A few weeks ago, it is announced (by The Energy and Natural Resources Ministry of Iran) that DST will be permanent and GMT+3:30(IRST) will be used forever in the country. From 2023, Iran will not set their clocks forward for Daylight Saving Time (DST) but remain on standard time permanently. Based on following manual, we … Read more
RPM is a command-line utility for managing packages on Unix/Linux systems. It allows you to install, query, update, verify and remove RPM packages.It is the default package manager for Red Hat based systems and only works with the .rpm format. You can install such packages using the rpm or the yum command.The package management tool … Read more
### It’s possible to check all services like follow: # the list of all services [root@testos]# systemctl list-unit-files -t service UNIT FILE STATE abrt-ccpp.service enabled abrt-oops.service enabled abrt-pstoreoops.service disabled abrt-vmcore.service enabled abrt-xorg.service enabled abrtd.service enabled arp-ethers.service disabled atd.service enabled auditd.service disabled auth-rpcgss-module.service static autofs.service disabled autovt@.service enabled blk-availability.service disabled brandbot.service static certmonger.service enabled chrony-dnssrv@.service static … Read more
### Create self-signed certificate. [root@testos ~]# cd /etc/pki/tls/certs[root@testos certs]# openssl req -x509 -nodes -newkey rsa:2048 -keyout vsftpd.pem -out vsftpd.pem -days 365Generating a 2048 bit RSA private key……++++++…….++++++ writing new private key to ‘/etc/pki/tls/certs/vsftpd.pem’ You are about to be asked to enter information that will be incorporatedinto your certificate request.What you are about to enter is … Read more
### Configure Vsftpd [root@testos ~]# yum -y install vsftpd ### Edit/Update vsftpd Configuration file [root@testos ~]# vi /etc/vsftpd/vsftpd.conf # line 12: no anonymous anonymous_enable=NO # line 82,83: uncomment ( allow ascii mode ) ascii_upload_enable=YES ascii_download_enable=YES # line 100, 101: uncomment ( enable chroot ) chroot_local_user=YES chroot_list_enable=YES # line 103: uncomment ( specify chroot list ) … Read more
Cacti is a network graphing tool similar to MRTG. How do I install and configure common options to collect SNMP data and various other data (such as system load, network link status, hard disk space, logged in users etc) into an RRD? From the official project site: Cacti is a complete frontend to RRDTool, it … Read more
A volume is a logical collection of bricks where each brick is an export directory on a server in the trusted storage pool. To create a new volume in your storage environment, specify the bricks that comprise the volume. After you have created a new volume, you must start it before attempting to mount it. … Read more