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  • Great programming quotes

    - by epatel
    There are a lot of great programming quotes out there. Which do you like? Today (Sept 12, 2008) I heard a new one from a friend, Lars-Gunnar, he said "Gud finns i Emacs" (in Swedish). This basically means "God is in Emacs". Still laughing about it here :) What he meant was that a function "gud is grand-unified-debugger" is in Emacs. A great one I think all programmers should know is The Three Great Virtues of a Programmer.

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  • Setting variables in shell script by running commands

    - by rajya vardhan
    >cat /tmp/list1 john jack >cat /tmp/list2 smith taylor It is guaranteed that list1 and list2 will have equal number of lines. f(){ i=1 while read line do var1 = `sed -n '$ip' /tmp/list1` var2 = `sed -n '$ip' /tmp/list2` echo $i,$var1,$var2 i=`expr $i+1` echo $i,$var1,$var2 done < $INFILE } So output of f() should be: 1,john,smith 2,jack,taylor But getting 1,p,p 1+1,p,p If i replace following: var1 = `sed -n '$ip' /tmp/list1` var2 = `sed -n '$ip' /tmp/list2` with this: var1=`head -$i /tmp/vip_list|tail -1` var2=`head -$i /tmp/lb_list|tail -1` Then output: 1,john,smith 1,john,smith Not an expert of shell, so please excuse if sounds childish :)

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  • distributed system programming with php

    - by ranganaMIT
    Hi guys, I'm doing a system for a hospital in my country as the final year project of my degree, my supervisor specially asked me to use php and mysql for this. i don't have any experience with distributed systems and php programming, can any one help me out to build my base and improove my knowledge stating some sites, books to refer to overcome this matter. regards, rangana.

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  • Build Systems for PHP Web Apps

    - by macinjosh
    I want to start automating more of my web development process so I'm looking for a build system. I write mostly PHP apps on Mac OS X and deploy Linux servers over FTP. A lot of my clients have basic hosting providers so shell access to their servers is typically not available, however remote MySQL access is usually present. Here is what I want to do with a build system: When Building: Lint JavaScript Files Validate CSS Files Validate HTML Files Minify and concatenate JS and CSS files Verify PHP Syntax Set Debug/Production flags When Deploying Checkout latest version from SVN Run build process Upload files to server via FTP Run SQL scripts on remote DB I realize this is a lot of work to automate but I think it would be worth it. So what is the best way to start down this path? Is there a system that can handle builds and deploys, or should I search for separate solutions? What systems would you recommend?

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  • Logging from multiple apps/processes to a single log file

    - by Andrew
    Our app servers (weblogic) all use log4j to log to the same file on a network share. On top of this we have all web apps in a managed server logging errors to a common error.log. I can't imagine this is a good idea but wanted to hear from some pros. I know that each web app has its own classloader, so any thread synchronization only occurs within the app. So what happens when multiple processes start converging on a single log file? Can we expect interspersed log statements? Performance problems? What about multiple web apps logging to a common log file? The environment is Solaris.

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  • Custom installation directories

    - by Alex Farber
    Let's say I am writing installation script for the program which contains executable file and shared library. By default, this script places executable to /usr/local/bin, and shared library to /usr/local/lib. In this case my program may be executed by any user by typing its name in the command line. Suppose that user selects custom installation directory, like ~/myprogram/. Is it user's responsibility to ensure that my program may be executed, or my installation script must do this?

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  • Running pl/sql in Korn Shell(AIX)

    - by learner135
    I have a file to execute in Ksh written by someone. It has a set of commands to execute in sqlplus. It starts with, sqlplus -s $UP <<- END followed by a set of ddl commands such as create,drop,etc., When I execute the file in the shell, I get the error in the starting line quoted above. I understand "-s" starts the sqlplus in silent mode and $UP is the connection string with username/password. But I couldn't make heads or tails of "<<- END" part(Many sites from google says input redirection is "<<" not "<<-"). So I presumed the error must be in that part and removed it from the file. Now it reads, sqlplus -s $UP But once I execute the file, It waits for input from the shell, instead of reading the rest of the lines from the file. How would I make sqlplus to execute the ddl commands in the rest of the file?. Thanks in advance.

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  • Common programming mistakes in .Net when handling exceptions?

    - by Jared Coleson
    What are some of the most common mistakes you've seen made when handling exceptions? It seems like exception handling can be one of the hardest things to learn how to do "right" in .Net. Especially considering the currently #1 ranked answer to Common programming mistakes for .NET developers to avoid? is related to exception handling. Hopefully by listing some of the most common mistakes we can all learn to handle exceptions better.

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  • Have you ever tried programming in Malbolge?

    - by eleven81
    Have you ever tried programming in Malbolge? I have read some of the top links returned by google, here, here, here, and here. I am very intrigued by this prospect, and would like to start playing around. For those of you who have dabbled in Malbolge before, what experiences did you have? Did you have any success? How did you get started, and where did you end up? Thanks!

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  • windows programming problem

    - by Jayjitraj
    I want to write programming which will connect to a network for some second then disconnect from it and it should be that much fast that other application should not fill it is disconnected so on which layer should i program i know how to disconnect and connect to the network so any suggestion ...... thanks in advance....

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  • Shell script task status monitoring

    - by Bikram Agarwal
    I'm running an ANT task in background and checking in 60 second intervals whether that task is complete or not. If it is not, every 60 seconds, a message should be displayed on screen - "Deploy process is still running. $slept seconds since deploy started", where $slept is 60, 120, 180 n so on. There's a limit of 1200 seconds, after which the script will show the log via 'ant log' command and ask the user whether to continue. If the user chooses to continue, 300 seconds are added to the time limit and the process repeats. The code that I am using for this task is - ant deploy & limit=1200 deploy_check() { while [ ${slept:-0} -le $limit ]; do sleep 60 && slept=`expr ${slept:-0} + 60` if [ $$ = "`ps -o ppid= -p $!`" ]; then echo "Deploy process is still running. $slept seconds since deploy started." else wait $! && echo "Application ${New_App_Name} deployed successfully" || echo "Deployment of ${New_App_Name} failed" break fi done } deploy_check if [ $$ = "`ps -o ppid= -p $!`" ]; then echo "Deploy process did not finish in $slept seconds. Here's the log." ant log echo "Do you want to kill the process? Press Ctrl+C to kill. Press Enter to continue." read log limit=`expr ${limit} + 300` deploy_check fi Now, the problem is - this code is not working. This looks like a perfectly good code and yet, this is not working. Can anyone point out what is wrong with this code, please.

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  • aumix problem- how can I make the changes permenantly

    - by thillai-selvan
    Hai every one. How can I make the changes in the aumix permanently? I am running the aumix application using the following command thinapplaunch aumix. I am increasing the volume manually. I saved and quit. I am again launching that application using the same command. thinapplaunch aumix Now all the changes I made is still there. All the volumes are full. But when I logged out and login again the changes is not exists. All the volumes are not full. How can I make the changes permanently? Any help much appreciated. Thanks in Advance!!!

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  • winwindows programming problem

    - by Jayjitraj
    I want to write programming which will connect to a network for some second then disconnect from it and it should be that much fast that other application should not fill it is disconnected so on which layer should i program i know how to disconnect and connect to the network so any suggestion ...... thanks in advance....

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  • iteratively creating graphs

    - by Andrei
    I have a bunch of files containing x and y coordinates, representing time and value (space-separated, but can be amended) For example: 15:06:59 0.0140 ....... I want to create a word file (or some equivalent) to show all these graphs. Right now I am using Excel. It pretty daunting task, as I ahve to plug paste numbers in two rows for each graph, and I have many of them. Thanks

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  • Why Does Piping Binary Text to the Screen often Horck a Terminal

    - by Alan Storm
    Imaginary Situation: You’ve used mysqldump to create a backup of a mysql database. This database has columns that are blobs. That means your “text” dump files contains both strings and binary data (binary data stored as strings?) If you cat this file to the screen $ cat dump.mysql you’ll often get unexpected results. The terminal will start beeping, and then the output finishes scrolling by you’ll often have garbage chacters entered on your terminal as through you’d typed them, and sometimes your prompts and anything you type will be garbage characters. Why does this happen? Put another way, I think I’m looking for an overview of what’s actually happening when you store binary strings into a file, and when you cat those files, and when the results of the cat are reported to the terminal, and any other steps I’m missing.

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  • Exit SSH from the script

    - by Kimi
    I Want to exit ssh: Does the below line work: ssh -f -T ${USAGE_2_USER}@${USAGE_2_HOST} Or do i need to write it some other way . Please tell should I use exit with ssh an how?

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  • awk output to a file

    - by Harish
    I need help in moving the contents printed by awk to a text file. THis is a continuation of previous quesion I have to move all the contents into the same file so it is appending. To be specific nawk -v file="$FILE" 'BEGIN{RS=";"} /select/{ gsub(/.*select/,"select");gsub(/\n+/,"");print file,$0;} /update/{ gsub(/.*update/,"update");gsub(/\n+/,"");print file,$0;} /insert/{ gsub(/.*insert/,"insert");gsub(/\n+/,"");print file,$0;} ' "$FILE" How to get the print results to a text file appended one after the other in the same file?

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  • How to use parallel execution in a shell script?

    - by eSKay
    I have a C shell script that does something like this: #!/bin/csh gcc example.c -o ex gcc combine.c -o combine ex file1 r1 <-- 1 ex file2 r2 <-- 2 ex file3 r3 <-- 3 #... many more like the above combine r1 r2 r3 final \rm r1 r2 r3 Is there some way I can make lines 1, 2 and 3 run in parallel instead of one after the another?

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