FAQ for the 'Linux / UNIX File Formats' Category

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Ubuntu Linux: Firefox and Desktop Application Fix Smooth Font Problem ( Render Font Correctly )

Q. How do I render font smoothly in Ubuntu Linux / Gnome desktop systems? How do I get look a likes of the Microsoft / Mac OS X smooth fonts for Firefox and other applications?
Linux: Find Out If a Particular Driver / Feature Compiled Into Running Kernel or Not

Q. I know how to find out information about compiled driver under FreeBSD kernel. But, how do I find out if a Particular feature, driver or filesystem support is compiled into my running Linux kernel or not? How do I find out if DMA support is compiled into my kernel?
How To Select Best Linux Desktop Application

Q. I’m new to GNU/Linux world and a single query (apt-cache search office or yum search ‘office’) shows so many application for a single task such as network monitoring or office applications. The number of apps choices just confusing. How do you select application from so many choices?
FreeBSD csh / tcsh: Export Shell Variable

Q. I’m using FreeBSD 7 with csh (tcsh) shell. How do I export shell variable under FreeBSD operating systems?
pdfimages: Extract and Save Images From A Portable Document Format ( PDF ) File

Q. How do I extract images from a PDF file under Linux / UNIX shell account?
BASH: Prepend A Text / Lines To a File

Q. I can append text to a file using >> operator but how do I prepend a text to a file? I want the opposit of >> operation?
psql: FATAL: Ident authentication failed for user "username" Error and Solution

Q. I’ve installed Postgresql under Red Hat Enterprise Linux 5.x server. I’ve created username / password and database. But when I try to connect it via PHP or psql using following syntax:

psql -d myDb -U username -W

It gives me an error that read as follows:

psql: FATAL: Ident authentication failed for user “username”

How do I fix this error?
Red Hat Linux Static Routing Configuration

Q. I’ve two network interface connected to two different routers as follows:
[a] eth0 LAN network 10.0.0.0/8 - gateway IP - 10.8.2.65

[b] eth1 ISP assigned network 202.54.22.128/28 - gateway IP - 202.54.22.129
I can only ping to public server but not to another servers inside LAN? I’m not able to route traffic via 10.8.2.65. How do I configure static routing under Red Hat Enterprise Linux 5.x or CentOS Linux 5.2?
Ubuntu Linux Disable control-alt-delete [CTRL-ALT-DEL] Emergency Keypress Handling
Q. How do I delete control-alt-delete emergency keypress handling to improve security of my Ubuntu Linux server?
Understanding /var/account/pacct OR /var/account/acct - Acct File Format
Can you explain /var/account/pacct or /var/log/account/pacct file under Linux / UNIX operating systems?