PUBLIC MARKS from alamat with tags tips & unix

In the .login file add the commands:

One of the popularly known method of breaking into a Unix host is by inserting a uid value 0 in the /etc/passwd file which could be done in many ways including backdoors for later accesses .

Quick way to close your X login session (for SysV) for PID in `ps -u$USER | grep “fv[wm]” | awk ‘{print $1}’`; do kill -9 $PID; done Or throw it into a shell script:

Either install the package that comes with your distribution (on Debian you would run apt-get install chkrootkit

There is nothing more frustrating for an Administrator who has to reboot system due to fork bomb

If you have a couple of old Linux boxes sitting around, then you’ve got the makings of a supercomputer. Dust them off, install Secure Shell (SSH)

If you receive error messages such as “unknown version” when attempting to mount a Linux based NFS server from Solaris

One other suggestion on how to separate shell command history files by terminal (It works on HP-UX):

This tutorial describes how to set up database replication in MySQL. MySQL replication allows you to have an exact copy of a database from a master server on another server (slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync.

If you forgot your mysql password and you have root access, just follow this steps.

Do you find trouble in transferring multibyte binary data files to Windows and then read through HexEditor ?

Ever found a need to find for a particular string across the file system and edit all those files which contains that particular string?? Here is a simple way.

If a file has a special character, Unix will try to interpret the character. Renaming these type of files cannot be done with a simple “mv”…..it will have to be done using the file’s inode.

Here is how to monitor a growing file and have it highlight a KEYWORD:

To Make a file look older.

Most often when we try to execute a command at the shell we do some mistakes like missing out a char or misspelling it.

Linux hard disk device names follow a specific standard. SCSI disks all start with sd and IDE disks with hd. After this comes a letter that identifies the unit number of the disk, so for example, the first disk would be a, the second would be b, the third would be c, and so on.

.htaccess files are very versatile, and can easily become very complex. This document contains enough information to set simple access restrictions/limits on a directory in your web space. Remember to upload .htaccess files, and .htpasswd files using ASCII mode. This is an option is available in most FTP clients.

Normally one would ask? how do i add additional harddrive to my linux box.. well we could make use of utilities like fdisk, cfdisk or QtParted but it is fdisk that is im going to discuss below.

These are some unix tips that might be helpful someday down the road. Feel free to contribute more unix tips by commenting on this article.

This document describes how to install a Proftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota with this setup.

The Linux kernel, since version 2.0, has included the capabilities to act as a firewall. In those days, the kernel module was called ipfwadm and was very simple. With the 2.2 kernel, the firewall module became called ipchains and had greater capabilities than its predecessor. Today, we have IPTables, the firewall module in the kernel since the 2.4 days. IPTables was built to take over ipchains, and includes improvements that now allow it to compete against some of the best commercial products available in the market. This guide will give you some background on IPTables and how to use it to secure your network.