The next day he presented the program to McIlroy, who said it was exactly what he wanted. Responding that he would think about such a utility overnight, Thompson actually corrected bugs and made improvements for about an hour on his own program called s (short for "search"). Doug McIlroy, unaware of its existence, asked Thompson to write such a program. History īefore it was named, grep was a private utility written by Ken Thompson to search files for certain patterns. grep was originally developed for the Unix operating system, but later available for all Unix-like systems and some others such as OS-9. Its name comes from the ed command g/re/p ( global / regular expression search / and print), which has the same effect. Grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Unix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i The $MaximumHistor圜ount variable, see about_Preference_Variables.November 1973 49 years ago ( 1973-11)
#WINDOWS BASH GREP TO SEARCH HISTORY WINDOWS#
In Windows PowerShell 2.0, the default value is 64. Starting in Windows PowerShell 3.0, the default value of the $MaximumHistor圜ount preference As you enter eachĬommand, PowerShell adds it to the history so that you can reuse it. Represents the run order, the status, and the start and end times of the command. The session history is a list of the commands entered during the session. PowerShell includes the following aliases for Get-History: This cmdlet returns a history object for each history item that it gets. You can pipe a history ID to this cmdlet. Most recent entries ending with the entry specified by the Id parameter. If you use both the Id and Count parameters in a command, Get-History gets the
Specifies an array of the IDs of entries in the session history. Get-History | Format-List -Property * Parameters -Count This includes the ID, status, and start and end times of theĬommand. Passes the results of a Get-History command to the Format-List cmdlet, which displays all of the This example displays all of the properties of entries in the session history. Get-History -Count 1 Example 5: Display all the properties of the entries in the history This command can be abbreviated to "h -c 1" and isĮquivalent to pressing the up-arrow key. Get-History gets the most recent commands. This command uses the Count parameter to display just one command. The last command is the most recentlyĮntered command. This example gets the last command in the command history.
Get-History -ID 7 -Count 5 | Export-Csv History.csv Example 4: Display the most recent command This includes the status and start and end times of the command. The file includes the data that is displayed when you format the Passes the result to the Export-Csv cmdlet, which formats the history as comma-separated text and This example gets the five most recent history entries ending with entry 7. Get-History | Where-Object Example 3: Export history entries up to a specific ID Where-Object cmdlet, which selects only the commands that include service. The pipeline operator ( |) passes the results to the This example gets entries in the command history that include the string service. Get-History Example 2: Get entries that include a string ID, which indicates the order in which they ran. The default display shows each command and its This example gets the entries in the session history. Examples Example 1: Get the session history For more information see, about_PSReadLine. The session history is managed separately from the history maintained by the PSReadLine module.īoth histories are available in sessions where PSReadLine is loaded. For more information about the historyįeatures in PowerShell, see about_History. By default, history files are saved in the homeĭirectory, but you can save the file in any location. Windows PowerShell 3.0, the default value is 4096. History is determined by the value of the $MaximumHistor圜ount preference variable.
PowerShell automatically maintains a history of each session. The Get-History cmdlet gets the session history, that is, the list of commands entered during the Gets a list of the commands entered during the current session.
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