Unix Error

To complete this chapter, you can do the following: Check http://www.aliyun.com/zixun/aggregation/18415.html > Network connection errors using the following command: Lanscan lanadmin Linkloop arp ping netstat-i netstat-a netstat-r hostname nslookup 1. Network error-checking tool in Unix ...

By completing this chapter, you can do the following things: Change the output of the Unix command to the file. Prints the error message generated by the UNIX command to the file. Change the input of UNIX commands. Define a filter using some basic filters such as Sort,grep and WC. 9.1 Input and output REDIRECT Introduction shell provides the ability to redirect the input and output of a command. The output of most commands is output to the terminal screen, such as date,ls,who and so on, many commands are entered from the keyboard, commands include mail ...

At the same time, through the introduction of the following two examples, to consolidate the above problem analysis of the introduction: a multithreaded application of the performance problem analysis of a crash problem analysis of UNIX program http://www.aliyun.com/zixun/aggregation/17253. HTML > FAQ classification UNIX Run programs, often encounter the following types of problems: Crash memory leak handle leak process does not respond to the performance of the expected logic error UNI ...

By completing this chapter, you will be able to do the following: Describes the effect of a return value in a conditional branch statement. Use the test command to parse the return value of a command. Use the IF and case structures in a shell program. &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp;1. Return value shell variable"? "To save the return value of the last executed command: 0: ...

Monit is a management and monitoring tool for UNIX systems. It is able to automate maintenance and repair of error programs that have been executed, especially for software errors that can be used to monitor changes in processes, programs, files, directories, and devices for a variety of reasons. It is monitored through a free-form simple configuration control file that can be logged to the system record or its own log file, and notifies the user to set the error condition via 17813.html "> Customizable alert messages." It can perform various http://www.ali ...

This is the technology that protects data integrity. RAID means redundant low-cost http://www.aliyun.com/zixun/aggregation/20901.html "> Disk array. It is a rather new concept, presented by the University of California, Berkeley, in 1987. The basic idea behind raid is that by using multiple small disks (relatively few large disks) and possibly some checksum data, you should be able to rebuild the data in one of these disk failures instead of missing a few ...

Monit is a UNIX system management and monitoring tool. It is able to automate maintenance and repair of error programs that have been executed, especially for software errors that can be used to monitor changes in processes, programs, files, directories, and devices for a variety of reasons. It is monitored through a free-form simple configuration control file that can be logged to the system record or its own log file, and notifies the user to set the error condition via 17813.html "> Customizable alert messages." It can perform various http://www.aliyun ...

S6-portable-utils 0.11 is a small Unix utility for cutting and grep execution. The tool is designed for embedded systems and other restricted environments, but work is everywhere. Other gadgets are usually system-specific, for example, the BusyBox project applies only to Linux. S6-portable-utils http://www.aliyun.com/zixun/aggregation/37104.html ">0 ...

Coccigrep 1.0RC2 version Adds an undefined structure search to improve matching functionality. Fixed error handling user-defined match. Coccigrep is a C-language Unix command-line tool. It can be used to locate a code file for a given structure, or to use one of its properties to set up and test. Software information: http://home.regit.org/software/coccigrep/download address: http://home.regit.org/wp-...

Zsh is a UNIX command interpreter (shell). It is similar to the standard shells of the Korn shell (Ksh), but features are more powerful than ksh, especially command-line editors, custom behavior options, and file matching. Zsh 4.3.14 This version is an error correction version of the 4.3 branch that completes the usual improvements to other shell functions. Software information: http://www.zsh.org/download address: Ftp://ftp.zsh.org/pub/zsh-dev ...