The Windows PowerShell object is converted to text _powershell

Out-default can convert an object to visual text. In fact, Out-default will call Format-table first, and more properties will be hidden by default. Then call Out-host to output the result to the console. So the following three sets of command execution results are the same.

ls
ls | format-table | Out-host
ls | Out-default

Show hidden Object Properties

To view all properties of the object's results, use the
ls | Format-table *
This allows you to use text wrapping parameters because there are too many properties and properties that may not appear completely
ls | Format-table *-wrap

Format pipe Results

First, use the following command to view all commands that begin with format

PS c:powershell> get-command-verb format

commandtype   Name              Definition
-----------   ----              ----------
Cmdlet     format-custom          format-custom [[-property]
cmdlet     format-list           format-list [[- Property]
cmdlet     format-table          format-table [[-property]
cmdlet     format-wide           Format-wide [[-property]

Format-custom: Use a custom view to format the output.
Format-list: Formats the output as a list of properties, each of which is displayed in one row.
Format-table: Formats the output as a table.
Format-wide: Sets the object's format to a wide table that can display only one property of each object.

Displays the specified properties

To display the specified property, you first need to know the name of the property in the result object, for example:

PS c:powershell> ls | Format-table name,length,lastwritetime

Name            Length           lastwritetime
----            ------           ---------- ---
ABC                          2011/11/23 17:25:53
myscript                       2011/11/29 18:21:28           a.html 67580 2011/11/ 18:30:13
a.txt           26384           2011/11/24 20:04:31
alias           12060           2011/11/24 20:26:36

Using wildcard characters

For example, to see the current process with I, and show the name of the process and other processes that start with "PE" and End With "64″."

PS c:powershell> get-process i* | Format-table name,pe*64

Name        peakpagedmemorysize  PeakWorkingSet64 peakvirtualmemorysi                  Ze64
----         -------------------   -----------------------------------
Idle                 0          0          0
imecfmui           946176        4292608       48054272
imecmnt       1564672 5320704 65482752
imedictupdate       1224704       4579328       31965184

Script Block as a property

The length of the file in PowerShell is default to byte if you want it to output in kilobytes, consider the following method of envy.

PS c:powershell> ls | format-table name,{[int] ($_. LENGTH/1KB)}

Name            [int] ($_. LENGTH/1KB)
----            ----------------------
function.ps1
logotestconfig.xml           0
ls.html                     3
name.html                  7

Modify column headings

Using a composite property, if you use a script block as a caption, it's very unpleasant to see. You can use the lable setting. The same is the case above, slightly modified.

PS c:powershell> $column = @{expression={[int] ($_. LENGTH/1KB)}; Label= "KB"}
PS c:powershell> Dir | Format-table name, $column

name                    KB
----            ----------------------
function.ps1
Logotestconfig.xml           0
ls.html                     3
name.html

Optimize column width

Because most of the output of PowerShell is a real-time streaming pattern, the next result is unknown, and PowerShell results are distributed by default, so that the width of the console can be maximized, but the bandwidth of the column can be optimized by-auto parameters. Compares the maximum bandwidth of a property value to the width of each column:

PS c:powershell> ls

  directory: C:powershell

Mode        lastwritetime   Length Name
----        -------------   ----------
d----    2011/11/23   17:25      ABC
d----    2011/11/29   18:21      MyScript-a
---    2011/11/24   18:30   67580 a.html-a
---    2011/11/24   20:04   26384 a.txt
PS c:powershell> ls | Format-table-autosize

  directory: C:powershell

Mode     lastwritetime Length Name
----     ------------- ----------
D----2011/11/23   17:25    ABC
d----2011/11/29   18:21    myscript
-a--- 2011/11/24   18:30 67580 a.html