- #Mac os x terminal clear history how to#
- #Mac os x terminal clear history mac#
- #Mac os x terminal clear history windows#
One of the most popular reasons for clearing your history in browsers is that your Mac is running slow.
#Mac os x terminal clear history how to#
You can find out how to delete your Safari search history, cookies, and cache from a Mac with the detailed guide below. You need to delete your Safari cache separately on each device. However, clearing your Safari history still leaves the cache taking up precious disk space. You can clear the whole of your Safari history or specific parts of it for a selected period of time or for all time. Similarly, deleting your Safari history will make it disappear on all of your connected devices. What’s more, if you ever need to find that site again, you can just look in your browser history rather than searching for it on Google.Īpple makes it easy to retrieve links from your history with Safari - if you use iCloud on your devices, you can access your history from any device signed in to your iCloud account. This speeds up the loading time for that website the next time you visit it. It also saves elements like the page’s URL, text, images, and lists of IP addresses in the browser cache. Monitor for an attempts by a user to gain access to a network or computing resource, often by providing credentials via remote terminal services, that do not have a corresponding entry in a command history file.When you visit a website, your browser records your visit in the browser history. Monitor for changes made to command history files, such as ConsoleHost_history.txt, ~/.zsh_history, or ~/.bash_history, for unexpected modifications to contents, access permissions, and attributes. Monitor for unexpected deletion of a command history file, such as ConsoleHost_history.txt, ~/.zsh_history, or ~/.bash_history. Monitor executed commands and arguments for actions that could be taken to clear command history, such as Clear-History on Windows, or to disable writing command history, such as history -c in bash/zsh. Preventing users from deleting or writing to certain files can stop adversaries from maliciously altering their ~/.bash_history or ConsoleHost_history.txt files. įorward logging of historical data to remote data store and centralized logging solution to preserve historical command line log data. Making the environment variables associated with command history read only may ensure that the history is preserved. TeamTNT has cleared command history with history -c. MenuPass has used Wevtutil to remove PowerShell execution logs. Lazarus Group has routinely deleted log files on a compromised router, including automatic log deletion through the use of the logrotate utility. Kobalos can remove all command history on compromised hosts. Hildegard has used history -c to clear script shell logs. ĪPT41 attempted to remove evidence of some of its activity by deleting Bash histories. Adversaries may also delete the ConsoleHost_history.txt file or edit its contents to hide PowerShell commands they have run. This, however, will not delete/flush the ConsoleHost_history.txt file. Īdversaries may run the PowerShell command Clear-History to flush the entire command history from a current PowerShell session.
This history file is available to all sessions and contains all past history since the file is not deleted when the session ends. The PSReadLine command history tracks the commands used in all PowerShell sessions and writes them to a file ( $env:APPDATA\Microsoft\Windows\PowerShell\PSReadLine\ConsoleHost_history.txt by default). This command history is not available to other sessions and is deleted when the session ends. The built-in history only tracks the commands used in the current session.
#Mac os x terminal clear history windows#
On Windows hosts, PowerShell has two different command history providers: the built-in history and the command history managed by the PSReadLine module. The benefit of this is that it allows users to go back to commands they've used before in different sessions.Īdversaries may delete their commands from these logs by manually clearing the history ( history -c) or deleting the bash history file rm ~/.bash_history.Īdversaries may also leverage a Network Device CLI on network devices to clear command history data.
When a user logs off a system, this information is flushed to a file in the user's home directory called ~/.bash_history. While logged in, this command history is tracked in a file pointed to by the environment variable HISTFILE. On Linux and macOS, these command histories can be accessed in a few different ways. Various command interpreters keep track of the commands users type in their terminal so that users can retrace what they've done. In addition to clearing system logs, an adversary may clear the command history of a compromised account to conceal the actions undertaken during an intrusion.