Common System Files
| File | AIX | Linux |
| Password file | /etc/passwd | /etc/passwd |
| Encrypted password file | /etc |
/etc/shadow |
| Error logs |
/var/adm/ras/errpt
/var/adm/messages
|
/var/log/messages
|
Group files
|
/etc/group
/etc/security/group
|
/etc/group
/etc/gshadow
|
| Secure login |
/etc/security/user
|
etc/securetty |
| DNS | /etc/resolv.conf
/etc/netsvc.conf
|
/etc/resolv.conf
/etc/nsswitch.conf
|
| Hosts file | /etc/hosts | /etc/hosts |
| Services | /etc/services | /etc/services |
| Kernel | /usr |
/boot/vmlinuz |
| Device files | ODM at /etc/objrepos | /dev |
| Inittab | /etc/inittab | /etc/inittab |
| inetd.conf | /etc/inetd.conf | /etc/inetd.conf |
| File systems | /etc/filesystems | /etc/fstab |
| Networking |
ODM database at
/etc/objrepos
|
/etc
/etc
/etc
|
NFS exports
|
/etc/exports | /etc/exports |
| System environment |
/etc/environment
|
/etc/profile
/etc/bash.bashrc
|
Common User-related
|
/etc/security/user | /etc |
| New user profile | /etc/.profile | /etc/skel/*.* |
| User limit | /etc/security/limits | /etc/security/limits.conf |
Specific Commands
| Action | AIX | Linux |
| Listing physical volumes (PV) | lspv | pvdisplay |
| List partitions in a disk | lspv -l <disk> | fdisk -l <disk> |
| List volume groups (VG) | lsvg | vgdisplay |
| Create volume group | mkvg | vgcreate |
| Remove volume group | rmvg | vgremove |
| Add a PV to VG | extendvg | vgextend |
| Remove a VG definition | exportvg | vgexport |
| Remove a PV from VG | reducevg | vgreduce |
| Import VG | importvg | vgimport |
| Activate VG | varyonvg | vgchange |
| List logical volume (LV) | lslv | lvdisplay |
| Create LV | mklv | lvcreate |
| Grow filesystems with LV | chfs | resize_reiserfs and resize2fs |
| Shrink filesystem | chfs | resize_reiserfs and resize2fs |
| Paging/Swap | lsps -a | procinfo
cat /proc/swaps
|
| OS level | oslevel |
uname -a
cat /etc/SuSE-release
cat /etc/redhat-release
|
| Run level | who -r | runlevel |
| Uptime | uptime | uptime |
| Performance | vmstat, ps, sar, topas, and nmon | vmstat, ps, sar, top, and nmon (if installed) |
| List installed filesets | lslpp -l | rpm -qa |
| Which fileset a file is in | which_fileset <name> | rpm -qf <path/name> |
| Verify installed filesets | lppchk -v | rpm -V <package> |
| List files in a fileset/package | lslpp -f <fileset> | rpm -ql <package> |
| List running kernel modules | genkex | lsmod |
| Insert module | N/A (dynamic) | insmod and modprobe |
| Unload modules | N/A (dynamic) | rmmod and modprobe |
| List memory installed | bootinfo -r | free, procinfo, and cat /proc/meminfo |
| Create users | mksuer | useradd |
| Change user details | chuser | usermod and chage |
| Delete users | rmuser | userdel |
| Create groups | mkgrp | groupadd |
| Change group details | chgrp | groupmod |
| Delete group | rmgrp | groupdel |
| Install software | installp, smitty install, rpm, and geninstall | rpm -iv, yast -i, yast2 and yum install |
| Update software | smitty update_all, installp, and rpm | rpm -Uv, yast2 and yum |
| Remove software | smit install, and rpm | rpm -e, yast2 and yum |
| IP configuration | smitty tcpip | yast2 network (SUSE) /etc |
| IP alias | ifconfig en# alias <IP> | ifconfig eth#:1<IP> |
| Network interfaces | netstat -in | ifconfig |
| Network routes | netstat -rn | netstat -rn, route |
| staticroutes | smitty route | /etc |
| Network options | no -a | sysctl -a |
| Error logs | errpt and alog | syslog, evlog, tail /var/log/messages and dmesg |
| Start daemons | startsrc -s (SRC Controlled) | rc.svc_name start, chkconfig, /etc service <name> start |
| Stop daemons | stopsrc -s | rc.svc_name stop, chkconfig, /etc service <name> stop |
| Refresh daemons | refresh -p | rc.svc_name restart, /etc service <name> restart |
| Shutdown halt | shutdown -h | shutdown -h |
| Fast reboot | shutdown -Fr | shutdown -r now |
| System dump | sysdumpdev -l | N/A |
| Kernel tuning | vmo (virtual memory) schedo (scheduler) no (network) |
sysctl |
| Change kernel | Change link in /usr |
Change in /etc/yaboot.conf |
| Boot image | bosboot | lilo (SUSE) |
| Change bootlist | bootlist | N/A |
| System boot messages | alog | dmesg |
