zebra barcode printer vb net Using top Using ps in Software

Create Code 128 in Software Using top Using ps

Using top Using ps
Generate Code128 In None
Using Barcode creator for Software Control to generate, create Code 128 Code Set A image in Software applications.
Code-128 Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Let s begin by looking at the top utility
Paint Code 128 Code Set C In C#.NET
Using Barcode maker for .NET Control to generate, create Code 128 Code Set B image in .NET framework applications.
Code128 Maker In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
Using top
Code-128 Maker In .NET
Using Barcode drawer for VS .NET Control to generate, create Code 128B image in .NET framework applications.
Paint Code-128 In Visual Basic .NET
Using Barcode creator for .NET framework Control to generate, create Code 128 Code Set A image in .NET applications.
Linux provides a wide variety of tools for viewing running processes on your system One of my favorites is the venerable top utility You run top by simply entering top at the shell prompt When you do, the interface shown in Figure 10-9 is displayed In Figure 10-9, you can see that top displays some of your running processes, one on each line The following columns are used to display information about each process:
DataMatrix Printer In None
Using Barcode printer for Software Control to generate, create Data Matrix 2d barcode image in Software applications.
Creating Bar Code In None
Using Barcode drawer for Software Control to generate, create barcode image in Software applications.
PID USER PR NI
Barcode Drawer In None
Using Barcode generation for Software Control to generate, create bar code image in Software applications.
Create UCC - 12 In None
Using Barcode generation for Software Control to generate, create EAN128 image in Software applications.
The process ID of the process The name of the user that owns the process
EAN-13 Supplement 5 Creator In None
Using Barcode creator for Software Control to generate, create EAN-13 Supplement 5 image in Software applications.
Draw Code 128 Code Set A In None
Using Barcode printer for Software Control to generate, create Code 128B image in Software applications.
The priority assigned to the process (We ll discuss process priorities later in this chapter) This is the nice value of the process (We ll talk about what this means later in this chapter) The amount of virtual memory used by the process The amount of physical RAM the process is using (its resident size) in kilobytes
Generate ISBN In None
Using Barcode creator for Software Control to generate, create International Standard Book Number image in Software applications.
Making Linear 1D Barcode In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create 1D image in .NET applications.
VIRT RES
GS1 - 13 Recognizer In VB.NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
ECC200 Generation In C#
Using Barcode drawer for VS .NET Control to generate, create Data Matrix image in VS .NET applications.
Manage Running Processes
Printing Data Matrix In None
Using Barcode creation for Font Control to generate, create Data Matrix 2d barcode image in Font applications.
Draw GS1 - 13 In Objective-C
Using Barcode generator for iPad Control to generate, create European Article Number 13 image in iPad applications.
SHR S D R S T Z
Generating Code 128A In Java
Using Barcode creation for Java Control to generate, create Code 128A image in Java applications.
Recognizing Barcode In Visual C#.NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in .NET applications.
The amount of shared memory used by the process Uninterruptibly sleeping Running Sleeping Traced or stopped Zombied
The status of the process Possible values include:
FIGURE 10-9
Using top to view running processes
10: Managing Linux Processes and Services
A zombied process is one where the process has finished executing and exited, but the process parent didn t get notified that it was finished and hasn t released the child process PID A zombied process may eventually clear up on its own If it doesn t, you may need to manually kill the parent process We ll talk about how to do this later in the chapter
%CPU %MEM TIME+
The percentage of CPU time used by the process The percentage of available physical RAM used by the process
The total amount of CPU time the process has consumed since being started The name of the command that was entered to start the process
COMMAND
The key aspect I like about top is that it s dynamic The screen is constantly updated to reflect the latest information about each process You can sort the information as well By pressing while top is running, you can display the help screen, which provides you with the keystrokes required to sort by a particular category This help screen is shown in Figure 10-10
FIGURE 10-10
Viewing the top help screen
Manage Running Processes
This screen also shows you how to use other options with top For example, you can press to display a list of columns that you can add to the display, as shown in Figure 10-11 Fields that will be displayed are indicated with an asterisk (*) To add or remove a field, just press the appropriate letter This will toggle the asterisk on or off to determine whether or not the field is displayed You can also press to specify that only the processes associated with a specific user be displayed I really like top The only thing I don t like about it is that it only shows the top few processes on your system There will be times when you need to see everything running on your system In this situation, top just doesn t cut it You need to use the ps utility
FIGURE 10-11
Adding columns to the top display
10: Managing Linux Processes and Services
Using ps
The ps utility can be used to display running processes on your system Unlike top, which displays processes dynamically, ps displays a snapshot of the current processes running
As good a utility as it is, you however, be expected to know how to use probably won t see many, if any, questions the ps utility on the Linux+ exam covering top You will, By simply entering ps, the processes associated with the current shell are displayed, as shown in Figure 10-12 In Figure 10-12, the following processes are displayed by ps:
su bash ps
The su utility is in use inside this shell to switch to the root user account The current bash shell session Because ps was in use to list current processes, its process is also listed
Notice that the following information is displayed by default:
Copyright © OnBarcode.com . All rights reserved.