• How To Add Windows 7 8 10 11 to GRUB Boot List Dual Booting


    Many times just doing an update-grub may find Windows and add it to grub, but a lot of times it won't. Create Windows in a custom grub entry like below: sudo vi /etc/grub.d/40_custom menuentry "Windows 10" { set root='(hd0,0)' chainloader + 1 } Change Windows 10 to whatever you want to call it. For example if it was for Windows 11 you'd probably want to ca........
  • Dell PowerEdge Server iDRAC Remote KVM/IP Default Username, Password Reset and Login Information Solution


    Are you new to the company, datacenter or a third party who is responsible for deploying a fleet of servers from scratch. The first step is to normally login to the KVM so you can perhaps manually reinstall, PXE boot the Cloud Image or reimage/reinstall an OS but you need access to the KVM/IP or what Dell calls iDRAC. It's common that you may have forgotten this information or that another employee or colleague has changed the info and did not tell you, that they have left the........
  • Juniper JunOS Command Overview and Howtos Switch, Router, Firewall Tutorial Guide


    Enable "cli" mode equivalent in JunOS cli Configure Mode configure So rather than going to the console on a Cisco switch and typing "enable" and then "conf t", the equivalent in JunOS is "cli" and "configure". How Do You Apply Changes You've Made? You can make all kinds of changes to the switch, but remember they are not........
  • bind / named how to make a wildcard record and retain defined A records


    It is almost as intuitive as we would like it is just a *. So literally: *INA 127.0.0.1 Complete working bind zonefile below: $TTL 86400 @ IN SOA ns.rtt.ca. ns2.rtt.ca. ( 1247605715; Serial &n........
  • bash if statement with wildcard string matching


    In this case if fullurl started with http://www. then it is a match Note that you CANNOT put quotes around it or it becomes a literal match which will not work as intended in the bash script example below. if [[ $fullurl == http://www.* ]]; then echo "do something" fi Another example say we want to delete every file or dir in a path except sometihng that starts with "hellothere": for file in `l........
  • How to use nmap locate other machines/computers/servers on your network using nmap


    A lot of people think arp wil do it but the arp table will only show devices you have communicated with. Using nmap is a quick and simple way to scan a range to find a machine you may not know the IP for: eg: nmap -sP 10.1.5.0/24 Just change the above to your subnet........
  • PHP Displaying Blank Page on Apache


    Almost always the reason will be that the php.so file is missing but also that php.conf is misconfigured. In the problem machine it is actually PHP7 installed so if you reference PHP5 of course things wil be broken! Take for example here: cat /etc/httpd/conf.d/php.conf # # PHP is an HTML-embedded scripting language which attempts to make it # easy for developers to write dynamica........
  • MySQL Add multiple IPs for remote user including root howto


    To grant the IP 192.168.2.4 to user mysqlguy GRANT ALL ON *.* TO 'mysqlguy'@'192.168.2.4'; To allow any IPfor mysqlguy just use the wildcard % character GRANT ALL ON *.* TO 'mysqlguy'@'%'; Also note it is normal and fine to have multiple entries in the mysql table.........
  • Linux how to whois query other gTLDs such as .club solution


    whois in Linux is incredibly out of date and does not seem to recognize most new TLDs domains, but there is a quick and easy tip/hack/tweak for this. An example of new TLD's site as .review .site .club whois somesite.club No whois server is known for this kind of object. bash to the rescue Now I did try to apply this in .bashrc but DONOT! Ithink the * wil........
  • MySQL Allow Access from Remote Host IP and Update All Users


    Change Host="192.168.5.99" with the remote IP allowed(this is of course more secure but also cumbersome if your IP changes). You could also have a single layer of protection that specifies the IP via firewall or both (of course both are far mor secure). UPDATE user SET Host="192.168.5.99" where Host="localhost" or for any/wildcard UPDATE user SET Host="%" where Host="localhost&qu........
  • Avocent 8020 KVM Java Icedtea Viewer


    This command in Debian/Ubuntu/Mint will get everything need installed for most Java based KVM viewers: sudo apt install icedtea-netx The following additional packages will be installed: ca-certificates-java icedtea-netx-common openjdk-8-jre openjdk-8-jre-headless It seems every other updated version of Java or Icedtea breaks things and I will save the frustration of Java for another post.........
  • bash script how to do wildcard string comparisons or matching


    This is a feature that works very well in bash and is easy to do: *Remember you need the double brackets for this specific test even though a normal if would not require them variable="hi there" if [[ "$variable" = hi* ]]; then echo "yes it contains hi" fi........
  • bash script linux how to do a wildcard string comparison


    if [[ "$templatesource" == *windows* ]]; then partition=/dev/sda2 fi The * before and after * windows will match this "Ihavelotsofwindowshere" Of we could have used "windows*" and anything that starts with "windows" will be matched etc...........
  • find only directory names in Linux


    find / -name 'thedirectorytofind' -type d That's all there is to it and now you don't have to get a listing of all the files along with it. Another cleaner solution that supports wildcards is the following find prep-*/dvd-slideshow_temp*/ -type d ........
  • How To Test If Your Hard Drive Is Good/Signs of dying hard drive


    I like dd, although it only reads it, usually a read test of the entire disk will uncover if your hard drive is bad in some parts. This is a good thing to do at least once a month, a lot of times bizarre program behavior, laginess and crashing/unnmounting problems etc.. are due to a failing disc and SMART won't know it or indicate a problem: We must also remember there's never a guarantee, I've found that ever since we moved to larger and more platters per drive with 1TB drives........
  • SATA Power cable for 1U Server Solutions - Rosewill 8" SATA Power Cable Model RC-8"-PW-4P-2SA


    NewEgg is one of the few companies that stocks this great right angle 1U SATA power cable. I've purchased some no-name ones and they face the wrong way (towards the bottom of the chassis) which makes it worse/impossible than standard SATA connectors. The price is high but if you're building a 1U server and want SATA disks and don't have much space (eg. the 1U Supermicro cases) then these are simply a must and........
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