Commands Summary

Unix	Powershell
alias (set aliases)	set-alias
alias (show aliases)	get-alias
apropos	get-help
basename	dir | select name
cal	See commands detail
cd	cd
clear	clear-host
date	get-date
date -s	set-date
df -k	Get-WMIObject Win32_LogicalDisk | ft -a
diff	Compare-Object -ReferenceObject (Get-Content file1) -DifferenceObject (Get-Content file2)
dirname	dir | select directory
du	See commands detail
echo	write-output
echo -n	write-host -nonewline
| egrep -i sql	| where {[Regex]::Ismatch($_.name.tolower(), "sql") }
egrep -i	select-string
egrep	select-string -casesensitive
egrep -v	select-string -notmatch
env	Get-ChildItem Env: | fl or get-variable
errpt	get-eventlog
export PS1="$ "	function prompt {"$ " }
find	dir whatever -recurse
for (start, stop, step)	for ($i = 1; $i -le 5; $i++) {whatever}
head	gc file.txt | select-object -first 10
history	get-history
history | egrep -i ls	history | select commandline | where commandline -like 'ls' | fl
hostname	hostname
if-then-else	if ( condition ) { do-this } elseif { do-that } else {do-theother}
if [ -f "$FileName" ]	if (test-path $FileName)
kill	stop-process
less	more
locate	no equivalent but see link
ls	get-childitem OR gci OR dir OR ls
ls -a	ls -force
lsusb	gwmi Win32_USBControllerDevice
mailx	send-mailmessage
man	get-help
more	more
mv	rename-item
pg	more
ps -ef	get-process
ps -ef | grep oracle	get-process oracle
pwd	get-location
read	read-host
rm	remove-item
script	start-transcript
sleep	start-sleep
sort	sort-object
sort -uniq	get-unique
tail	gc file.txt | select-object -last 10
tail -f	gc -tail 10 -wait file.txt
time	measure-command
touch - create an empty file	set-content -Path ./file.txt -Value $null
touch - update the modified date	set-itemproperty -path ./file.txt -name LastWriteTime -value $(get-date)
wc -l	gc ./file.txt | measure-object | select count
whoami	[Security.Principal.WindowsIdentity]::GetCurrent() | select name
whence or type	No direct equivalent, but see link
unalias	remove-item -path alias:aliasname
uname -m	Get-WmiObject -Class Win32_ComputerSystem | select manufacturer, model
uptime	get-wmiobject -class win32_operatingsystem | select LastBootUpTime
(line continuation)	` (a backtick)