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  1, centos6 start management   1.1 significance of operation level   1.2 view operation level [root@localhost log]# runlevel 3 5     //It means 5 at present, 3 before. If it's N, it means direct power on to enter 5   1.3. Set the default startup operation level [root@localhost log]# vim /etc/inittab     2, S ...

su command User switching. su # Switch to root su username # Switch to username user # When su is followed by - the various environments of the current user are initialized su - username # Specifying users to execute certain commands su - -c "touch /tmp/testfile02.txt" test06 # As test06 user at / tmp ...

1, Find file from index library: locate Index library: the operating system will periodically traverse the root file system, and then generate the index library Update index library manually: updatedb Syntax: locate [OPTION]... PATTERN Match basename only: - b Count the number of qualified documents: - c Use basic regular expression: - r ...

Mask-Rcnn Data Annotation Detailed Tutorial (labelme version) abstract 1. Data Set Making 1. Installation and use of labelme 2. Tagging Pictures and Batch Conversion abstract Hello! Starting with data annotation, this paper will elaborate o ...

Since the author does not have a deep mathematical background or financial knowledge, he will not quote various advanced investment models or mathematical models in this paper. The reference books are mainly "Turtle Trading Rules" and "Make a living from trading". trading system Before trading, we should first have a tradin ...

Catalog Linux Basic Learning 2 File directory structure File Naming Specification File System Structure Composition of linux applications Absolute and relative paths Directory name and base name Switch directories Switch to Home Directory Switch to the last dire ...

How PyInstaller decompiles (cracks source code) and prevents decompiling Python files after they are packaged as exe Share some tips and experiences here.Keep the author's information and article links for sharing, reprinting or citing your hard work. Author's environment: win7+python3.5(anaconda3) Theoretically, systems with win7 and ...

One of PyTorch's in-depth learning framework libraries is an open source in-depth learning platform from Facebook that provides a seamless link between research prototypes and production deployments. The purpose of this article is to introduce the basic part of PyTorch, to help beginners to realize the ...

Because iCloud currently has insufficient space, 95% of which are photos. DayOne was previously started with no space restrictions, and the subscription fee is not less than a year. DayOne is also well-known as a diary App. The most powerful features are the geographic and photo views, especially those used to remember things last year and tod ...

First, what is Grub? The full name of Grub is Grand Unified Bootloader, and grub can boot multiple operating systems. When the boot button is pressed, the chassis will emit a drip, which indicates that BIOS has completed the boot self-check and the hardware is normal. Next, BIOS will read 512 bytes of data from 0 cylinder, 0 track an ...