Programmer Group

Using StrongSwan to study IPSec is a good practice to understand IPSec. However, there are so many pits in the process of using Strong Swan, and there are so many incomplete online tutorials that I can hardly explain every step thoroughly, which leads me to scratch my ears and cheeks in the process of using Strong Swan. Programmers naturally w ...

Examples: echo "[${_LogFlag}]:$(date "+%Y%m%d.%H%M%S"):${Use}@${Host}:${2}"|tee -a "${LogFile}"; 1.tee command The tee command is used to redirect data to files. On the other hand, it can provide a copy of redirected data as stdin for subsequent commands. Simply put, redirect data to a given file and screen. There is a caching mechani ...

Chapter 1 On-line Server Operational Specification Chapter 2 Mass Creation of User Cases 1. The first method sed The first method is: sed [root@Never-downtime ~]# echo stu{01..10}|xargs -n1|sed 's#.*#useradd &;echo 123456|passwd --stdin &#g' useradd stu01;echo 123456|passwd --stdin stu01 useradd stu02;echo 123456|passwd --stdin ...

brief introduction When you learn Linux, you need to learn partitions in Linux. Learning Linux partitioning, there are many conceptual things to learn, such as partition type, file system type, etc. Wait a minute. For me, I don't like this kind of conceptual thing very much. It's not at all friendly for me to come up with a large paragraph of ...

First, let's simulate the environment. The following image uses VMware to add a 300G (actual 200M~~manual funny--) hard disk device to me. Add them step by step.You need to restart your virtual machine after adding it to take effect. OK, then we have the environment.I have installed a 300G (200M) hard disk for our Server. Now let's mount it u ...

There are three places where macOS is most likely to generate spam files: Xcode, iTunes and VMWare virtual machines. 1. Garbage generated by Xcode On the command line, cd to the ~/Library directory, enter the command: sudo du -d 1 -h Seeing that Developer occupies 59 G, cd to Developer directory continues to locate large files with the du com ...

Recently, due to too much software installed under the virtual machine, the problem of insufficient disk space pops up from time to time. Looked up a lot of information, there is no good solution. Friends send a link, or foreigners have conscience. The translation is put here and operated according to my actual needs, which achieves the de ...

When processing matched files with the - exec option of the find command, the find command passes all matched files together to exec for execution. But some systems limit the length of commands that can be passed to exec, so that overflow errors occur after the find command runs for a few minutes. Error messages are usually "parameter col ...

Links to the original text: http://t.cn/RzCP9E2 Translation source links: http://imcczy.com/how-to-expand-the-root-filesystem-in-vmware.html Reproduction Notes: Below this article is the operation of requiring partition. The operation of partition is different from that of normal system partition. It is necessary to specify the starting ...

<—> 1. The following error occurred while executing the service network restart Restarting network (via systemctl): Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details. 2. Execute "system CTL status network. service" to output similar information as follows: [root@localho ...