Using Wget To Download FTP Folders

Using wget to download FTP folders

If you want to copy all of the files and folders from one host to another by using the ftp account.

Then use the following command to download the files/folders on remote server by using wget. Use this command on destination server.

wget -m ftp://username:password@ip.of.old.host

Some on the hosting provider disabled the main ftp account for the ftp access and provide the new ftp account in the format admin@domain.com then you need to use the following command to access the ftp account by using wget.

wget -m –ftp-user=”admin@domain.com” –ftp-password=aq1sw2de3 ftp://ip.of.old.host/*

Note: Replace the “admin@domain.com” equal to original ftp user name and also replace“aq1sw2de3? with the original password.

Create Yum Repository On Local Machine

Yum repository on local machine

If you want to install software/packages after installation of linux (CentOS, Fedora etc.). You can create the yum repository to install all the software/packages which is present into the instillation CD. When you have try to install software/packages then some time it shows dependencies problems. To fix this problem I suggest your create the local machine yum repository by using the following steps.

1) Create directory

mkdir -p /root/install/RPMS

2) Copy all the software/packages RPMS from instillation CD/DVD to /root/install/RPMS directory

3) Install createrepo RPM from /root/install/RPMS directory using rpm command

rpm -ivh createrepo-0.4.11-3.el5.rpm

3) Now, we will have to create repo of the directory in which we have coied the RPMS. Following is the command to create the repo

[root@server ~] createrepo /root/install/RPMS
Once the above command gets completed you will find repodata directory in /root/install/RPMS folder

4) configuing YUM to work with local repository. Create a new file in /etc/yum.repo.d/ or open /etc/yum.conf and paste following

[local repo]
name = OS $release – MyLocalRepo
baseurl = file://root/install/RPMS
enabled=1
gpgcheck=0
Now Try to install any package using ” yum ” command

for example:

yum install mysql

yum install php*

Done

SSH With Private Key Authentication

How to Add ssh user on linux server ?

Ans:

You can use the putyykey generator and generate the ssh key for the user and copy into the local computer.You can download the puttykey generator from the URL http://the.earth.li/~sgtatham/putty/latest/x86/puttygen.exe

The following are the steps for creating ssh user with the authentication :-
#adduser test
#passwd test
#cd /home/test
#mkdir .ssh
#cd .ssh
#vi authorized_keys
In which file paste the generated key and save
Then add this user into wheel group
#vi /etc/group
Wheel:root,test
# vi /etc/sudoers
search the below line and remove comment.
===============================
# Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
===============================

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