1. Command format:tar[necessary parameters [selection parameters] [file]2. Command function:Used to compress and decompress files. The tar itself does not have compression capabilities. It is implemented by invoking the compression function3.
You can use the uptime, top, and W commands to view.Take the uptime command as an example:[Email protected]:~17:31:26 up 7:27, 2 users, load average:0.09, 0.06, 0.10The three values in load average represent the average number of processes in the
Summary: Starting with "Why Learn and Master Linux", James explains why and why; plan his goals; Why learn and Master Linux? --When reading, if you see someone else using the command line to operate the computer to achieve their desired function,
There are two ways of doing this:First: Pstack process ID Second, use GDB and then attach the process ID, then use the command thread apply all BT Third: Strace-f-P pid the method and Pstack similarPart IV: Gcore PID, output core file, gdb cmd
The properties of a Linux file or directory include: The file or directory's node, kind, permission mode, number of links, the user and user group to which it belongs, the time recently accessed or modified, and so on. The details are as
This article installs with Ubuntu system.1. Install SVN serverEnter Y return to confirm the installation.After installation, you can use the following command to see if the installation is complete, if the actual publication of this number and
1 , command-line mode ) function keysa ). Insert modeI : Start typing text at the cursor's current positionI : Enter the file at the beginning of the current lineA : Enter text from the next position where the cursor is currently locatedA : Enter
Top command parameters-h:help means to show help-v:version shows the version meaning, as with the function of-H-u:user Displays the process for the specified user, for example: Top-u root-P:PID Displays the specified process, for example: Top-p
#uname-A # view kernel/OS/CPU Information #Head-N1/etc/issue # View OS version #Cat/proc/Cpuinfo # Viewing CPU information #hostname# View Computer name # LSPCI-TV # List all PCI devices # LSUSB-TV # list all USB devices #Lsmod# list loaded kernel
Unlike the Windows,linux system, there are two shear plates: one is called the selection buffer (X11 selection) and the other is the shear plate (clipboard). Select buffer (buffer content is available elsewhere): You can use the middle mouse button
The first step: Submit your own directory files (first to your own directory to download the latest files--merge--and submit to the TEMP directory temp--> in the total directory submitted to master--Other association master FARThe directory of the
VI EditorVim Full-screen plain text editorEnhanced version of the Vim VI Editor (upgraded version)VI Use1VI file nameVI modeCommand modeInput modeLast-line modeCommand----> Input a append i insert o open a/a i/i o/oEnter----> Command ESCCommand---->
Linux Introduction:Linus Torvalds, a Finnish university student, has designed the operating system for its own Intel 386 pc from 1990-1991, using Tanenbaum's self-designed UNIX operating system Minix as a development platform.Operating system:An OS
Original: LCTT https://linux.cn/article-5633-1.html Translator: GolinuxThis address: https://linux.cn/article-5633-1.html2015-6-15 15:44 Favorites: 9Question: How can I monitor a single thread after my program has created and executed multiple
In linux, linuxsigsegv is used to handle sigsegv errors.
Generally, access to an invalid address will cause the application to receive the sigsegv signal sent by the system. By default, the function will exit from processing the signal.
However,
APUE environment configuration and apue Environment
1. Go to http://www.apuebook.com/select the desired download source code. I am from 3
2. Copy apue. h to the/usr/include directory.
3. Copy error. c to the source file and bring it during
Use of CentOS7 firewall, centos7firewall
# View regions
Firewall-cmd -- get-zones
# View default regions
Firewall-cmd -- get-default-zone
# Add permanent services to a region
Firewall-cmd -- add-service = http -- zone = public --
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