The mount
command shows information about your mounted partitions on your machine.
iMac305:~ admin$ mount /dev/disk0s2 on / (hfs, local, journaled) devfs on /dev (devfs, local, nobrowse) map -hosts on /net (autofs, nosuid, automounted, nobrowse) map auto_home on /home (autofs, automounted, nobrowse) map -fstab on /Network/Servers (autofs, automounted, nobrowse) /dev/disk0s3 on /Volumes/Scratch (hfs, local, journaled) |
Use the w
command to get information about logged in users.
iMac305:~ admin$ w 13:57 up 1:34, 2 users, load averages: 0.22 0.51 0.71 USER TTY FROM LOGIN@ IDLE WHAT admin console - 12:23 1:33 - admin s000 - 12:32 - w |
The UNIX finger -lmps
command may be used on a Mountain Lion OSX machine to get information about your user.
iMac305:~ admin$ finger -lmps Login: admin Name: Admin Directory: /Users/admin Shell: /bin/bash On since Tue 6 May 12:23 (EST) on console, idle 1:34 (messages off) On since Tue 6 May 12:32 (EST) on ttys000 No Mail. |
Here is an alternative command to get brief information about your user.
iMac305:~ admin$ who am i admin ttys000 May 6 12:32 |
This command: ps x
will list all running processes.
iMac305:~ admin$ ps x PID TT STAT TIME COMMAND 304 ?? Ss 0:00.15 /sbin/launchd 308 ?? S 0:00.19 /usr/sbin/distnoted agent 313 ?? S 0:00.29 /usr/libexec/UserEventAgent -l Aqua 317 ?? S 0:00.14 /System/Library/CoreServices/talagent 318 ?? S 0:01.29 /System/Library/CoreServices/Dock.app/Contents/MacOS/Dock 319 ?? S 0:00.66 /System/Library/CoreServices/SystemUIServer.app/Contents/MacOS/SystemUIServer 320 ?? S 0:03.36 /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder 324 ?? S 0:00.62 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ATS.framework/Support/fontd 327 ?? Ss 0:00.13 com.apple.dock.extra 328 ?? S 0:00.01 /usr/sbin/pboard 331 ?? SN 0:00.01 /usr/libexec/warmd_agent 336 ?? S 0:00.21 /System/Library/PrivateFrameworks/IMCore.framework/imagent.app/Contents/MacOS/imagent 341 ?? S 0:00.14 /Library/Application Support/Symantec/SymQuickMenu/SymQuickMenu.app/Contents/MacOS/SymQuickMenu 346 ?? S 0:00.06 /Library/Application Support/Symantec/AntiVirus/SAVDiskMountNotify.app/Contents/MacOS/SAVDiskMountNotify -psn_0_61455 347 ?? S 0:00.05 /Library/Application Support/Symantec/AntiVirus/ScanNotification.app/Contents/MacOS/ScanNotification -psn_0_69649 348 ?? S 0:00.05 /Library/Application Support/Norton Solutions Support/Scheduler/SymSecondaryLaunch.app/Contents/MacOS/SymSecondaryLaunch -psn_0_73746 351 ?? S 0:00.05 /Applications/iTunes.app/Contents/MacOS/iTunesHelper.app/Contents/MacOS/iTunesHelper -psn_0_81940 352 ?? S 0:00.97 /Applications/Utilities/Adobe Application Manager/UWA/AAM Updates Notifier.app/Contents/MacOS/AAM Updates Notifier -psn_0_86037 581 ?? R 0:03.20 /Applications/Utilities/Terminal.app/Contents/MacOS/Terminal -psn_0_122910 669 ?? S 0:28.45 /Applications/Firefox.app/Contents/MacOS/firefox -psn_0_188462 693 ?? SN 0:00.12 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker -s mdworker -c MDSImporterWorker -m com.apple.mdworker.pool.0 695 ?? S 0:00.01 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/Support/cookied 700 ?? S 0:04.40 /System/Library/CoreServices/UserNotificationCenter.app/Contents/MacOS/UserNotificationCenter 584 s000 Ss 0:00.02 login -pf admin 585 s000 R 0:00.02 -bash 721 s000 R+ 0:00.00 ps x |
And this is how to show the amount of remaining disk space on your iMac machine. Use the df -Hla
command.
iMac305:~ admin$ df -Hla Filesystem Size Used Avail Capacity Mounted on /dev/disk0s2 300G 140G 159G 47% / /dev/disk0s3 700G 630M 699G 1% /Volumes/Scratch |
Here is a one-liner that will only print the IP address of your iMac machine.
iMac305:~ admin$ ifconfig | grep "inet " | cut -d' ' -f2 | awk 'FNR == 2 {print}' 172.18.31.60 |
That is a very useful command for a systems administrator.
How to find the IP address assigned to eth0 and display IP only.
http://www.cyberciti.biz/faq/how-to-find-out-the-ip-address-assigned-to-eth0-and-display-ip-only/
How to select row and element in awk.
http://stackoverflow.com/questions/1506521/select-row-and-element-in-awk