If you need to know the number of instances of a particular
process running on a Microsoft Windows system, you can see all of the
instances by using the tasklist /fi option to filter the output from the
tasklist command by
imagename. E.g., I could view information on the
PuTTY
processes currently running on a Windows system with the command below:
C:\>tasklist /fi "IMAGENAME eq putty.exe" Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ putty.exe 57380 Console 1 4,404 K putty.exe 49012 Console 1 3,584 K putty.exe 72424 Console 1 3,060 K putty.exe 8028 Console 1 3,992 K putty.exe 96136 Console 1 4,632 K putty.exe 102860 Console 1 2,936 K putty.exe 87200 Console 1 4,572 K putty.exe 121020 Console 1 2,908 K putty.exe 100348 Console 1 4,228 K putty.exe 81692 Console 1 3,068 K putty.exe 118448 Console 1 2,020 K putty.exe 102856 Console 1 2,544 K putty.exe 126692 Console 1 4,332 K putty.exe 133004 Console 1 3,664 K putty.exe 136344 Console 1 5,204 K putty.exe 126408 Console 1 3,620 K putty.exe 114896 Console 1 2,880 K putty.exe 132868 Console 1 2,972 K putty.exe 133048 Console 1 3,860 K putty.exe 139232 Console 1 3,732 K putty.exe 132756 Console 1 2,928 K putty.exe 136484 Console 1 3,576 K putty.exe 147964 Console 1 2,960 K putty.exe 142800 Console 1 6,136 K putty.exe 139192 Console 1 2,952 K putty.exe 32748 Console 1 2,896 K putty.exe 78048 Console 1 3,596 K putty.exe 113756 Console 1 3,304 K putty.exe 62572 Console 1 4,120 K putty.exe 17620 Console 1 3,376 K putty.exe 36156 Console 1 1,756 K putty.exe 86144 Console 1 3,528 K putty.exe 4600 Console 1 4,440 K putty.exe 46532 Console 1 6,048 K putty.exe 49572 Console 1 2,884 K putty.exe 69560 Console 1 3,268 K putty.exe 67948 Console 1 4,120 K putty.exe 139328 Console 1 2,948 K putty.exe 25888 Console 1 6,552 K putty.exe 119096 Console 1 3,676 K putty.exe 48572 Console 1 3,084 K putty.exe 132724 Console 1 6,720 K putty.exe 123480 Console 1 2,944 K putty.exe 148548 Console 1 3,704 K putty.exe 46280 Console 1 7,860 K putty.exe 146844 Console 1 4,648 K putty.exe 47612 Console 1 6,548 K putty.exe 84404 Console 1 3,060 K putty.exe 35920 Console 1 15,780 K putty.exe 91288 Console 1 14,832 K putty.exe 115612 Console 1 5,216 K putty.exe 85164 Console 1 6,972 K putty.exe 22796 Console 1 9,640 K putty.exe 87868 Console 1 15,596 K C:\>
If I don't want to manually count the instances, I can use the find command as shown below:
C:\>tasklist /fi "IMAGENAME eq putty.exe" | find /i /c "putty.exe" 54 C:\>
The /i option to the find command tells find that the
case
of letters is unimportant, i.e., it should match either lowercase or
uppercase letters. The /c option instructs it to display a
count for the number of matching lines it found.
If I want to put the count in a variable in a batch file, I can use the the command noted in Setting a Variable to be the Output of a Command.
Alternatively, you can use a Windows Management Instrumentation Command-line (WMIC) command. E.g.:
C:\>wmic process where name="putty.exe" get name | find /c "putty.exe" 54 C:\>
Related articles:
-
Obtaining a list of running processes and their associated PIDs
Date: April 8, 2017
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