Category: Professional

AutoFS and Mounting in Linux/Redhat/CentOS

AutoFS and Mounting in Linux/Redhat/CentOS echo “AutoFS – Automatic FS system Mounting – Dec 26th, 2017 by Sayed” check if Autofs installed or not yum list installed | grep autofs I just installed; hence it is there you can install with yum -y install autofs 944 yum -y install autofs then you can enable autofs …

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On File Systems and Linux Commands (Redhat/CentOs/Fedora)

On File Systems and Linux Commands (Redhat/CentOs/Fedora) echo “Dec 26th, 2017, Sayed Ahmed, Justetc Technologies” On file Systems – Target Audience: Technical People. Software Developers and System/Network Administrators or DevOps  (or wanna be) / and /boot are the default Linux file systems you can also configure /home, /opt, /var, /tmp, /usr as separate file systems …

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Users and Groups management in Linux (Redhat/CentOS/Fedora)

Users and Groups management in Linux (Redhat/CentOS/Fedora) Target Audience: Technical people who knew or already know (to some extent) – just wanna review Yes, from my history 622 echo “dec 25th, 2017 – sayed”   User and password related files 623 cat /etc/passwd 624 cat /etc/shadow 625 cat /etc/group 626 cat /etc/gshadow There are some …

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NTP related commands/Linux

598 echo “dec 24th, 2017” 599 echo “NTP Client” 600 yum list ntp 601 yum list installed |grep ntp 602 To activate ntp 603 yum -y install ntp system-config-date 604 cat /etc/ntp.conf 605 grep ^server /etc/ntp.conf 606 systemctl restart ntpd 607 systemctl enable ntpd 608 systemctl start ntpd 609 ntpq -p 612 nmtui 613 ip …

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Network Interface, Network Clients related Linux/Redhat/CentOS commands

echo “Dec 24th, 2017” 532 echo “Basic Networking in Linux” 533 hostname 534 uname -a 535 uname -n 536 cat /etc/hostname 537 nmcli general hostname 538 changing hostname temporarily 539 hostname server10.example.com 540 for permanent change 541 hostnamectl set-hostname server100.example.com 542 or change /etc/hostname file 543 vim /etc/hostname 544 restart systemctl 545 systemctl restart systemd-hostnamed …

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TCP Wrappers in Linux/CentOS/Redhat/Fedora

TCP Wrappers in Linux/CentOS/Redhat/Fedora yum info tcp_wrappers yum install tcp_wrappers-devel.x86_64 506 reboot 507 ifdown ens33 508 ifup ens33 509 yum install tcp_wrappers-devel.x86_64 510 yum -y install tcp_wrappers-devel.x86_64 511 ls /var/ftp/pub/Packages/ 512 ls /etc/yum.repos.d/local.repo 513 vim /etc/yum.repos.d/local.repo 514 systemctl status vsftpd 515 systemctl start vsftpd 516 systemctl enable vsftpd 517 yum -y install tcp_wrappers-devel.x86_64 518 cat …

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SSH/SSHD/OpenSSH in CentOS/Redhat Linux

Experiment with SSH/SSHD/OpenSSH in CentOS/Redhat Linux Yes, from  my history (Probably a review for the technical people, who already knew these sometimes in the past) 461 echo “dec 24th, 2017” 462 vim /etc/ssh/sshd_config 463 echo “SSH Related Commands” 464 scp -> secure copy 465 tscp -> secure copy for windows 466 sftp -> secure ftp …

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Linux: LVM : Logical Volume Manager : Multiple Hard Disk and Partition and Volume Management

On RedHat/Centos Linux – LVM experiments Concepts to understand: Physical Volume: Physical Hard Drive or  Partitions in Physical Hard Drive Physical Extent:  One unit of space usually 4 MB. Volume Group: One or multiple Physical Volumes can be assigned to a Volume Group Logical Volume: Logical volumes are created from the volume groups. This is …

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Centos/Redhat লিনাক্স এ yum ইন্সটলার সার্ভার কিভাবে কনফিগার করবেন

Centos/Redhat লিনাক্স এ yum ইন্সটলার সার্ভার কিভাবে কনফিগার করবেন Mount Installer ISO mkdir /mnt/dvd1 mount /dev/sr0 /mnt/dvd1 Check if FTP server is installed systemctl status vsftpd systemctl start vsftpd Install ftp Server. Using rpm as yum is not available yet [default yum needs the internet, kindof] cd /mnt/dvd1/Packages/ rpm -ivh vsftpd-3.0.2-22.el7.x86_64.rpm systemctl start vsftpd systemctl …

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In Bengali: Some Educational Android Apps on Software/Web Development

Some are in Bengali Project Management https://play.google.com/store/apps/details?id=com.sitestree.pmp On CSS https://play.google.com/store/apps/details?id=com.sitestree.css On JavaScript https://play.google.com/store/apps/details?id=com.sitestree.javascript   On PHP https://play.google.com/store/apps/details?id=com.sitestree.php   On SEO course https://play.google.com/store/apps/details?id=com.sitestree.seo   SQL Course https://play.google.com/store/apps/details?id=com.sitestree.sql   Oral Communications https://play.google.com/store/apps/details?id=com.justetc.oral_communications.workplace   AngularJS https://play.google.com/store/apps/details?id=com.salearningschool.bangla.angularjs1   HTML https://play.google.com/store/apps/details?id=com.salearningschool.bangla.html

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