Architecture of UNIX / Linux Operating System:




Kernel is the heart of an Operating System. It can be analogous to an engine of a car. Kernel is "the operating system".


History of Linux

In short, Linux was born when UNIX was made as closed source by its founding company, AT&T. For a short of time UNIX was a open source operating system. 


Comments

Post a Comment

Popular posts from this blog

AIX migration using alt_disk method

  NIM migration with mksysb and alt_disk_mksys: On client: 1. Update alt_disk filesets to new version. 2. Unmirror rootvg and free up the disk. 3. Create mksysb image locally on NIM client and then copy it to NIM server. On NIM master: 1. Create mksysb resource from mksysb 2. Migrate mksyb to the new AIX level 3. Copy this migrated mksysb image to the NIM client. On Client: 1. Restore that migrated mksysb image to the free disk using alt disk 
Read more

HMC - List the Port VLAN IDs and Additional VLAN IDs ( tagged ) associated with the NICs of a LPAR.

 From HMC list the Port VLAN IDs and Additional VLAN IDs ( tagged ) associated with the NICs of a LPAR. Syntax is: #lshwres  -m      <Managed System> -r     <virtualio> --rsubtype     <eth> --level <lpar>  --filter "lpar_ids=" -F     slot_num:port_vlan_id:addl_vlan_ids -- header So the complete command in our case is: #lshwres -m USPLSVXPHXD002 -r virtualio --rsubtype eth --level lpar --filter lpar_names=dr-xprtam02 -F slot_num:port_vlan_id:addl_vlan_ids --header   hscroot@uxplxaophxd002:~> lshwres -m USPLSVXPHXD002 -r virtualio --rsubtype eth --level lpar --filter lpar_names=dr-xprtam02 -F slot_num:port_vlan_id:addl_vlan_ids --header slot_num:port_vlan_id:addl_vlan_ids 2:643: 3:511: 4:959:734 5:14: hscroot@uxplxaophxd002:~>
Read more