This tutorial demonstrates how to install vsftp on CentOS/Redhat and configure it to allow connections over TLS for additional security. We’ll also chroot the users to their own directory. Install vsftp: yum install vsftp Edit the config file “/etc/vsftpd/vsftpd.conf” and set the following: rsa_cert_file=/etc/vsftpd/vsftpd.pem rsa_private_key_file=/etc/vsftpd/vsftpd.pem chroot_local_user=YES anonymous_enable=NO ssl_enable=YES allow_anon_ssl=NO force_local_data_ssl=YES
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Detect newly added disks. Linux on VMWare.
This one liner shows how to get Linux (CentOS in this case) to detect a newly added disk on a VMWare host. This was found on “http://wingloon.com/2013/05/07/how-to-detect-a-new-hard-disk-without-rebooting-vmware-linux-guest/”. ls /sys/class/scsi_host/ | while read host ; do echo “- – -” > /sys/class/scsi_host/$host/scan ; done There you have it.
Read moreInstall and Configure Tripwire on CentOS/Redhat
This article demonstrates how to install Tripwire on CentOS and Redhat. yum -y install tripwire Then have a look at “/etc/tripwire/twcfg.txt” and “/etc/tripwire/twpol.txt”. Nothing needs changing unless you need to. I’d suggest adding “[email protected]” to “/etc/tripwire/twpol.txt” to have reports emailed to you. Run the following: tripwire-setup-keyfiles The above requires you
Read moreSchedule jobs with the AT command
You can schedule commands to run at a later time by using the ‘at’ command. Why use ‘at’ when you can use ‘cron’? Because ‘at’ is good for tasks that only need to run once. To set a task (to email a log file at a later time) to run
Read moreInstall a Gnome Desktop on CentOS or Redhat
This article explains how to install a GUI desktop (Gnome) on a Redhat or CentOS system and have the system boot to that GUI on startup. yum -y groupinstall “Desktop” “Desktop Platform” “X Window System” “Fonts” To have Gnome start on boot, you will need to edit the file “/etc/inittab”
Read moreUpgrade to php-5.5 on CentOS/Redhat
This article demonstrates how to upgrade from php-5.3 to php-5.5 on CentOS or Redhat. rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm Now run the yum command to see a list of php-5.5 options: yum list php55w* Run the upgrade using the following commands: yum install yum-plugin-replace yum replace php-common –replace-with=php55w-common You will receive a
Read morecPanel overwriting my pg_hba.conf file
This article describes and solves (work-around) a problems with PostgreSQL and cPanel. The issue is that cPanel modifies the file “/var/lib/pgsql/9.4/data/pg_hba.conf” setting it back to a default state. This article has more information: http://www.davidghedini.com/pg/entry/installing_postgresql_9_on_cpanel By setting that file to your liking such as the following: local all all md5 host
Read moreLogin to PostgreSQL with PSQL on Redhat/CentOS
This article explains how to login to a PostgreSQL server using the psql tool on Redhat and/or CentOS. You first need the psql tool: yum install postgresql Then use the format below to connect and login. Here we’ll use the username of ‘root’ and the hostname is ‘db.agix.com.au’. psql -h
Read moreLdapsearch with Active Directory on Redhat/CentOS
This article demonstrates how to get data out of Active Directory using Ldapsearch. Install the tools: yum install openldap* A simple grab: ldapsearch \ -x -h ad.server.local \ -D “myUserName” \ -W \ -b “dc=company,dc=local” \ -s sub “(cn=*)” cn mail sn The above will get all users within LDAP
Read moreFind and Replace in multiple directories
This article explains how to search for files with a string and replace that string with another string. cd /home find ./ -type f -exec sed -i -e ‘s/FromThis/ToThis/g’ {} \; The above will search through the /home directories and replace any occurrence in any file of “FromThis” with “ToThis”.
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