Professor Hilfinger's Simple UNIX Commands
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Configuring UNIX-Specific Settings: Creating Symbolic Links : Snap
Configuring UNIX-specific settings: Creating symbolic links Snap Creator Framework NetApp September 23, 2021 This PDF was generated from https://docs.netapp.com/us-en/snap-creator- framework/installation/task_creating_symbolic_links_for_domino_plug_in_on_linux_and_solaris_hosts.ht ml on September 23, 2021. Always check docs.netapp.com for the latest. Table of Contents Configuring UNIX-specific settings: Creating symbolic links . 1 Creating symbolic links for the Domino plug-in on Linux and Solaris hosts. 1 Creating symbolic links for the Domino plug-in on AIX hosts. 2 Configuring UNIX-specific settings: Creating symbolic links If you are going to install the Snap Creator Agent on a UNIX operating system (AIX, Linux, and Solaris), for the IBM Domino plug-in to work properly, three symbolic links (symlinks) must be created to link to Domino’s shared object files. Installation procedures vary slightly depending on the operating system. Refer to the appropriate procedure for your operating system. Domino does not support the HP-UX operating system. Creating symbolic links for the Domino plug-in on Linux and Solaris hosts You need to perform this procedure if you want to create symbolic links for the Domino plug-in on Linux and Solaris hosts. You should not copy and paste commands directly from this document; errors (such as incorrectly transferred characters caused by line breaks and hard returns) might result. Copy and paste the commands into a text editor, verify the commands, and then enter them in the CLI console. The paths provided in the following steps refer to the 32-bit systems; 64-bit systems must create simlinks to /usr/lib64 instead of /usr/lib. -
Mac Keyboard Shortcuts Cut, Copy, Paste, and Other Common Shortcuts
Mac keyboard shortcuts By pressing a combination of keys, you can do things that normally need a mouse, trackpad, or other input device. To use a keyboard shortcut, hold down one or more modifier keys while pressing the last key of the shortcut. For example, to use the shortcut Command-C (copy), hold down Command, press C, then release both keys. Mac menus and keyboards often use symbols for certain keys, including the modifier keys: Command ⌘ Option ⌥ Caps Lock ⇪ Shift ⇧ Control ⌃ Fn If you're using a keyboard made for Windows PCs, use the Alt key instead of Option, and the Windows logo key instead of Command. Some Mac keyboards and shortcuts use special keys in the top row, which include icons for volume, display brightness, and other functions. Press the icon key to perform that function, or combine it with the Fn key to use it as an F1, F2, F3, or other standard function key. To learn more shortcuts, check the menus of the app you're using. Every app can have its own shortcuts, and shortcuts that work in one app may not work in another. Cut, copy, paste, and other common shortcuts Shortcut Description Command-X Cut: Remove the selected item and copy it to the Clipboard. Command-C Copy the selected item to the Clipboard. This also works for files in the Finder. Command-V Paste the contents of the Clipboard into the current document or app. This also works for files in the Finder. Command-Z Undo the previous command. You can then press Command-Shift-Z to Redo, reversing the undo command. -
Unix/Linux Command Reference
Unix/Linux Command Reference .com File Commands System Info ls – directory listing date – show the current date and time ls -al – formatted listing with hidden files cal – show this month's calendar cd dir - change directory to dir uptime – show current uptime cd – change to home w – display who is online pwd – show current directory whoami – who you are logged in as mkdir dir – create a directory dir finger user – display information about user rm file – delete file uname -a – show kernel information rm -r dir – delete directory dir cat /proc/cpuinfo – cpu information rm -f file – force remove file cat /proc/meminfo – memory information rm -rf dir – force remove directory dir * man command – show the manual for command cp file1 file2 – copy file1 to file2 df – show disk usage cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if it du – show directory space usage doesn't exist free – show memory and swap usage mv file1 file2 – rename or move file1 to file2 whereis app – show possible locations of app if file2 is an existing directory, moves file1 into which app – show which app will be run by default directory file2 ln -s file link – create symbolic link link to file Compression touch file – create or update file tar cf file.tar files – create a tar named cat > file – places standard input into file file.tar containing files more file – output the contents of file tar xf file.tar – extract the files from file.tar head file – output the first 10 lines of file tar czf file.tar.gz files – create a tar with tail file – output the last 10 lines -
Powershell Integration with Vmware View 5.0
PowerShell Integration with VMware® View™ 5.0 TECHNICAL WHITE PAPER PowerShell Integration with VMware View 5.0 Table of Contents Introduction . 3 VMware View. 3 Windows PowerShell . 3 Architecture . 4 Cmdlet dll. 4 Communication with Broker . 4 VMware View PowerCLI Integration . 5 VMware View PowerCLI Prerequisites . 5 Using VMware View PowerCLI . 5 VMware View PowerCLI cmdlets . 6 vSphere PowerCLI Integration . 7 Examples of VMware View PowerCLI and VMware vSphere PowerCLI Integration . 7 Passing VMs from Get-VM to VMware View PowerCLI cmdlets . 7 Registering a vCenter Server . .. 7 Using Other VMware vSphere Objects . 7 Advanced Usage . 7 Integrating VMware View PowerCLI into Your Own Scripts . 8 Scheduling PowerShell Scripts . 8 Workflow with VMware View PowerCLI and VMware vSphere PowerCLI . 9 Sample Scripts . 10 Add or Remove Datastores in Automatic Pools . 10 Add or Remove Virtual Machines . 11 Inventory Path Manipulation . 15 Poll Pool Usage . 16 Basic Troubleshooting . 18 About the Authors . 18 TECHNICAL WHITE PAPER / 2 PowerShell Integration with VMware View 5.0 Introduction VMware View VMware® View™ is a best-in-class enterprise desktop virtualization platform. VMware View separates the personal desktop environment from the physical system by moving desktops to a datacenter, where users can access them using a client-server computing model. VMware View delivers a rich set of features required for any enterprise deployment by providing a robust platform for hosting virtual desktops from VMware vSphere™. Windows PowerShell Windows PowerShell is Microsoft’s command line shell and scripting language. PowerShell is built on the Microsoft .NET Framework and helps in system administration. By providing full access to COM (Component Object Model) and WMI (Windows Management Instrumentation), PowerShell enables administrators to perform administrative tasks on both local and remote Windows systems. -
Dig, a DNS Query Tool for Windows and Replacement for Nslookup 2008-04-15 15:29
dig, a DNS query tool for Windows and replacement for nslookup 2008-04-15 15:29 Disclaimer dig (dig for Windows ) (dig is a powerful tool to investigate [digging into] the DNS system) Source of the binary is from ftp.isc.org Manual Page of dig, in the cryptic Unix style, for reference only. (1) Download: Windows 2000 or Windows XP or Windows Vista ( dig version 9.3.2) Create a folder c:\dig Download this dig-files.zip and save it to c:\dig Use winzip or equivalent to extract the files in dig-files.zip to c:\dig Note: If msvcr70.dll already exists in %systemroot%\system32\ , then you can delete c:\dig\msvcr70.dll Note: Included in dig-files.zip is a command line whois, version 4.7.11: The canonical site of the whois source code is http://ftp.debian.org/debian/pool/main/w/whois/ The whois.exe file inside dig-files.zip is compiled using cygwin c++ compiler. (2) Do a file integrity check (why ? Because some virus checkers destroy dll files) Click Start.. Run ... type CMD (a black screen pops up) cd c:\dig sha1 * You should see some SHA1 hashes (in here, SHA1 hash is used as an integrity check, similar to checksums). Compare your hashes with the following table. SHA1 v1.0 [GPLed] by Stephan T. Lavavej, http://stl.caltech.edu 6CA70A2B 11026203 EABD7D65 4ADEFE3D 6C933EDA cygwin1.dll 57487BAE AA0EB284 8557B7CA 54ED9183 EAFC73FA dig.exe 97DBD755 D67A5829 C138A470 8BE7A4F2 6ED0894C host.exe D22E4B89 56E1831F F0F9D076 20EC19BF 171F0C29 libbind9.dll 81588F0B E7D3C6B3 20EDC314 532D9F2D 0A105594 libdns.dll E0BD7187 BBC01003 ABFE7472 E64B68CD 1BDB6BAB libeay32.dll F445362E 728A9027 96EC6871 A79C6307 054974E4 libisc.dll B3255C0E 4808A703 F95C217A 91FFCD69 40E680C9 libisccfg.dll DFBDE4F9 E25FD49A 0846E97F D813D687 6DC94067 liblwres.dll 61B8F573 DB448AE6 351AE347 5C2E7C48 2D81533C msvcr70.dll BDA14B28 7987E168 F359F0C9 DD96866D 04AB189B resolv.conf 1112343A 319C3EEE E44BF261 AE196C96 289C70E2 sha1.exe 21D20035 2A5B64E2 69FEA407 4D78053F 3C7A2738 whois.exe If your hashes are the same as the above table, then your files pass the integrity check. -
Streamlining Integrated Infrastructure Implementation “Dig Once” Strategy Development Workshop June 9, 2016
Streamlining Integrated Infrastructure Implementation “Dig Once” Strategy Development Workshop June 9, 2016 Workshop Report February 2017 Sponsored By: Alliance for the Chesapeake Bay Local Government Advisory Committee (LGAC) Funding: National Fish & Wildlife Foundation (NFWF) Prepared By: Alliance for the Chesapeake Bay Hirschman Water & Environment, LLC 1. Workshop Overview and Focus The focus of this workshop was to explore better ways to integrate green infrastructure (GI) into other infrastructure projects, such as roads, school and park improvements, and other capital projects. The workshop was hosted by the Alliance for the Chesapeake Bay (ACB) in conjunction with the Local Government Advisory Committee to the Chesapeake Executive Council (LGAC), with funding from the National Fish & Wildlife Foundation (NFWF). Mary Gattis, Director of Local Government Programs for ACB, was the lead facilitator for the workshop. The workshop was held on June 9, 2016 at the Eisenhower Hotel in Gettysburg, Pennsylvania. The organizers targeted certain sector representatives for attendance in order to achieve the necessary cross-section of experiences and points of view. Figure 1 shows the breakdown of attendees by type of organization. A total of 58 individuals attended the 1-day workshop, 52 participants and six staff representatives. See Appendix A for a list of workshop participants. Prior to the workshop, the following problem statement and workshop goal Figure 1. Representation of 52 Workshop Attendees were sent to attendees as part of the agenda. This was done in order to maintain a clear focus for the workshop, as the topic of green infrastructure has many facets, each of which could fill the entire agenda for a one-day event. -
Where Do You Want to Go Today? Escalating
Where Do You Want to Go Today? ∗ Escalating Privileges by Pathname Manipulation Suresh Chari Shai Halevi Wietse Venema IBM T.J. Watson Research Center, Hawthorne, New York, USA Abstract 1. Introduction We analyze filename-based privilege escalation attacks, In this work we take another look at the problem of where an attacker creates filesystem links, thereby “trick- privilege escalation via manipulation of filesystem names. ing” a victim program into opening unintended files. Historically, attention has focused on attacks against priv- We develop primitives for a POSIX environment, provid- ileged processes that open files in directories that are ing assurance that files in “safe directories” (such as writable by an attacker. One classical example is email /etc/passwd) cannot be opened by looking up a file by delivery in the UNIX environment (e.g., [9]). Here, an “unsafe pathname” (such as a pathname that resolves the mail-delivery directory (e.g., /var/mail) is often through a symbolic link in a world-writable directory). In group or world writable. An adversarial user may use today's UNIX systems, solutions to this problem are typ- its write permission to create a hard link or symlink at ically built into (some) applications and use application- /var/mail/root that resolves to /etc/passwd. A specific knowledge about (un)safety of certain directories. simple-minded mail-delivery program that appends mail to In contrast, we seek solutions that can be implemented in the file /var/mail/root can have disastrous implica- the filesystem itself (or a library on top of it), thus providing tions for system security. -
Unix/Linux Command Reference
Unix/Linux Command Reference .com File Commands System Info ls – directory listing date – show the current date and time ls -al – formatted listing with hidden files cal – show this month's calendar cd dir - change directory to dir uptime – show current uptime cd – change to home w – display who is online pwd – show current directory whoami – who you are logged in as mkdir dir – create a directory dir finger user – display information about user rm file – delete file uname -a – show kernel information rm -r dir – delete directory dir cat /proc/cpuinfo – cpu information rm -f file – force remove file cat /proc/meminfo – memory information rm -rf dir – force remove directory dir * man command – show the manual for command cp file1 file2 – copy file1 to file2 df – show disk usage cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if it du – show directory space usage doesn't exist free – show memory and swap usage mv file1 file2 – rename or move file1 to file2 whereis app – show possible locations of app if file2 is an existing directory, moves file1 into which app – show which app will be run by default directory file2 ln -s file link – create symbolic link link to file Compression touch file – create or update file tar cf file.tar files – create a tar named cat > file – places standard input into file file.tar containing files more file – output the contents of file tar xf file.tar – extract the files from file.tar head file – output the first 10 lines of file tar czf file.tar.gz files – create a tar with tail file – output the last 10 lines -
CMSC 331 Midterm Exam, Fall 2010 a 5 30
1 40/ 2 30/ 3 45/ 331Midterm Exam 01 November 2010 4 30/ CMSC 331 Midterm Exam, Fall 2010 a 5 30/ 6 30/ 7 20/ Name: _________________________________ -------------- UMBC username:_____________________________ 225/ You will have seventy-five (75) minutes to complete this closed book/notes exam. Use the backs of these pages if you need more room for your answers. Describe any assumptions you make in solv- ing a problem. We reserve the right to assign partial credit, and to deduct points for answers that are needlessly wordy. 1. True/False [40] For each of the following questions, circle T (true) or F (false). T F 1.1 COBOL was designed as a programming language for scientific and engineering applica- tions. FALSE T F 1.2 The procedural programming paradigm treats procedures as first class objects. FALSE T F 1.3 The “Von Neumann” computer architecture is still used as the basis for most computers today. TRUE T F 1.4 One of the advantages of interpreted over compiled languages is that they tend to offer more run time debugging support. TRUE T F 1.5 Any finite language can be defined by a regular expression. TRUE T F 1.6 Attribute grammars can specify languages that can not be specified using a context free grammar. TRUE T F 1.7 A recursive descent parser can not directly use a grammar that has right recursive rules. FALSE T F 1.8 The lexical structure of complex programming languages like Java can not be defined using regular expressions. FALSE T F 1.9 A non-deterministic finite automaton for a regular language is generally easier to write than a deterministic one, but harder to apply to a string to see if it matches. -
Manipulating Files and Directories
MANIPULATING FILES AND DIRECTORIES At this point, we are ready for some real work! This chapter will introduce the following commands: z cp—Copy files and directories. z mv—Move/rename files and directories. z mkdir—Create directories. z rm—Remove files and directories. z ln—Create hard and symbolic links. These five commands are among the most frequently used Linux com- mands. They are used for manipulating both files and directories. Now, to be frank, some of the tasks performed by these commands are more easily done with a graphical file manager. With a file manager, we can drag and drop a file from one directory to another, cut and paste files, delete files, and so on. So why use these old command-line programs? www.it-ebooks.info The answer is power and flexibility. While it is easy to perform simple file manipulations with a graphical file manager, complicated tasks can be easier with the command-line programs. For example, how could we copy all the HTML files from one directory to another—but only those that do not exist in the destination directory or are newer than the versions in the destination directory? Pretty hard with a file manager. Pretty easy with the command line: cp -u *.html destination Wildcards Before we begin using our commands, we need to talk about the shell fea- ture that makes these commands so powerful. Because the shell uses file- names so much, it provides special characters to help you rapidly specify groups of filenames. These special characters are called wildcards. -
An Incremental Path Towards a Safer OS Kernel
An Incremental Path Towards a Safer OS Kernel Jialin Li Samantha Miller Danyang Zhuo University of Washington University of Washington Duke University Ang Chen Jon Howell Thomas Anderson Rice University VMware Research University of Washington LoC Abstract Incremental Progress Tens of Linux Safe Linux Linux has become the de-facto operating system of our age, Millions FreeBSD but its vulnerabilities are a constant threat to service availabil- Hundreds of Singularity ity, user privacy, and data integrity. While one might scrap Thousands Biscuit Linux and start over, the cost of that would be prohibitive due Theseus Thousands RedLeaf seL4 to Linux’s ubiquitous deployment. In this paper, we propose Hyperkernel Safety an alternative, incremental route to a safer Linux through No Type Ownership Functional proper modularization and gradual replacement module by Guarantees Safety Safety Verification module. We lay out the research challenges and potential Figure 1: Our vision and the current state of systems. solutions for this route, and discuss the open questions ahead. security vulnerabilities are reported each year, and lifetime CCS Concepts analysis suggests that the new code added this year has intro- duced tens of thousands of more bugs. ! • Software and its engineering Software verification; While operating systems are far from the only source of se- ! • Computer systems organization Reliability. curity vulnerabilities, it is hard to envision building trustwor- Keywords thy computer systems without addressing operating system correctness. kernel safety, verified systems, reliable systems One attractive option is to scrap Linux and start over. Many ACM Reference Format: past works focus on building more secure and correct op- Jialin Li, Samantha Miller, Danyang Zhuo, Ang Chen, Jon Howell, erating systems from the ground up: ones based on strong and Thomas Anderson. -
Linux Cheat Sheet
1 of 4 ########################################### # 1.1. File Commands. # Name: Bash CheatSheet # # # # A little overlook of the Bash basics # ls # lists your files # # ls -l # lists your files in 'long format' # Usage: A Helpful Guide # ls -a # lists all files, including hidden files # # ln -s <filename> <link> # creates symbolic link to file # Author: J. Le Coupanec # touch <filename> # creates or updates your file # Date: 2014/11/04 # cat > <filename> # places standard input into file # Edited: 2015/8/18 – Michael Stobb # more <filename> # shows the first part of a file (q to quit) ########################################### head <filename> # outputs the first 10 lines of file tail <filename> # outputs the last 10 lines of file (-f too) # 0. Shortcuts. emacs <filename> # lets you create and edit a file mv <filename1> <filename2> # moves a file cp <filename1> <filename2> # copies a file CTRL+A # move to beginning of line rm <filename> # removes a file CTRL+B # moves backward one character diff <filename1> <filename2> # compares files, and shows where differ CTRL+C # halts the current command wc <filename> # tells you how many lines, words there are CTRL+D # deletes one character backward or logs out of current session chmod -options <filename> # lets you change the permissions on files CTRL+E # moves to end of line gzip <filename> # compresses files CTRL+F # moves forward one character gunzip <filename> # uncompresses files compressed by gzip CTRL+G # aborts the current editing command and ring the terminal bell gzcat <filename> #