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    Starting points: (RE)Learning Linux commands

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    • gjacobseG
      gjacobse
      last edited by

      CentOS on C@C and local
      LinuxMint

      1 Reply Last reply Reply Quote 0
      • scottalanmillerS
        scottalanmiller
        last edited by

        Which CentOS? Version matters a bit.

        1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller
          last edited by

          First thing to do with any CentOS...

          yum -y install epel-release
          
          JaredBuschJ 1 Reply Last reply Reply Quote 0
          • scottalanmillerS
            scottalanmiller
            last edited by

            In CentOS you have YUM to make things easy. To install any software you just use...

            yum install softwarename
            
            1 Reply Last reply Reply Quote 0
            • scottalanmillerS
              scottalanmiller
              last edited by

              And to fully update your system just run....

              yum update
              
              1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller
                last edited by

                Be sure to install sysstat (System Stats) and htop (Horizontal TOP? Honestly, no idea what it stands for.)

                yum -y install sysstat htop
                
                coliverC 1 Reply Last reply Reply Quote 0
                • scottalanmillerS
                  scottalanmiller
                  last edited by

                  Once you have sysstat installed and it has sat around for ten minutes or more you will start to get details in your sar reports. This is one of the most important tools in your Linux arsenal. Once it has sat around you can see all kinds of details as to how it has been running....

                  sar
                  
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                  • coliverC
                    coliver @scottalanmiller
                    last edited by

                    @scottalanmiller said:

                    Be sure to install sysstat (System Stats) and htop (Horizontal TOP? Honestly, no idea what it stands for.)

                    yum -y install sysstat htop
                    

                    From http://hisham.hm/htop/index.php?page=faq:

                    What does the 'h' in 'htop' stand for?

                    Well, the short explanation is a little obvious: the "h" stands for "Hisham", my name. 🙂

                    The long explanation is that what inspired me to write htop was pinfo, an improved man and info reader that adds lots of features (in my machines 'man' is an alias to 'pinfo -m'). It was written by a guy called Przemek Borys. Since 'pinfo' was "a better info" and he named it "pinfo" ("Przemek's Info"), I decided to try to make "a better top" so I called it "htop" ("Hisham's top"). So yes, it is after my own name, but it's also a homage to another nice piece of software!

                    1 Reply Last reply Reply Quote 1
                    • scottalanmillerS
                      scottalanmiller
                      last edited by

                      And of course the uptime command is super handy.

                      -bash-4.2$ uptime
                       14:39:39 up 6 days, 16:17,  1 user,  load average: 0.27, 0.16, 0.15
                      
                      1 Reply Last reply Reply Quote 1
                      • gjacobseG
                        gjacobse
                        last edited by

                        Yum -
                        So one of the goals is to have ManageEngine running. I've uploaded the .bin file, WHile I know I didn't need to.. it's done..

                        would it be

                        yum - y install (filename)?

                        coliverC scottalanmillerS 2 Replies Last reply Reply Quote 0
                        • coliverC
                          coliver @gjacobse
                          last edited by

                          @g.jacobse said:

                          Yum -
                          So one of the goals is to have ManageEngine running. I've uploaded the .bin file, WHile I know I didn't need to.. it's done..

                          would it be

                          yum - y install (filename)?

                          http://www.manageengine.com/products/service-desk/help/adminguide/introduction/installation-linux.html#lin2

                          While I think YUM has a local installation option, I don't think it will work with bin files.

                          1 Reply Last reply Reply Quote 0
                          • scottalanmillerS
                            scottalanmiller @gjacobse
                            last edited by

                            @g.jacobse said:

                            Yum -
                            So one of the goals is to have ManageEngine running. I've uploaded the .bin file, WHile I know I didn't need to.. it's done..

                            would it be

                            yum - y install (filename)?

                            @g.jacobse said:

                            Yum -
                            So one of the goals is to have ManageEngine running. I've uploaded the .bin file, WHile I know I didn't need to.. it's done..

                            would it be

                            yum - y install (filename)?

                            @g.jacobse said:

                            Yum -
                            So one of the goals is to have ManageEngine running. I've uploaded the .bin file, WHile I know I didn't need to.. it's done..

                            would it be

                            yum - y install (filename)?

                            A bin is a binary, like a Windows installer. It's not an RPM, which is an installation file. To install a binary, on any OS, just run it.

                            gjacobseG 1 Reply Last reply Reply Quote 1
                            • gjacobseG
                              gjacobse @scottalanmiller
                              last edited by

                              @scottalanmiller
                              Not sure why that quoted three time...

                              I feel I hear Foghorn Leghorn's voice here... "No no no son,.. your don't it all wrong..."

                              doingitwrong.png

                              ? StrongBadS 2 Replies Last reply Reply Quote 0
                              • ?
                                A Former User @gjacobse
                                last edited by A Former User

                                @g.jacobse did you make it executable? Chmod +x file.bin
                                then run it as ./file.bin

                                1 Reply Last reply Reply Quote 0
                                • coliverC
                                  coliver
                                  last edited by

                                  should read:

                                  ./ManageEngine_ServiceDesk_Plus_64bit.bin
                                  

                                  You may also have to do chmod +x filename.

                                  1 Reply Last reply Reply Quote 1
                                  • StrongBadS
                                    StrongBad @gjacobse
                                    last edited by

                                    @g.jacobse said:

                                    @scottalanmiller
                                    Not sure why that quoted three time...

                                    I feel I hear Foghorn Leghorn's voice here... "No no no son,.. your don't it all wrong..."

                                    doingitwrong.png

                                    You are attempting to use a relative path, but the file is not in your path so it can't find it.

                                    1 Reply Last reply Reply Quote 0
                                    • JaredBuschJ
                                      JaredBusch @scottalanmiller
                                      last edited by JaredBusch

                                      @scottalanmiller said:

                                      First thing to do with any CentOS...

                                      yum -y install epel-release
                                      

                                      I completely disagree with this statement because it implies that the EPEL is required. Most of my servers are CentOS 7 minimal and do not have EPEL.

                                      There is NEVER a reason to always add stuff. There are often good reason for most servers, but there is never ALWAYS a reason.

                                      In fact Scott, this is completely contrary to your constant preaching that people should always do things because they are needed and not because they just should because some random internet person said so.f

                                      ? scottalanmillerS 2 Replies Last reply Reply Quote 0
                                      • ?
                                        A Former User @JaredBusch
                                        last edited by

                                        I would make sure you install NTP as well for server, with VMs this becomes even more important.

                                        1 Reply Last reply Reply Quote 0
                                        • scottalanmillerS
                                          scottalanmiller @JaredBusch
                                          last edited by

                                          @JaredBusch said:

                                          @scottalanmiller said:

                                          First thing to do with any CentOS...

                                          yum -y install epel-release
                                          

                                          I completely disagree with this statement because it implies that the EPEL is required. Most of my servers are CentOS 7 minimal and do not have EPEL.

                                          It's because of fail2ban being the next recommendation. It's for security reasons.

                                          JaredBuschJ 1 Reply Last reply Reply Quote 0
                                          • JaredBuschJ
                                            JaredBusch @scottalanmiller
                                            last edited by

                                            @scottalanmiller said:

                                            It's because of fail2ban being the next recommendation. It's for security reasons.

                                            This is a rationalization that again does not take everything into consideration.

                                            Example: There is no reason to deal with Fail2Ban on an internal device with no public facing ports. In an enterprise setting, maybe, but not in an SMB.

                                            As I said, there is often a reason, but not always..

                                            scottalanmillerS 1 Reply Last reply Reply Quote 0
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