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CST8207 – Linux O/S I
Mounting a Filesystem Directory Structure Fstab Mount command CST8207 - Algonquin College 2 Chapter 12: page 467 - 496 CST8207 - Algonquin College 3 The mount utility connects filesystems to the Linux directory hierarchy. The mount point is a directory in the local filesystem where you can access mounted filesystem. This directory must exist before you can mount a filesystem. All filesystems visible on the system exist as a mounted filesystem someplace below the root (/) directory CST8207 - Algonquin College 4 can be mounted manually ◦ can be listed in /etc/fstab, but not necessary ◦ all mounting information supplied manually at command line by user or administrator can be mounted automatically on startup ◦ must be listed /etc/fstab, with all appropriate information and options required Every filesystem, drive, storage device is listed as a mounted filesystem associated to a directory someplace under the root (/) directory CST8207 - Algonquin College 5 CST8207 - Algonquin College 6 Benefits Scalable ◦ As new drives are added and new partitions are created, further filesystems can be mounted at various mount points as required. ◦ This means a Linux system does not need to worry about running out of disk space. Transparent ◦ No application would stop working if transferred to a different partition, because access to data is done via the mount point. ◦ Also transparent to user CST8207 - Algonquin College 7 All known filesystems volumes are typically listed in the /etc/fstab (static information about filesystem) file to help automate the mounting process If it is not listed in the /etc/fstab file, then all appropriate information about the filesystem needs to be listed manually at the command line. -
Openvms Record Management Services Reference Manual
OpenVMS Record Management Services Reference Manual Order Number: AA-PV6RD-TK April 2001 This reference manual contains general information intended for use in any OpenVMS programming language, as well as specific information on writing programs that use OpenVMS Record Management Services (OpenVMS RMS). Revision/Update Information: This manual supersedes the OpenVMS Record Management Services Reference Manual, OpenVMS Alpha Version 7.2 and OpenVMS VAX Version 7.2 Software Version: OpenVMS Alpha Version 7.3 OpenVMS VAX Version 7.3 Compaq Computer Corporation Houston, Texas © 2001 Compaq Computer Corporation Compaq, AlphaServer, VAX, VMS, the Compaq logo Registered in U.S. Patent and Trademark Office. Alpha, PATHWORKS, DECnet, DEC, and OpenVMS are trademarks of Compaq Information Technologies Group, L.P. in the United States and other countries. UNIX and X/Open are trademarks of The Open Group in the United States and other countries. All other product names mentioned herein may be the trademarks of their respective companies. Confidential computer software. Valid license from Compaq required for possession, use, or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor’s standard commercial license. Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is provided "as is" without warranty of any kind and is subject to change without notice. The warranties for Compaq products are set forth in the express limited warranty statements accompanying such products. Nothing herein should be construed as constituting an additional warranty. -
Ecaccess User Guide
ECaccess User Guide User Support Operations Department Version 3.3.0 May 2009 c Copyright 2009 European Centre for Medium-Range Weather Forecasts Shinfield Park, Reading, RG2 9AX, United Kingdom Literary and scientific copyrights belong to ECMWF and are reserved in all countries. The information within this publication is given in good faith and considered to be true, but ECMWF accepts no liability for error, omission and for loss or damage arising from its use. CONTENTS Contents 1 Introduction 3 2 Ecaccess concepts 4 2.1 ECaccess gateway ......................................... 4 2.2 Using an ECaccess gateway ................................... 5 2.3 Plugins ............................................... 5 3 Security authentication 7 3.1 ECaccess certificate ........................................ 7 3.2 ECcert command ......................................... 7 4 Unattended file transfers initiated from ECMWF 10 4.1 Target location ........................................... 10 4.2 ECtrans command ......................................... 11 4.2.1 Transfer to a Member State host via gateway ....................... 12 4.2.2 Transfer from a Member State host via gateway ...................... 12 5 Shell commands 14 5.1 Environment ............................................ 14 5.2 Access to Shell commands .................................... 15 5.3 General information ........................................ 15 5.4 File management ......................................... 15 5.5 Batch job management ..................................... -
Software Product Description and Quickspecs
VSI OpenVMS Alpha Version 8.4-2L2 Operating System DO-DVASPQ-01A Software Product Description and QuickSpecs PRODUCT NAME: VSI OpenVMS Alpha Version 8.4-2L2 DO-DVASPQ-01A This SPD and QuickSpecs describes the VSI OpenVMS Alpha Performance Release Operating System software, Version 8.4-2L2 (hereafter referred to as VSI OpenVMS Alpha V8.4-2L2). DESCRIPTION OpenVMS is a general purpose, multiuser operating system that runs in both production and development environments. VSI OpenVMS Alpha Version 8.4-2L2 is the latest release of the OpenVMS Alpha computing environment by VMS Software, Inc (VSI). VSI OpenVMS Alpha V8.4-2L2 is compiled to take advantage of architectural features such as byte and word memory reference instructions, and floating-point improvements, which are available only in HPE AlphaServer EV6 or later processors. This optimized release improves performance by taking advantage of faster hardware-based instructions that were previously emulated in software. NOTE: VSI OpenVMS Alpha V8.4-2L2 does not work on, and is not supported on, HPE AlphaServer pre-EV6 systems. OpenVMS Alpha supports HPE’s AlphaServer series computers. OpenVMS software supports industry standards, facilitating application portability and interoperability. OpenVMS provides symmetric multiprocessing (SMP) support for multiprocessing systems. The OpenVMS operating system can be tuned to perform well in a wide variety of environments. This includes combinations of compute-intensive, I/O-intensive, client/server, real-time, and other environments. Actual system performance depends on the type of computer, available physical memory, and the number and type of active disk and tape drives. The OpenVMS operating system has well-integrated networking, distributed computing, client/server, windowing, multi-processing, and authentication capabilities. -
UNIX Version 7 Volume 1
UNIXTM TIME-SHARING SYSTEM: UNIX PROGRAMMER'S MANUAL Seventh Edition, Volume 1 January, 1979 Bell Telephone Laboratories, Incorporated Murray Hill, New Jersey PREFACE Although this Seventh Edition no longer bears their byline, Ken Thompson and Dennis Ritchie remain the fathers and preceptors of the UNIX² time-sharing system. Many of the improvements here described bear their mark. Among many, many other people who have contributed to the further ¯owering of UNIX, we wish especially to acknowledge the contributions of A. V. Aho, S. R. Bourne, L. L. Cherry, G. L. Chesson, S. I. Feldman, C. B. Haley, R. C. Haight, S. C. Johnson, M. E. Lesk, T. L. Lyon, L. E. McMahon, R. Morris, R. Muha, D. A. Nowitz, L. Wehr, and P. J. Weinberger. We appreciate also the effective advice and criticism of T. A. Dolotta, A. G. Fraser, J. F. Maranzano, and J. R. Mashey; and we remember the important work of the late Joseph F. Ossanna. B. W. Kernighan M. D. McIlroy __________________ ²UNIX is a Trademark of Bell Laboratories. INTRODUCTION TO VOLUME 1 This volume gives descriptions of the publicly available features of the UNIX² system. It does not attempt to provide perspective or tutorial information upon the UNIX operating system, its facilities, or its implementation. Various documents on those topics are contained in Volume 2. In particular, for an overview see `The UNIX Time-Sharing System' by Ritchie and Thompson; for a tutorial see `UNIX for Beginners' by Kernighan. Within the area it surveys, this volume attempts to be timely, complete and concise. Where the latter two objectives con¯ict, the obvious is often left unsaid in favor of brevity. -
File System, Files, and *Tab /Etc/Fstab
File system, files, and *tab File system files directories volumes, file systems mounting points local versus networked file systems 1 /etc/fstab Specifies what is to be mounted where and how fs_spec: describes block special device for remote filesystem to be mounted fs_file: describes the mount point fs_vfstype: describes the type of file system fs_mntops: describes the mount options associated with the filesystem 2 /etc/fstab cont. fs_freq: used by the dump command fs_passno: used by fsck to determine the order in which checks are done at boot time. Root file systems should be specified as 1, others should be 2. Value 0 means that file system does not need to be checked 3 /etc/fstab 4 from blocks to mounting points metadata inodes directories superblocks 5 mounting file systems mounting e.g., mount -a unmounting manually or during shutdown umount 6 /etc/mtab see what is mounted 7 Network File System Access file system (FS) over a network looks like a local file system to user e.g. mount user FS rather than duplicating it (which would be a disaster) Developed by Sun Microsystems (mid 80s) history for NFS: NFS, NFSv2, NFSv3, NFSv4 RFC 3530 (from 2003) take a look to see what these RFCs are like!) 8 Network File System How does this actually work? server needs to export the system client needs to mount the system server: /etc/exports file client: /etc/fstab file 9 Network File System Security concerns UID GID What problems could arise? 10 Network File System example from our raid system (what is a RAID again?) Example of exports file from -
Argus Research (July 2020)
EQUITY RESEARCH REPORT July 13, 2020 MOLECULAR DATA INC. (NCM: MKD) Founded in 2013, China-based Molecular Data operates an e-commerce platform that KEY STATISTICS connects and serves participants of the Chinese chemicals industry across the value chain. Key Stock Statistics COMPANY HIGHLIGHTS Recent price (7/7/20) $2.40 * MKD: Connecting China’s Chemical Industry Value Chain 52 week high/low $11.80/$0.57 ADS Outstanding (M) 115 * In our view, Molecular Data has assembled a comprehensive network that can capture value across multiple previous pain points in China’s fragmented chemicals industry. Market cap (M) $276.0 Dividend Nil * After several years of organically building platform capabilities to include financial services, warehousing, logistics and software as a service (SaaS) offerings, Molecular Yield Nil Data should now be able to diversify its revenue stream beyond its core chemical direct e-commerce sales. This should lead to enhanced profit margins and, ultimately, sustainable Sector Overview profitability. Sector Materials * At the end of 2019, Molecular Data completed an initial public offering that yielded net Sector % of S&P 500 2.5% proceeds of approximately $55 million. As a result, we view the company as well posi- tioned to invest in its integrated e-commerce platform with new higher-margin services, and to pursue the acquisition of new capabilities and services globally. Financials ($M) * Although we expect near-term financial results to be impacted by the COVID-19 outbreak, Cash & Mkt Securities 8.3 which forced many customers and suppliers to halt operations throughout the first half of Debt 2.0 2020, we are encouraged by continued robust traffic on the Molbase platform. -
Getting Started Computing at the Al Lab by Christopher C. Stacy Abstract
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLI..IGENCE LABORATORY WORKING PAPER 235 7 September 1982 Getting Started Computing at the Al Lab by Christopher C. Stacy Abstract This document describes the computing facilities at the M.I.T. Artificial Intelligence Laboratory, and explains how to get started using them. It is intended as an orientation document for newcomers to the lab, and will be updated by the author from time to time. A.I. Laboratory Working Papers are produced for internal circulation. and may contain information that is, for example, too preliminary or too detailed for formal publication. It is not intended that they should be considered papers to which reference can be made in the literature. a MASACHUSETS INSTITUTE OF TECHNOLOGY 1982 Getting Started Table of Contents Page i Table of Contents 1. Introduction 1 1.1. Lisp Machines 2 1.2. Timesharing 3 1.3. Other Computers 3 1.3.1. Field Engineering 3 1.3.2. Vision and Robotics 3 1.3.3. Music 4 1,3.4. Altos 4 1.4. Output Peripherals 4 1.5. Other Machines 5 1.6. Terminals 5 2. Networks 7 2.1. The ARPAnet 7 2.2. The Chaosnet 7 2.3. Services 8 2.3.1. TELNET/SUPDUP 8 2.3.2. FTP 8 2.4. Mail 9 2.4.1. Processing Mail 9 2.4.2. Ettiquette 9 2.5. Mailing Lists 10 2.5.1. BBoards 11 2.6. Finger/Inquire 11 2.7. TIPs and TACs 12 2.7.1. ARPAnet TAC 12 2.7.2. Chaosnet TIP 13 3. -
Openvms: an Introduction
The Operating System Handbook or, Fake Your Way Through Minis and Mainframes by Bob DuCharme VMS Table of Contents Chapter 7 OpenVMS: An Introduction.............................................................................. 7.1 History..........................................................................................................................2 7.1.1 Today........................................................................................................................3 7.1.1.1 Popular VMS Software..........................................................................................4 7.1.2 VMS, DCL................................................................................................................4 Chapter 8 Getting Started with OpenVMS........................................................................ 8.1 Starting Up...................................................................................................................7 8.1.1 Finishing Your VMS Session...................................................................................7 8.1.1.1 Reconnecting..........................................................................................................7 8.1.2 Entering Commands..................................................................................................8 8.1.2.1 Retrieving Previous Commands............................................................................9 8.1.2.2 Aborting Screen Output.........................................................................................9 -
Rve P.Vp:Corelventura
® M-8400RVe Thermal Transfer Printer Operator and Technical Reference Manual PN 9001075A SATO America, Inc. 10350-A Nations Ford Rd. Charlotte, NC 28273 Main Phone: (704) 644-1650 Fax: (704) 644-1661 Technical Support Hotline: (704) 644-1660 E-Mail:[email protected] © Copyright 2000 SATO America, Inc. Warning: This equipment complies with the requirements in Part 15 of FCC rules for a Class A computing device. Operation of this equipment in a residential area may cause unacceptable interference to radio and TV reception requiring the operator to take whatever steps are necessary to correct the interference. All rights reserved. No part of this document may be reproduced or issued to third parties in any form whatsoever without the express permission of SATO America, Inc. The materials in this document is provided for general information and is subject to change without notice. SATO America, Inc. assumes no responibilities for any errors that may appear. SATOM8400RVe PREFACE M-8400RVe PRINTER OPERATOR’S MANUAL The M-8400RVe Printer Operator’s Manual contains basic information about the printer such as setup, installation, cleaning and maintenance. It also contains complete instructions on how to use the operator panel to configure the printer. The following is a brief description of each section in this manual. SECTION 1. PRINTER OVERVIEW This section contains a discussion of the printer specifications and optional features. SECTION 2. INSTALLATION This section contains instructions on how to unpack and set up the printer, load the labels and ribbon. SECTION 3. CONFIGURATION This section contains instructions on how to configure the printer using the DIP switches and the LCD/Menu/Control panel. -
Operating System Support for Parallel Processes
Operating System Support for Parallel Processes Barret Rhoden Electrical Engineering and Computer Sciences University of California at Berkeley Technical Report No. UCB/EECS-2014-223 http://www.eecs.berkeley.edu/Pubs/TechRpts/2014/EECS-2014-223.html December 18, 2014 Copyright © 2014, by the author(s). All rights reserved. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission. Operating System Support for Parallel Processes by Barret Joseph Rhoden A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Computer Science in the Graduate Division of the University of California, Berkeley Committee in charge: Professor Eric Brewer, Chair Professor Krste Asanovi´c Professor David Culler Professor John Chuang Fall 2014 Operating System Support for Parallel Processes Copyright 2014 by Barret Joseph Rhoden 1 Abstract Operating System Support for Parallel Processes by Barret Joseph Rhoden Doctor of Philosophy in Computer Science University of California, Berkeley Professor Eric Brewer, Chair High-performance, parallel programs want uninterrupted access to physical resources. This characterization is true not only for traditional scientific computing, but also for high- priority data center applications that run on parallel processors. These applications require high, predictable performance and low latency, and they are important enough to warrant engineering effort at all levels of the software stack. -
Manually-Allocated Contributions in Research Unix Editions Identifier Name Contributions Aho Alfred V
Table 1: Manually-Allocated Contributions in Research Unix Editions Identifier Name Contributions aho Alfred V. Aho awk, dbm, egrep, fgrep, libdbm bsb Brenda S. Baker struct bwk Brian W. Kernighan adv, awk, beg, beginners, ctut, ed, edtut, eqn, eqnchar, learn, m4, neqn, rat, ratfor, trofftut, uprog csr C. S. Roberts tss dan D. A. Nowitz uucp dmr Dennis Ritchie a.out, ar, as, assembler, atan, bcd, c, cacm, cat, cc, cdb, check, chmod, chown, cmp, core, cp, ctime, ctour, date, db, dev, df, dir, dmr, dp, dsw, du, ed, exit, exp, f77, fc, fort, fptrap, getc, getty, glob, goto, hypot, if, init, iolib, iosys, istat, ld, libc, ln, login, ls, m4, man2, man3, man4, mesg, mkdir, mount, mv, nm, od, pr, ptx, putc, regen, rew, rf, rk, rm, rmdir, rp, secur, security, setup, sh, sin, sort, sqrt, strip, stty, su, switch, tp, tty, type, umount, unix, uprog, utmp, who, write, wtmp doug Doug McIlroy diff, echo, graph, join, look, m6, sort, spell, spline, tmg jfm J. F. Maranzano adb jfo Joe Ossanna azel, ed, getty, nroff, ov, roff, s7, stty, troff, wc ken Ken Thompson ar, atan, atof, bas, bj, bproc, cacm, cal, cat, check, chess, chmod, chown, core, cp, dc, dd, df, dir, dli, dp, dsw, dtf, ed, exp, f77, fc, fed, form, fort, fptrap, getty, grep, hypot, implement, init, itoa, ken, libplot, ln, log, login, ls, mail, man, man2, man4, mesg, mkdir, moo, mount, mv, nlist, nm, od, password, plot, pr, qsort, rew, rf, rk, rm, rmdir, roff, rp, sa, sh, sin, sort, sqrt, stty, su, sum, switch, sync, sys, tabs, tp, ttt, tty, umount, uniq, unix, utmp, who, write, wtmp lem Lee E.