Table of Contents
Hope this guide helps you when you see the Unix system file etc.
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g.Target. The / etc hierarchy contains configuration files. A “configuration file” is a local document used to control the operation of a program; it must be stationary and cannot be an exe binary.
g.
/ Etc / System File
ETC is usually a folder containing all the configuration files for your trusted system. So why name, etc.? “Etc” is also an English word meaning etc., That is, in layman terms, it is definitely “and so on.”
File / etc / system preprovides a static mechanismto switch the values of kernel variables. The values specified in this fileare defined and applied at startup. No changes will be made to the file.applies to the operating system until the system is restarted.
Prior to version 8 Solaris entries / etc / system In this program, the values of system factors were applied in two stages:
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The most advanced stage receives various boot parameters (eg maxusers ) to initialize important process parameters.
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The second step calculates that this basic configuration is achieved usingvariables, bootstrap, and any values entered in the / etc / system file are accepted. For example, those of boot variables reappliedThe values get rid of the values calculated or recalculated during the initialization phase.
The second period sometimes confused users and administrators.by setting the variables to values that seem illegal, or perhaps by assigningValues in variables (e.g. max_nprocs ) because they havethe value that was overwritten during the initial configuration.
In Solaris 8, values are passed before people are defined.- complex configuration parameters.
Example – Defining A Parameter In / Etc / System
The / etc / system entry used specifies the numberread-ahead shoes for folder readers mounted with NFS version2 computer system.
Recovering An Erroneous Value
Make any copy of / etc / system before configuringHere’s how you can easily get some truth value:
If a value is entered via / etc / system , the system callsto stop booting, you can restore it with the following command:
This command forces the system to check the names of various files.used during the boot process. Press this carriage return to accept all defaults.Values up to the name of the entire requested / etc / system file.If the name is in the system file [/ etc / system]: Prompt, enter a positive name / etc / system File or / dev / null :
If ccis / dev / null , this process path will cause the system toTrying to do this helps when reading / dev / null to link with the configuration and because it is empty uses this particular systemdefault values. After starting the exact system, the / etc / system log can be fixed.
For more information on recovery, see the System Administrator Guide: Basic Administration .
# cp / etc / system /etc/system.good
File system-relative name [/ etc / system]: /etc/system.good
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The / etc / system file contains a static mechanism for the normal setting of kernel variable values. The values selected in this file are read and applied at startup. In practice, all changes to a file are unambiguously applied only after a system restart.
A file is the smallest unit that stores information. The Unix filesystem has several important factors. All data for Unix is prepared in files. All files are placed before directories. These directories are organized in a tree structure known as an arbitrary file system.
