Text Books » Linux

VSFTPD: Lock Users in Home Directory

admin — Sun, 13 Jun 2010 14:55:46 +0000

To lock users in their home directory in VSFTP, you need to edit file vsftpd.conf, usually found in (/etc/vsftpd/vsftpd.conf). and add the following line

chroot_local_user=yes

How to Mount an ISO image under Linux

admin — Tue, 01 Jun 2010 09:59:44 +0000

To Mount an ISO image under Linux, you need simply to do the following steps.

1. you must be logged in as root

2. Create a mounpoint (Folder)

mkdir -p /mnt/isodisk

3. Use mount command as follows to mount iso file called dvd1.iso

mount -o loop dvd1.iso /mnt/isodisk

4. Change directory to list files stored inside an ISO image:

cd /mnt/disk
ls -l

ISO Image:
An ISO image is an archive file (disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format. ISO image files typically have a file extension of .ISO. The name "ISO" is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image can also contain UDF file system because UDF is backward-compatible to ISO 9660.

You can mount an ISO images via the loop device under Linux. It is possible to specify transfer functions (for encryption/decryption or other purposes) using loop device.

More about loop device

A loop device is a pseudo-device that makes a file accessible as a block device. Loop devices are often used for CD ISO images and floppy disc images. Mounting a file containing a filesystem via such a loop mount makes the files within that filesystem accessible. They appear in the mount point directory using above commands.

How to find computer serial number

admin — Mon, 31 May 2010 11:51:05 +0000

How to find computer serial number in Windows:

From the Command line prompt type

wmic bios get serialnumber

To get the computer model

wmic csproduct get name

How to find computer serial number in Linux:
from the command line type

dmidecode | grep "System Information" -a10

eAccelerator Best Settings

admin — Sun, 17 Jan 2010 11:47:06 +0000

eaccelerator.shm_size="28"
eaccelerator.cache_dir="/var/cache/eaccelerator-php5/"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.debug="0"
eaccelerator.check_mtime="1"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
eaccelerator.keys="shm_and_disk"
eaccelerator.sessions="shm_and_disk"
eaccelerator.content="shm_and_disk"

[RESOLVED] compiling PHP5/Imap: configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing

admin — Sun, 03 Jan 2010 13:36:27 +0000

if you get the following error while trying to compile php5 with imap.

configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing

on RedHat do the following:

yum install libc-client-devel

The try to recompile PHP
That should solve the problem.

compiling php with modules to php with custombuild (DA)

admin — Sun, 03 Jan 2010 13:18:20 +0000

If you want to add any extra modules to php, they'll most likely need to be compiled in. Any module that needs to be compiled in will have a --with-module type flag which will need to be used. To add this flag, run the following:

cd /usr/local/directadmin/custombuild
mkdir -p custom/ap2
cp -fp configure/ap2/configure.php5 custom/ap2/configure.php5
#add your --with-module line to the end of the custom/ap2/configure.php5 file,
# and make sure the \ character exists at the end of all lines except the last one.
./build php n

change configure.php5 to configure.php4 if you're using php4.
If you're using suphp, the paths would be configure/suphp/configure.php5 and custom/suphp/configure.php5.

Restart apache:

RedHat:

/sbin/service httpd restart