ubuntu clear history command
时间: 2023-07-05 14:04:40 浏览: 47
To clear command history in Ubuntu, you can use the following command:
```
history -c
```
This will clear your command history in the current terminal session. To clear your entire command history for all terminal sessions, you can delete the `~/.bash_history` file:
```
rm ~/.bash_history
```
Note that this will permanently delete your command history and it cannot be undone.
相关问题
ubuntu history
在Ubuntu系统中,history命令用于显示用户在终端窗口中执行的命令历史记录。然而,默认情况下,Ubuntu系统提供的history命令不完全满足我们的需求,因为它无法追踪同事的误操作或入侵后的线索。根据引用的建议,我们可以通过修改/etc/profile文件来改善这个问题。
首先,按照引用中的提示,我们可以创建一个脚本,其中包含以下内容:
```
USER_IP=`who -u am i 2>/dev/null| awk '{print $NF}'|sed -e 's/[()]//g'`
if [ "$USER_IP" = "" ]
then
USER_IP=`hostname`
fi
if [ ! -d /opt/history ]
then
mkdir /opt/history
chmod 777 /opt/history
fi
if [ ! -d /opt/history/${LOGNAME} ]
then
mkdir /opt/history/${LOGNAME}
chmod 300 /opt/history/${LOGNAME}
fi
export HISTSIZE=4096
export HISTTIMEFORMAT="[%Y-%m-%d %H:%M:%S "
export HISTFILE="/opt/history/${LOGNAME}.history"
chmod 600 /opt/history/*history* 2>/dev/null
```
这个脚本的作用是创建一个目录用于存储命令历史记录,并设置适当的权限。同时,它还定义了历史记录的大小和格式,并将历史记录文件保存在用户特定的目录中。
通过运行以上脚本,我们就可以实现对Ubuntu系统中的history命令的改进。这样,我们就能更好地追踪和管理终端窗口中执行的命令历史记录。如果你需要更详细的指导,请参考引用中提供的链接。
ubuntu ip: command not found
The error message "ubuntu ip: command not found" indicates that the "ip" command is not found on your Ubuntu system.
The "ip" command is used to manage network interfaces and routing tables on Linux systems. It is included in the "iproute2" package, which should be installed by default on most Ubuntu systems.
To resolve this issue, you can try installing the "iproute2" package using the following command:
```
sudo apt-get install iproute2
```
If the package is already installed, you may need to check your system's PATH environment variable to ensure that the directory containing the "ip" command is included. You can do this by running the following command:
```
echo $PATH
```
This will display a colon-separated list of directories where your system looks for executable files. Make sure that the directory containing the "ip" command (usually "/sbin" or "/usr/sbin") is included in the PATH variable. If it is not, you can add it using the following command:
```
export PATH=$PATH:/sbin:/usr/sbin
```
This will add "/sbin" and "/usr/sbin" to the end of the PATH variable. Note that this will only modify the PATH variable for the current shell session. To make the change permanent, you will need to add the export command to your shell's startup files (such as "~/.bashrc" or "~/.bash_profile").
相关推荐
![deb](https://img-home.csdnimg.cn/images/20210720083646.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)