How to update the man in bash [closed] - linux

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I have been trying Linux recently so my questions must be too much easy for you .Anyway
I try to look the man of lseek but there is no man for this function . I'd like to know how to update the man of linux on bash.
thank in advance

On Debian the commands would be (as root)
apt-get install man-db
apt-get install manpages-dev
And for completeness
apt-get install glibc-doc

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Cannot --enable-pcregrep-libbz2 because bzlib.h was not found [closed]

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I am trying to install pcre 8.32.
When I tried to install following this tutorial I get this error:
**Cannot --enable-pcregrep-libbz2 because bzlib.h was not found**.
Then I tried: sudo yum install libbz2-dev and now it is saying No package libbz2-dev available.Error: Nothing to do
I am totally confused. What shold I do next?
Try to locate the package that provides the bzlib.h file with:
sudo yum whatprovides */bzlib.h
And then install that package
From your comment the package name is bzip2-devel-1.0.6-3.fc15.i686, so do:
sudo yum install bzip2-devel-1.0.6-3.fc15.i686

yum updates in fedora 17 going extremely slow [closed]

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I've just installed Fedora 17 and did an initial update:
yum update
yum update download speed is going way too slow. Download speed is 5 kbps.
Is there a way to tell yum to not pick such slow repositories?
Someone wrote a yum plugin which addresses this very issue that tells yum to use the fastest mirror available, here is how you install it:
su
enter password
yum install yum-plugin-fastestmirror
Then I did the:
yum update
And now the yum update is utilizing the full bandwidth of my download speed.

Problem with using aircrack-ng [closed]

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I have problem with install a Aircrack-ng.
I was downloading aircrack from the official website and I followed to the ruls:
cd aircrack-ng-1.1
make
make install
http://pastebin.com/XsMzCbGN
Look at line 21: crypto.h:12:26: fatal error: openssl/hmac.h: Aucun fichier ou dossier de ce type
It appears you don't have openssl properly installed? You also should run "make install" as sudo (if you don't have admin rights)
Alternatively, if you're using Ubuntu (or similar distro), aircrack-ng should be in your repositories, so you don't need to install it from source:
sudo apt-get install aircrack-ng

How to install packages from command line on Suse [closed]

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What is the Suse version of apt-get or yum?
How do I install software packages from the command line?
A fairly intense session of googling suggests that it may be yast or yast2, but no sensible HOWTO of listing and installing packages from the command line seems to exist. (maybe I am looking in the wrong place)
If I am an administrator for a remote Suse server, how do I install packages from the command line? (Not using a GUI and preferably installing from a central repo)
zypper
Found a tutorial for you
And official documentation

Installation of Apache on CentOS [closed]

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How to install Apache on a CentOS 7?
1) login as root or use sudo
2) yum install -y httpd or sudo yum install -y httpd
3)all config files are locates in /etc/httpd/conf and /etc/httpd/conf.d
4)all your html files can be found in /var/www/html
5) Start learning the basic at http://www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-httpd.html
6) grab a cup of coffee, tea or whatever you like most.
Or just edit your /etc/httpd/conf/httpd.conf near the bottom and voila you have a new vhost!

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