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arm linux printer driver compilation method and process record (2017.03.15): Change Add Overview: Add foo2zjs tool (for sending data to printer for printing); Add gohstscript tool (for converting document format to pbm format recognized by printer); Encript is added to convert txt, c, cpp and other documents into PostScript format recognize ...

In some system applications, we need to separate application servers, database servers, file servers, file paths and other information stored in the database server, but file content is stored in the file server, using FTP file upload and download, so as to achieve more efficient IO output, but also to share the pressure of the server. This art ...

There are several ways to load Unity for resources in the game, among which Asset Bundle is very important for dynamic and online updates. This blogger explains the steps of packaging, publishing, transmitting, parsing and loading resources through AssetBundle. 1. pack There are two ways to package the resource files we want to package out: ...

1. Document upload in traditional environment In traditional projects, you can add a folder to the web project to store the uploaded images. For example, create an image folder under the project's root directory, WebRoot. Storing pictures in this folder can be directly used in engineering reference. Advantages: Easy to cite, easy to manage Disa ...

This article briefly sorted out the steps of how to install and configure SendMail to send mail on Linux server. This article is not configuring mail server. The specific test environment is CentOS Linux release 7.2.1511 (Core). If there are differences between special platforms, please take the actual situation as the criterion. Linux System ...

VSFTP startup failure - Failed to start Vsftpd ftp daemon The error is as follows [root@host-liu vsftpd]# systemctl status vsftpd.service vsftpd.service - Vsftpd ftp daemon Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; disabled) Active: failed (Result: exit-code) since Tue 2018-07-03 10:09:23 CST; 2min 3s ...

For beginners, these meanings may only know a few of them. Let's take a look at them. 1. The vertical line'|'is used as a pipe character in linux, and the output of the command before'|' is used as the input after'|'. For instance [18066609@root~]$ cat /etc/passwd root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nolog ...

Catalog 1 awk command 1 awk command Copy exercise files [root@worker1 dir9]# cp /etc/passwd ./testpasswd Print the first field [root@worker1 dir9]# head -n2 testpasswd | awk -F ':' '{print $1}' ROOT bin Print entire line [root@worker1 dir9]# head -n2 testpasswd | awk -F ':' '{print $0}' ROOT:x:0:0:roooot:/root:/bin/ ...

Authority management: ls -l rwxrwxrwx: The left three: defining user(owner) permissions The middle three: define the rights of group; The right three: the right to define other Process security context: Application model of process access rights to files: Whether the ownership of ...

The shell special symbol cut command:1. * Any arbitrary character (this is a wildcard character)2. Any character3. # Annotation Character4. \ Definition character5,| Pipeline CharacterSeveral pipeline-related orders:1. cut partition, - d separator - f specifies the segment number - c specifies the number of characters.Example:[root@aminglinux-0 ...