Shell

1. Remove the file suffix ". Sh" from the current directory" For I in 'ls .' Do MV-V $ I 'echo $ {I %. Sh }' Done 2. When the column file directory is in the shell, the file name variable with spaces is not treated as two parameters. Ls-

This book is comprehensive and detailed. It is suitable for beginners to study carefully. Chapter 2 welcome to the Linux World 1. POSIX standard   2. Linux has kernel programming interfaces   3. Linux supports Secure hierarchical file

An operating system can be divided into two parts: kernel and shell ).A shell program encapsulates the kernel that communicates directly with the hardware: hardware kernel shell Application In some operating systems, the kernel and shell are

1. Delete 0-byte filesFind-type F-size 0-exec Rm-RF {}\; 2. View ProcessesSort by memory from large to smallPS-e-o "% C: % P: % Z: % A" | sort-K5-NR 3. sort by CPU utilization from large to smallPS-e-o "% C: % P: % Z: % A" | sort-NR 4. Print the URL

Export makes the environment variables defined in the parent shell still valid in the Child shell.   Eg: [Oracle @ ora10g ~] $ Echo $ AA [Oracle @ ora10g ~] $ Echo $ BB [Oracle @ ora10g ~] $ AA = aaa [Oracle @ ora10g ~] $ BB = BBB [Oracle @

Do not add the parameter-V. Otherwise, you will test it on Linux. VI autoftp. Sh The content is as follows: FTP-n-v-I Linux Command (used to set file permissions) umask 022 The preceding command indicates that the umask value in Linux is 022.

-B. returns true if the file exists and is a block file.-C: returns true if the file exists and is a character file.-D. If pathname exists and is a directory, true is returned.-E: returns true if the file or directory specified by pathname exists.-F

Compression command:*. Z compress program zookeeper case;*. Bz2 Bzip2 program zookeeper case;*. GZ gzip program upload history case;* The resources packaged by the. Tar program have not been deleted;* .Tar.gz tar program packaging example, which has

Securecrt is easy to set when you remember the password, so this person is used to securecrt, but the file upload function has never been figured out. Pshell has been used for a long time, because pshell has a powerful secureftp function. After

Document directory Function Definition Return Value To put it simply, the popen () functionFunction Definition #include FILE * popen(const char *command , const char *type );int pclose(FILE *stream);Function Description The popen () function

1, note:Ulimit is used for resources occupied by Shell startup processes.2. Category:Shell built-in commands3. Syntax format:Ulimit [-acdfhlmnpsstvw] [size]4. Parameter introduction:-H: Set hardware resource limits.-S: Set software resource

One of the most depressing problems in code debugging is that once Erlang shell closes the command history that has just been entered, it will be lost. It is convenient to maintain the history of an input command; the following project can help us

  I have been busy recently, and occasionally spend some time reading books to supplement my energy. Recently I am studying programming languages-I am very touched by the road to practice. What I 've learned by mistake is a more system, the complete

During the bug quality analysis, the word segmentation should be sorted and de-duplicated, so we thought of sort and uniq. It is very convenient to call shell through python. #-*-Coding: UTF-8 -*-Import OSImport sysDef cws_statistics (flag, afile,

Reference: http://feidaodalian.iteye.com/blog/697158It is said that this is an unsolved bug of the SSH Secure Shell client for many years. Both the client and the server must be 'utf-8' encoded.Find information on the Internet and find a simple

The requirements are as follows: There is an AAAA file with the following content: Code highlighting produced by Actipro CodeHighlighter

One command alias settings: alias, unalias Command alias is a very interesting thing, especially when your usual command is very long! In addition, you can add predefined attributes to some common commands to prevent accidental file killing! For

Data Stream redirection refers to the data that should appear on the screen after a command is executed and transmitted to another place, such as a file or device (such as a printer !)! This is important in Linux text mode! This is especially useful

It is a good thing. In many places of life, people like to use abbreviations, which saves time and effort. Bash also has its own abbreviation, alias,Alias always has a lot to do. Why not? As mentioned above, we often talk about a large number of

Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/ There is a text:2006ChinaSichuan042834 1 2 3042835 4 5 6042836 7 8 92007ChinaChongqing042837 1 2 3042838 4 5 6042839 7 8 9............To merge042834 1 2 3 2006 Sichuan, China042835 4 5 6 2006