linux commands for interview

1, the Linux command can be divided into internal commands and external commands:The built-in commands are memory-resident when the system is started, so the execution efficiency is high.The external command is the software function of the system, and the user is required to read the memory from the hard disk.2. Type-display Information about command type#查看当前系统的

The difference between 1.malloc and new 2. Explain the bit field 3.C Language address alignment is what's going on 4. Write a function similar to printf, you can accept any number of parameters 5. When using the MEMCP function, what should be noted 6. Tell me about the sorting algorithm you know. 7. There are two single linked lists, and in what ways can you quickly know if they have the same part 8. How to pass parameters to makefile when executing make command 9. Explain the zombie process 10.

In Linux, the device is accessed as a file. Read the file system to be loaded from/etc/fstab during Linux kernel boot. Each file in a Linux File System is identified by an I node. All disk blocks are composed of four parts: boot block, dedicated block, I node table block, and data storage block. Links are divided into hard links and symbolic links. Super blo

This article mainly introduces the method of installing 7z command under Linux, and introduces the use of 7z command. 7z compression format has many advantages, with a very high compression ratio, if you do not understand, see the article: 7z format, LZMA compression algorithm and 7-zip detailed introduction.The Linux distribution used by Reille is Ubuntu and has been validated on Redhat for normal use.1.

if the compressed file is a very large case.Tar command-Function Description: File package and unpacking.-Command format: tar [parameters] -Common parameters:-F Name: Use name to specify the archive file name or device name.-V: Lists processing details.-C: Used to create a new archive file.-X: Restore the backup file from the archive file.-T: Used to list the file names in an archive file.-Z: Compress files or unzip with GNU Gzip.-Z: Compress files or unzip with compress.-j: Compress files or u

We can modify the/etc/bash. bashrc file (other users are in their respective directories) so that we can automatically load our custom commands when logging on to shell. In the process of using linux, it is inevitable that a long string of commands will be bored if they are frequently typed ...... When calling some executable files, you have to write down a long

simply enters the command man and the name of the command shell will list a complete description.Standard usage:Name of the man commandTo query the description page of the LS command, enter the command: Man lsTo flip through the manual page, you can use the page UP and PAGE DOWN keys, or use the spacebar to turn back one page and use B to flip forward. To exit the manual page, enter the command Q. To search for keywords in the manuals page, enter a command/and keyword or phrase to search for, a

The IP address configuration in the Linux command line is not as convenient as in the graphic interface. we need to manually configure the IP address. The following describes several configuration methods: nbsp; takes effect immediately (expired after restart ): ifconfigeth0192.168.1.102netmask00000000255.0 nbsp; // add the IP address routeadddefau The IP address configuration in the Linux command line is

Summary of Common commands for GDB debugging in Linux, and Common commands for gdb Prepared by: longshike Email: longshike2010@163.com 2016-01-05 Gdb is the default debugging tool in Linux. When compiling a program file, such as debug. c. To use gdb for debugging, you must add cc-g or gcc-g before the terminal command

Use of cp, rm, and mv commands and cp commands in Linux Command lines The following content comes from laruence's private kitchenCopy, delete, and move Linux Command lines: cp, rm, and mvCp (copy) replicationThe cp command is used for many purposes. In addition to simple copying, you can also create a link file to comp

shorthand for the ls-l command (Ls-l is ll alias relationship)(6) Cut or rename command: MV (move)MV [source file or directory] [target directory] This is not used with-RThe role of a common directory: (the role of a common directory)/root directory to explain and familiarize yourself with the role of first-level catalogsBoth the bin and the Sbin,usr directory in the root directory are the bin and sbin four directories that are used to hold system commands