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CentOS / RHEL 7 : How to setup yum repository using locally mounted DVD

https://www.thegeekdiary.com/centos-rhel-7-how-to-setup-yum-repository-using-locally-mounted-dvd/ yum is the primary tool for getting, installing, deleting, querying, and managing Red Hat Enterprise Linux RPM software packages from official Red Hat software repositories, as well as other third-party repositories. The post below describes step by step procedure to use a locally mounted RHEL

tar multi-tape backup script

change_tape.sh #!/bin/sh # after tar complete backup command # tar -v –create –tape-length=1G –file=/dev/nst24 /usr –new-volume-script=/root/change_tape.sh # mtx -f /dev/sg28 status | grep Full| awk -F: '{print $1}' | awk '{print $3}' > /root/tapelist.txt mtx -f /dev/sg28

Linux Create 3TB partition size

To create a partition start GNU parted as follows: # parted /dev/sdb Output: GNU Parted 2.3 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) Creates a new GPT disklabel i.e. partition table: (parted) mklabel gpt Sample outputs: Warning:

Marc's Public Blog - Linux Btrfs Blog Posts

I've been using btrfs since 2012, and while as of 2014, it's far from done, it's gone a long way in that time. I thought I'd post some tips and scripts from things I've learned through my own use and

Sparse file under Linux

https://wiki.archlinux.org/index.php/Sparse_file This article contains information regarding sparse files, their creation, maintenance, and expansion. Contents [hide] * 1Sparse Files * 1.1What is a sparse file? * 1.2Advantages * 1.3Disadvantages * 2Creating sparse files * 2.1Making existing files sparse * 2.2Formatting the file with a filesystem * 2.

3G work with office network

phillips@phillips-ThinkPad-T420:~$ cat bin/3Gwifi_net_office.sh #!/bin/sh # For dropbox sync ~/Dropbox # This script help update routing table for forward main traffic to wifi -> 3G # and keep office network connection via eth0 wlanip=`ip -4 addr show wlan0 | grep inet| awk '{print $2}' | awk

在 CentOS 7 上設置 grub2

在 CentOS 7 上設置 grub2 此文章主要以 Things to Know About Grub2 為基礎，而對象是那些開啟 /etc/grub2.cfg（或 /boot/grub2/grub.cfg）編輯開機選單的用戶。另外請參閱上游關於 grub2 的文檔和 grub 的使用手冊。 1. 開機選單是自動建立出來的請勿嘗試手動編輯開機選單，因為它是按照 /boot/ 目錄內的檔案自動建立出來的。然而你可以調整 /etc/default/grub 檔內定義的通用設定，及在 /etc/grub.d/40_custom 檔內加入個別自訂項目。 /etc/default/grub