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awk report generator for Linux text processing three swordsmen 1, awk 1. General Origin: born in Bell Labs in the 1970s, CentOS 7 now uses gawk AWK is named because it took three founders Alfred Aho, Peter weinberger, And Brian Kernighan's Family Name. Overview: AWK is a language for processing text files and a powerful text analysis tool. ...

Tip: pay attention to give the virtual machine a large enough disk, more than 60G 1, Design ideas Download linux kernel source code Add the system call number to the system call table Write custom system call functions in the system call header file Modify the kernel source code and add the implementation of custom system call fu ...

1, Environmental description CentOS7；RocketMQ4.5.2；The firewall is closed; Virtual machine address:192.168.0.40，192.168.0.41，192.168.0.42，192.168.0.75； Because other things have been built on the virtual machine before, the alias will be specified this time, which can be accessed directly through ip and port; 2, Software descripti ...

Linux partition details It is divided into two parts 1. Hard disk partition when installing Linux system. 2. Linux add hard disk partition 1. Hard disk partition when installing Linux system. Usually, the hard disk is about 500G. 1.1 partitions that must exist /The partition that must exist when partitioning. All level-1 directories are ...

Thread identifier: we know that every Linux process has a pid, type pid_t. Obtained by getpid(). POSIX thread under Linux also has an id, type pthread_id, by pthread_self(), the id is maintained by the thread library, and its id space is independent of each process (that is, threads in different processes may have the same id). The thread imple ...

[Abstract] In the last chapter of the flash topic, we mainly explained the routing, exception handling and interface return of Web applications further. Although the code is more robust, it is still far from being used in the production environment. The most critical step is authentication. Authentication is a very important link in any inter ...

○ reference links 🔗 Product manual (zabbix.com) Zabbix Chinese document Windows agent installation from MSI 1, Introduction to Zabbix 🔊 🏆 Zabbix is an enterprise class open source solution that provides distributed system monitoring and network monitoring functions based on WEB interface. 🌈 It can monitor various network ...

1, Grammar onlylove@ubuntu:~$ wget -help GNU Wget 1.20.3, a non-interactive network retriever. Usage: wget [OPTION]... [URL]... Mandatory arguments to long options are mandatory for short options too. Startup: -V, --version display the version of Wget and exit -h, --help print this help -b, --b ...

catalogue 1, Supplement to the previous content 2, Several problems of servlet at present 3, Problems after separating two servlets 4, Forward 4.1 function 4.2 page Jump 4.3 operation and code 4.4 data transmission 4.5 forwarding features 5, Redirect 5.1 function 5.2 page Jump 5.3 code implementation 5.4 data transmission 5.5 cod ...

The function of the sort command is to sort by line Usage: sort [OPTION]... [FILE]... sort [OPTION]... --files0-from=F Options: Sort class options: -b. -- ignore leading blanks -- ignore spaces at the beginning of a line -d. -- dictionary order only handles spaces, English letters and numbers -f. -- ignore case -- lowercase lette ...