[Centos, Composer] Install Composer on Centos 6.6

Hello, today I would like to install composer on my Centos machine. Please go thru the steps to see how I manage to install it:

[Centos] - Adding, Enabling and disabling repo in Centos

Adding repo

yum-config-manager --add-repo repository_url

* we also can add the repo by using rpm command. Here is the example.
Download the repo file. The repo file will be in .rpm, then install the repo files using this command:

rpm -ivh the_repo_filename.rpm

*The repo file will be installed at /etc/yum.repos.d

Disabling repo

yum-config-manager --disable repo_name

Enabling repo

yum-config-manager --enable repo_name

[Centos] How to install Broadcom BCM43142 wifi driver on Centos 6.6

Last night, I just installed Centos 6.6 on my Dell Inspirion 15R 5520. Everything works fine except the wireless device. So here is the steps:

Step 1

[root@blackhat /]# yum groupinstall "Development Tools" 

Step 2

[root@blackhat /]# yum install gcc* compact-* install kernel-devel-$(uname -r) kernel-headers redhat-lsb kernel-abi-whitelists
 

Step 3 : create new directory

[root@blackhat /]# mkdir bcm43142 
[root@blackhat /]# cd bcm43142 

Step 4 : Download the driver from Broadcom official website (https://www.broadcom.com/support/802.11/linux_sta.php) and untar the file

32 bit driver
wget https://www.broadcom.com/docs/linux_sta/hybrid-v35-nodebug-pcoem-6_30_223_248.tar.gz

64 bit driver
[root@blackhat bcm43142]# wget https://www.broadcom.com/docs/linux_sta/hybrid-v35_64-nodebug-pcoem-6_30_223_248.tar.gz

Untar the downloaded file
[root@blackhat bcm43142]# tar -xzvf hybrid-v35_64-nodebug-pcoem-6_30_223_248.tar.gz
 

Step 5 : Build the driver

[root@blackhat bcm43142]# make

* When the build completes, it will produce a wl.ko file in the top level directory.

Step 6 : Insmod the driver

[root@blackhat bcm43142]# modprobe lib80211
[root@blackhat bcm43142]# modprobe cfg80211
[root@blackhat bcm43142]# insmod wl.ko

Step 7 : load the wireless device at boot time

[root@blackhat bcm43142]# cp wl.ko /lib/modules/`uname -r`/kernel/drivers/net/wireless 
[root@blackhat bcm43142]# depmod -a

That's it, hope it'll help others

REFERENCE
https://www.broadcom.com/docs/linux_sta/README_6.30.223.248.txt

[Centos] SDHC MMC slot not working on Centos 6

1) Enable ElRepo on your centos. Import the public key:     
    rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

2) Then install ElRepo:
    rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm 

    * see this (http://elrepo.org/tiki/tiki-index.php)  for more information

3) Then run below command:
    yum install kmod-rts5139

4) Reboot and you're done.

Hope this'll help. 

[Linux] Install Apache 2.4.10 from source package

Requirements:

1. Centos (any version, but in this case we use 6.3)
2. APR
3. APR-UTIL
4. PCRE
5. Apache 2.4.10 tarball

1) Create new folder:
       mkdir /etc/httpd-2.4.10

2) Then, install APR:
   download APR from https://apr.apache.org/download.cgi (* in this case we use apr-1.5.1)
   after download, untar the apr-<version>.tar.gz

•     tar -xzvf apr-<version>.tar.gz <enter>

•     cd apr-<version> <enter>

•     ./configure --prefix=/etc/httpd-2.4.10/dep/apr <enter>

•     make; make install <enter>

3) Install apr-util:
   download apr-util from https://apr.apache.org/download.cgi (* in this case we use apr-util-1.5.4)
   untar the apr-util-<version>.tar.gz

•     tar -xzvf apr-util-<version>.tar.gz <enter>

•     cd apr-util-<version> <enter>

•     ./configure --prefix=/etc/httpd-2.4.10/dep/apr-util --with-apr=/etc/httpd-2.4.10/dep/apr <enter>

•     make; make install <enter>

4) Install pcre:
   download pcre from http://www.pcre.org/ (* in this case we use pcre-8.36)
   untar the pcre-<version>.tar.gz

•     tar -xzvf pcre-<version>.tar.gz <enter>

•     cd pcre-<version> <enter>

•     ./configure --prefix=/etc/httpd-2.4.10/dep/pcre --enable-utf8 --enable-unicode-properties <enter>

•     make; make install <enter>

5) Now install httpd-2.4.10:
   download httpd from http://www.apache.org/dyn/closer.cgi
   untar the httpd-2.4.10.tar.gz

•     tar -xzvf httpd-2.4.10.tar.gz <enter>

•     cd httpd-2.4.10 <enter>

•     ./configure --prefix=/etc/httpd-2.4.10 --enable-mods-shared="all" --enable-so --with-apr=/etc/httpd-2.4.10/dep/apr --with-apr-util=/etc/httpd-2.4.10/dep/apr-util --with-pcre=/etc/httpd-2.4.10/dep/pcre --enable-ssl <enter> (* ./configure --help   to see the option)

•     make; make install <enter>

TQVM
MJMZ

Install Maven on CentOS 6.5

1. Download maven from Apache website (http://maven.apache.org/download.cgi)
2. Extract the downloaded file, put the extracted file to /usr/bin
   
   

   tar ­xzvf apache­-maven-­[version]­-bin.tar.gz ­C /usr/bin

   
   
3. Then go to the /usr/bin directory and create symlink (symbolic link) for maven.
   
   

   cd /usr/bin
   ln ­-s apache-­maven­-[version] maven
   

   
   
4. Then, do the following:
   
   

   vi /etc/profile.d/maven.sh

   
   Put below code into the vi editor and save it:
   
   

   export M2_HOME=/usr/local/maven
   export PATH=${M2_HOME}/bin:${PATH}

   
   
5. Then log-out and log-in again to activate the above environment setting.
6. To check maven is running ok on your computer, type the following using terminal:
   
   

   mvn -version

[Linux] Put backslash \ to the filename that contains space

Let say you have folder like below:

myFolder
 |_ text file one.txt
 |_ text file two.txt
 |_ text file three.txt

Type the command like below:

ls myFolder/* | sed 's/ /\\ /g'

Output:

myFolder/text\ file\ one.txt
myFolder/text\ file\ two.txt
myFolder/text\ file\ three.txt