Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Compression and Archival Tools for Linux Administrators

  File Compressing and Decompressing Utilities We have several tools to compress and decompress in unix and linux environment. Below is the list of some commonly used tools. gzip-compression The gzip tool is typically categorized as the “classic” method of compressing data on a Linux machine....

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Solaris Troubleshooting NFS : error “setuid execution not allowed”

To prevent network break-ins, the “-nosuid” option is used in  “/etc/vfstab” and the “/etc/auto*” configuration files  used for NFS mounting filesystems. In “/var/adm/messages”, (the system log files),  the following type of message appears frequently: “Date machinename enterprise: save,uid 0:setuid execution not allowed”

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Linux Boot loader – GRUB

The function of a boot loader is to locate the Linux kernel, and load it into memory before starting it. Boot loading usually occurs in at least two    stages – the BIOS loads the primary boot loader, which loads a secondary boot loader in order...

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Cisco MDS zoning

      Zones and zone sets are the basic form of data path security within a Fibre Channel environment. A zone set is a collection of zones which in turn have individual members in them. Only those members within the same zone can communicate with...

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