How many concurrent apache2 instances are normal in Linux?
You can have any number of Apache2 instances between 1 and 200,000 servers. This can be changed at compile-time, though.
How do you enter the Command-line interface?
There are a couple different "terminal" programs, you can either find them in your desktop managers "start" menu or you can press Alt+F2 to bring up the run menu and in KDE enter "konsole" and gnome "gnome-terminal" or you may also have "xterm"
What is the difference between the grep and sed commands in Linux?
The term "grep" stands for "global regular expression parser". It's used to search a character stream for items matching a specific pattern.
The term "sed" stands for "stream editor". It's also capable of searching a character stream for items matching a pattern, but whereas grep just finds them, sed then actually does something to them to change them.
How do you recognize a hidden file in Linux?
It's name begin with a full stop, like .profile or .bash_history
(ls .* or ls -a shows it nevertheless)
What is the difference between passive and active FTP?
A client can ask an FTP server to establish either a PASV (passive-default) or a PORT (active) connection for data transfer. Some servers are limited to only one type of connection. The difference between a passive and an active FTP connection lies in whether the client or server initiates the data connection. In passive mode, the client initiates the connection to the server (port 20-default(; in active mode, the server initiates the connection. Neither is inherently more secure than the other.
A Practical Guide to Fedora and Red Hat Enterprise Linux pg 644-Passive versus active connections
Is there anything on Linux that is similar to Macromedia Flash Pro 8?
Not quite. There's no tools that combines both the ability to create .swf files and the scripting engine in a nice IDE. KToon can create Flash animations and export them as Flash animations, but it lacks any real scripting support. haXe can be used to create Flash content as well, but it uses a different scripting format from ActionScript. There are some other tools available that I'll list below.
If you have a copy of Macromedia Flash pro 8 already, however, it runs well under Wine.
#!/bin/bash
useradd username
usermod username usergroup
Link Counts In linux
there are basically two types
1.soft links
2.hard links
RTFM is an abbreviation standing for "Read The F**king Manual." It is often used by impolite users in a response to a question from a newbie, when the answer could probably have been found by simply reading the accompanying documentation.
It's process of making Linux even more secure. There are many ways to do that - from tweaking network policies to installing and configuring kernel security modules.
For a desktop PC or a small home server, you don't need to worry about that since Linux is already secure enough by default.
How do you check NFS mounts on HP-UX 11.23?
It depends on what you are checking. You can use the 'df' command to see what is currently mounted via NFS and the 'mount' command (or check /etc/fstab) for mountable file systems.
What software is used by Linux in spread sheet?
There are several, but by far the most prominant for Linux would be LibreOffiice Calc.
What does wild card stand for in Linux?
What they mean in any computing terminology: A way to allow the computer to match ANY character (Or series of characters) to where your wildcard is.
A ? wildcard allows the system to figure out a single letter in its place, for example:
d?g might get you a list containing dog, dig, or dug, but NOT dang, or dung, as those are multiple character substitutions.
d*g would get you everything d?g would find, but also throw in any word matches that could fit involving any number of letters in its place while still being a recognized word, for example the command:
rm -v *.pkg*
would remove ANY file in the current directory you have permissions to modify that has ".pkg" ANYWHERE in its name, as it can match any number of letter preceding or following. Thus, rm -v * would remove ALL files it can see that you have access to non recursively. Naturally I don't need to warn you about the dangers of using a powerful and dangerous Linux command as root with a wildcard, as you can cause irreparable damage to your system.
How do I play Runescape with an Aspire One Acer Linux laptop?
Make sure you download the latest version of java, if you have and still can't play (like i had to do) read this page:
http://macles.blogspot.com/2008/09/installing-sun-java-on-acer-aspire-one.html
Ps:i did not make the above site
Pss: Add me on runescape! my user is Bunniepopz =P
A kernel is the core program that runs programs and manages hardware devices, such as disks and printers. It executes the commands which provide by environment.
How do you install Apache on SUSE Linux?
1. Click the green gecko.
2. Select System > YaST
3. Enter your password
4. Click "Software"
5. Enter "apache" in the search box
6. Select "apache2" from the list.
7. Click Accept.
What process was first used to install software on Linux systems?
The first method (and similar to that still use by some distros like Slackware) is a simple tarball (.tar.gz file). Extracting this into your root file system would install the library or binary.
Another method, if you already had a working compiler, was to compile the software yourself. The ./configure, make, make install was fairly commonplace in the early days of Linux. You can thank Debian for making life easier.
What is the relationship between root directory and subdirectory and a file?
Root is the parent directory
and
subdirectory is the branch of them.
Can you use norton with Linux?
Yes - and No...
There is no home edition of Norton for Linux that I know of. However, there is an enterprise edition of Antivirus for Linux.
What is the name of a password file in Linux?
User account information can be found inside /etc/passwd file; the password field is the second one using ":" as the field delimiter.
In case the password there is a lower-case "x", then the encrypted passwords is stored inside /etc/shadowfile.
For more information look at the output of these commands:
* man 5 passwd * man 5 shadow
Are commands other than shell built-in executed in kernel?
No. All commands are executed in userspace. If the command is not built-in to the shell, it will look in a binary directory (/sbin, /bin, /usr/bin, or /usr/local/bin) for a program matching that name.
What is the difference between the useradd and adduser command?
On Debian or Ubuntu systems, useradd is a command itself, and you can create users and define options to them using this command, and adduser is a perl script, that uses useradd to create the account, asking you the password, Full-name, phone and others ..
On Fedora or CentOS systems, adduser is just a symbolic link to useradd, but may try to copy the script from a Debian system to the CentOS one, I have never tried it, and may need to modify it a little before using it.
On Gentoo systems, is the same as in CentOS or Fedora, adduser is just a symbolic link to useradd.