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About this book. The latest version of this document may be downloaded from http://www.freesoftware.fsf.org/ext2-doc/ This book is intended as an introduction and guide to the Second Extended File System, also known as Ext2.


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The ext2 or second extended filesystem is a file system for the Linux kernel.It was initially designed by Rémy Card as a replacement for the extended file system (ext). Having been designed according to the same principles as the Berkeley Fast File System from BSD, it was the first commercial-grade filesystem for Linux.


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Without -e or -f options, sed uses the first non-option parameter as the script, and the following non-option parameters as input files.If -e or -f options are used to specify a script, all non-option parameters are taken as input files.


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1.1 What is Bash? Bash is the shell, or command language interpreter, for the GNU operating system. The name is an acronym for the ‘Bourne-Again SHell’, a pun on Stephen Bourne, the author of the direct ancestor of the current Unix shell sh, which appeared in the Seventh Edition Bell Labs Research version of Unix.


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Operating system variations. Unix-like and otherwise POSIX-compliant systems, including Linux-based systems and all macOS versions, have a simple system for managing individual file permissions, which in this article are called "traditional Unix permissions".


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6. Extended filesystems (Ext, Ext2, Ext3) Extended filesystem (ext fs), second extended filesystem (ext2fs) and third extended filesystem (ext3fs) were designed and implemented on Linux by Rmy Card, Laboratoire MASI--Institut Blaise Pascal, < card@masi.ibp.fr>, Theodore Ts'o, Massachussets Institute of Technology, < tytso@mit.edu> and Stephen ...


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Warning: When used for security purposes, permissions and attributes only defend against attacks launched from the booted system. To protect the stored data from attackers with physical access to the machine, one must also implement disk encryption. Read permission (first character) -The file cannot ...


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1.3.2 Platforms. Although most of the program is portable between Unix-like systems, there are parts that have to be tailored to each specific vendor’s system.


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The GnuCOBOL FAQ, How To, and COBOL cookbook. 1.1 What is GnuCOBOL? ¶ GnuCOBOL is a free COBOL compiler. GnuCOBOL is a GNU software project. GnuCOBOL implements a substantial part of the COBOL 85 and COBOL 2002 standards, as well as many extensions of the existent COBOL compilers.


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Introduction ¶. This document describes the language extensions provided by Clang. In addition to the language extensions listed here, Clang aims to support a broad range of GCC extensions.