*comparisons made between Oracle Solaris & Linux (Red Hat variants), and operation based.
|Default Shell||/bin/bash (/bin/sh would typically symlinked to bash)||/bin/sh|
|Ext2/3/4 or XFS (RHEL 7)|
UFS - Unix File System and VxFS,QFS & ZFS (Solaris 10 onwards) also supported.
|/proc||Holds system hardware, proces details, kernel and tunnable files.||Only holds process details (can't tuneup kernel parameters here). There is /platform directory which hold system (h/w) details.|
|Log Files||Usually under /var/log||/var/log stores syslog and authlog files. /var/adm stores messages file.|
|Package Add/Remove||rpm -i & rpm -e (otherwise using "yum")||pkgadd & pkgrm|
|Logical Volume On Boot||LVM and RAID are supported during installation.||No LVM & RAID option during installation.|
|Auto-Install||Kickstart (RHEL) & AutoYAST(SLES)||Jumpstart|
|Device Creation||udev would manage device creation dynamically.||devfsadm|
|Partition Creation Commands||fdisk or parted||format or fmthard|
|Create Filesystem Command||mkfs or mkfs.ext3 or mke2fs -j or parted||newfs or mkfs|
|/tmp||It is disk file system and peristent across reboots.||This is a virtual file system based on tmpfs.|
|Swap Commands||mkswap & swapon||Using "swap" commands|
|Processor Details||Using commands "mpstat", "lscpu" or "cat /proc/cpuinfo" or "dmideocde -t processor"||psrinfo or mpstat|
|Current Procesess||One could use "ps -ef" or "top" to get all the details.||Using "prstat" command|
|File System Mount Table||/etc/fstab||/etc/vfstab|
|Memory (RAM) Details||Using "free", "cat /proc/meminfo", "dmidecode --type memory"||Using "prtconf" command|
|Start Service||Using "service <servicename> start/restart/stop"||Using "svcs" commands and "svcadm enable/disable <servicename>"|
|Change In Runlevel||"init 5" switches to GUI mode.||"init 5" would shutdown a system.|
|Major Vendors||Red Hat (RHEL/CentOS/CoreOS/Fedora), Novel (SUSE), Canonical (Ubuntu), Oracle (OEL), Patrick Volkerding (Slackware), BOSS (Bharat Operating System Solutions) etc.||Oracle Corp (originally developed by Sun Microsystems).|
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