on Ubuntu machine. MySQL data directory is /var/lib/mysql/ I have a test.dat file located on /var/lib/mysql/tmp/test.dat I would like to load data from the test.dat file into ...
1
vote
1answer
79 views

dump out some tables of the database

I am using MySQL v5.1 on Ubuntu machine. I have a database named db_test which contain tables like cars, customers, departments, prices , and so on. I know I can use the following commands to dump ...
1
vote
2answers
265 views

Is it possible for a OpenVZ container to interact with a MySQL database on the host?

Say every container and the host itself has its own dedicated, external IP. Is it possible to do this without any problems? And is this really a good plan? Instead of hosting a database per ...
1
vote
1answer
168 views

why csv is consuming more file size in my unix script?

I'm using this unix script which it is fetching records in the form of csv. I have a SQL query used for this purpose. It contains below information SET PAGESIZE 5000 SET COLSEP "," SET LINESIZE 2000 ...
1
vote
1answer
37 views

delete redis keys that have been inactive for 30 days

I've installed a web app called scrumblr which uses redis as a database. What I am attempting to do is delete all keys that have been inactive for 30 days, or have not been accessed in 30 days. I ...
1
vote
1answer
20 views

Changing redis filesystem writing behaviour

The filesystem usage of redis is peaking every 20 minutes at the moment on my server. Sometimes from 63.1% to over 90.9%! This causes my monitoring to send me alerts if its over a longer time-frame. ...
1
vote
0answers
926 views

How to set up Active Directory authentication on CentOS 6.5?

I have: 1. A CentOS machine to which I have SSH and STFP access. 2. The machine is on network where there is a MS SQL Server database and Windows shared drives. 3. All authentication seems to be with ...
1
vote
0answers
256 views

how to create a script to backup MySQL databases on separate files?

I need to create a script so to automate the backup process for my database server. Today there are 19 databases on the server and to prevent some schema is created and not contemplated by the script, ...
1
vote
1answer
184 views

syslog-ng ignores MSSQL database name

syslog-ng ignores the database defined in syslog-ng.conf and instead uses the default database of the user when logging to MSSQL destination. destination d_mssql { sql(type(mssql) ...
1
vote
0answers
105 views

Installing rpm & dependencies

I am trying to install an rpm, namely the Oracle 10g database for CentOS 6 for testing an app. The problem is that the machine the OS is installed on does not have access to the internet and there ...
1
vote
1answer
176 views

How do I run a service with numactl

I need to do something like this to run MongoDB $numactl --interleave=all /usr/bin/mongod --config /etc/mongod.conf & What should I change to be able to run the mongo daemon with the options ...
0
votes
3answers
284 views

Brand new to Linux - running a web server/database server, need to connect to my servers- how?

I am brand new to Linux. I have a database server and web server both running CentOS. My database server will host MySQL and my web server will host Apache. I am very familiar with Windows and ...
0
votes
2answers
697 views

How to remove the last character from every line in a text file [duplicate]

I have a tonne of data to analyse, but all the data was Thai. Google translate added a "." to every line after translation. How can I remove this dot from every line? Example from output: DB00301. ...
0
votes
1answer
70 views

How to move mysql database and mysql server to another machine

I am having Ubuntu 14.04 desktop in which i develop software. Due to some reasons my hard disk has developed many bad sectors. I want to move my mysql server software and all the databases to a new ...
0
votes
1answer
325 views

How to use grep and cut together?

Lets say I'm doing a database for fruits. Using a text file for it, inside contains, in this format, (Fruit:Quantity:Cost) Apple:10:1 Orange:20:2 Pears:10:3 Banana:20:4 10 Apples at $1 each. 20 ...
0
votes
1answer
45 views

Lock on IBM DB2 database on Linux server [closed]

My db2 database is running on Linux server, Some time database table got lock by some of db user due to uncommiting the session. My question is that how we can find out through which ...
0
votes
1answer
712 views

Gracenote database

I use GRIP to convert compact discs to a format that can be copied to an IPOD using AMAROK. By default, GRIP connects to freedb to get disc and track information. I've been told that the Gracenote ...
0
votes
0answers
32 views

Is there a `find` command that uses a database, like `locate`?

locate is simple yet quick because it's database based. find offers much more options but it's slower because it actually browses the filesystem each time it's invoked. So.. find using a database ...