gnu and unix commands topic 103
Tài liệu Quản trị mạng Understanding the Ping and Traceroute Commands
... Cisco − Understanding the Ping and Traceroute Commands Table of Contents Understanding the Ping and Traceroute Commands Introduction The Ping Command ... packets are now handled at interrupt level Using the Debug Command Before issuing debug commands, please see Important Information on Debug Commands The different debug commands we have used ... Cisco − Understanding the Ping and Traceroute Commands N Network unreachable P Protocol Unreachable T Timeout ? Unknown packet type Performance Using the ping and traceroute commands, we obtain...
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Directory and File Commands
... program The format for the redirection of standard input, standard output, and standard error is: command > file or command >> file command < file command 2> file Angle Brackets ( >, ) Use ... data to a command Output – Receiving data from a command Error - Errors generated by a command Standard input Command Standard output The Linux computing environment enables command I/O to be ... takes the standard output of one command and passes it as standard input into a following command In effect, pipes enable you to build a miniature program You must always have a command on each...
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Executing SELECT Statements and TableDirect Commands phần 1
... create a SqlCommand object SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); // set the CommandText property of the SqlCommand object to // the SELECT statement mySqlCommand.CommandText = ... when you use a TableDirect command For example, let's say you have a Command object named mySqlCommand with the CommandText property set as follows: mySqlCommand.CommandText = "SELECT ProductID, ... SingleRow Command Behavior You use the SingleRow command behavior to indicate that your Command object returns a single row For example, let's say you have a Command object named mySqlCommand with...
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Executing SELECT Statements and TableDirect Commands phần 2
... object: OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand(); You then set the CommandType of myOleDbConnection to CommandType.TableDirect: myOleDbCommand.CommandType = CommandType.TableDirect; ... ); OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand(); // set the CommandType property of the OleDbCommand object to // TableDirect myOleDbCommand.CommandType = CommandType.TableDirect; ... ); SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); // set the CommandText property of the SqlCommand object to // a SELECT statement that retrieves XML mySqlCommand.CommandText = "SELECT...
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Secure Programming for Linux and Unix HOWTO ppt
... due to random input) 2.1.5 Comparing Linux and Unix This book uses the term Unix- like” to describe systems intentionally like Unix In particular, the term Unix- like” includes all major Unix variants ... “interruption” in the Unix- like OS world, and are an ancient part of Unix A process can set a “signal” on another process (say using kill(1) or kill(2)), and that other process would receive and handle the ... David A Wheeler and is covered by the GNU Free Documentation License (GFDL); see Appendix C and Appendix D for more information Chapter discusses the background of Unix, Linux, and security Chapter...
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Slang and uncoventional english part 103 ppsx
... TRINIDAD AND TOBAGO, 1916 wine and dine verb to entertain someone with wine and food Earlier as ‘dine and wine’ UK, 1916 wine grape noun a Roman Catholic Glasgow rhyming slang for PAPE UK: SCOTLAND, ... girl) UK: SCOTLAND, 1985 to kiss and cuddle Extends from the sense ‘to date, to court’ UK: SCOTLAND, 1985 winchell noun a trusting, unsophisticated person US, 1972 winco noun a wing commander in the ... US, 1974 white pipe noun a mixture of marijuana and crushed Mandrax™ (a branded tranquillizer in tablet form) smoked or ingested orally A tablet of Mandrax, also known as a ‘white’, enhances the...
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Professional ASP.NET 3.5 in C# and Visual Basic Part 103 docx
... Defines how the control deals with its size expansion and shrinkage The possible values include None, Fill, and Limit The default is None and when used, items below the control may move to make ... provided in the CheckedImageAlternateText and UncheckedImageAlternateText properties is used instead You will also have to specify values for the ImageWidth and ImageHeight properties for the page ... form, a Submit button and a RegularExpressionValidator control The RegularExpressionValidator control is built as you normally would, except you make use of the Display property and set it to None...
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Automating Linux and Unix System Administration Second Edition phần 1 potx
... quietly and automatically from within a standard UNIX or Linux system Automation is already a core part of UNIX philosophy, and cron jobs have historically been the de facto method for automating UNIX ... open source and therefore usable on commercial UNIX systems In addition to consistent commands, a consistent filesystem layout can be helpful As we already mentioned, placing custom commands in the ... beginning with simple commands in a shell script to avoid repeatedly typing the same commands Over time the staff enhanced the script with tests to determine which errors were occurring and to describe...
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Automating Linux and Unix System Administration Second Edition phần 2 pps
... provides an editing-specific command that allows you to specify the modifications exactly Using these commands is similar to using The cfengine text-editing commands have low-level abilities in ... checks and fixes the ownership and permissions on , , and It also calculates and records the MD5 checksum of On any system in the class , the permissions on are checked because that is the standard ... process is to create your public- and private-key pair OpenSSH provides a command just for this purpose The following command creates a 2,048-bit RSA key pair and prompts you for a passphrase...
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Automating Linux and Unix System Administration Second Edition phần 3 ppsx
... automated and fully functional UNIX infrastructure 77 CHAPT ER Bootstrapping a New Infrastructure H ow would you feel if you were offered the opportunity to install and configure all the systems and ... system upgrade, and patching procedures is easy before the systems and procedures are put into use Once you’ve been deploying and updating systems using automated means, reorganizing and rebuilding ... directories and start up , , and if they’re not already running These cron entries are our emergency measure intended to get cfengine back up and running if all other measures fail and we either...
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Automating Linux and Unix System Administration Second Edition phần 4 pptx
... Pre-Installation Script in the left-hand pane and leave the screen’s text box blank: Postinstallation Script Screen Select Post-Installation Script in the left-hand pane and paste in this small script ... FAI is a pleasure to work with The directory names and scripts are selfexplanatory, the class mechanism is intuitive and easy to work with, and the packages put useful starting configuration ... of the configuration such as the software group to install and the disk partition (slice) layout The format is easy to understand, and because we’re taking advantage of the sample configuration...
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Automating Linux and Unix System Administration Second Edition phần 5 docx
... and On Solaris, the files are and The and files map filesystem paths to files that contain the commands to mount a remote share at that path The and files have the actual mount commands ... action Note that we have two almost identical restart commands for the and classes We could have reduced that to a single stanza, as we did for the and actions Combining those into one action is left ... infrastructure: a Cisco router at that handles routing, Network Address Translation (NAT), and DNS-caching services After we get DNS up and running on one or more of our UNIX systems, we’ll have cfengine...
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Automating Linux and Unix System Administration Second Edition phần 6 pps
... these commands to test whether the binary works: You should be able to access the web server at http://rhmaster/ and see the text, “It works!” Now shut down the web server with this command: We’re ... to use the command to create the missing repositories because when we used cfengine’s feature to set the user that commands run as (see commented entries), the utility attempted and failed—to ... tasks—adding files and file trees, and working with those files once they’re under Subversion control In later chapters, we’ll cover more advanced topics such as branching and merging To place...
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Automating Linux and Unix System Administration Second Edition phần 7 pdf
... schedule plug-ins and handle notifications, plug-ins to perform host and service checks, NRPE to run plug-ins on remote hosts, and the Nagios CGI web interface to display status and to interact ... software has bugs; and all manner of issues crop up that cause hosts and applications to fail System and service monitoring is automation’s companion tool, used to notify us when systems and applications ... grows have chosen Nagios for our system and service monitoring system Nagios is flexible and mature, and help is widely available on Internet mailing lists and newsgroups ...
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Automating Linux and Unix System Administration Second Edition phần 8 pptx
... with the and commands The command is used to compare text files line by line and show the differences The command takes a file containing a difference listing produced by the program and applies ... repository We logged into the system goldmaster as our own user account and checked out a working copy with these commands: These commands will give us a working copy at Since our home directory is ... process is essentially a and procedure done within the repository, complete with revision history of the merge operation The advantage of merging over manual use of the and commands is that the history...
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Automating Linux and Unix System Administration Second Edition phần 9 potx
... administrators to execute commands that require root privileges with single command like this: This way, root commands are logged via syslog by the command, so our log host gets the logs, and the regular ... sure the commands you enable, especially the ones that grant root privileges, don’t have shell escapes Shell escapes are features that allow shell commands to be executed Any such commands will ... iptables rules using the command, by redirecting the command’s output to a file and loading the rules via the script because this setup is easy for you use and experiment with on...
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Automating Linux and Unix System Administration Second Edition phần 10 potx
... hotcopy command, 346 svn.campin.net file, 244–245 svn commit command, 330 svn copy command, 331 svn import command, 249 svn log command, 335 svn status command, 249 svn update command, 334 synchronizing ... difficult to read and needs some escaping of double quotes, and sometimes, cfengine can get confused when parsing commands like this However, we don’t consider this a reason to put the commands in a ... the section, we ran the command and piped the output into the com and commands enabled us to find the systems that are running the Niagara T1 processor and then to set the class...
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