Unix & Windows Random commands

Unix
dmidecode -s system-product-name;lspci | grep -i vmware
dos2unix
yum update -x kernel
df -Ph
lsb_release -a
nohup ./script.sh & (continuously run)
stat file or ls -il file for inode
script -a /tmp/filename
ntpq -pn l ntpupdate
rpcinfo -p
ntsysv --level3
modprobe ;lsmod;modinfo
W;tty
ldd (packages dependencies)
rpm2cpio *.rpm |cpio -ivd
rpm -Uvh --rollback '1 hour ago'
rpm -Uvh --rollback 'March 20'
yum history rollback 46
yum history info 46
yum history undo 46
yum history repeat 46

Remotely Force a Reboot:
If you need to remotely hard-reset your Linux system because of a read-only file system, try Magic SysRq:

# echo 1 >/proc/sys/kernel/sysrq ; echo b >/proc/sysrq-trigger

This will enable SYSRQ and power cycle the system, like hitting the reset button. This is obviously a last resort, only when a clean shutdown will not work.

Windows 
  
1.wmic os get osarchitecture ; wmic os get Name ;msinfo32
2.wmic os where primary= true call reboot ; shutdown -r -t 10
3.systeminfo |find /I "system type"   
systeminfo | findstr /C:"Total Physical Memory" 
4.mstsc /v:0.0.0.0 /f /console ;mstsc /v:0.0.0.0 /f /admin  
5.  Remove dir older than 7 days:
c:\bin\UnixUtils\find -maxdepth 1 -type d -mtime +6 -exec c:\bin\unixutils\rm -rfv {} ;