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  • How to pass in password to pg_dump?

    - by Mark
    I'm trying to create a cronjob to back up my database every night before something catastrophic happens. It looks like this command should meet my needs: pg_dump dbname | gzip > $(date +%Y-%m-%d).psql.gz Except after running that, it expects me to type in a password. I can't do that if I run it from cron. How can I pass one in automatically?

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  • Jquery in chrome plugin

    - by Cyclone
    There is jquery on the page my script is trying to access, and the code I am trying to execute runs fine in console. However, when I use chrome.tabs.executeScript on that single tab, it says that $ is undefined. How can I fix this? Thanks for the help!

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  • Ignoring specific differences in diff

    - by naumcho
    When doing recursive diffs I want to ignore expected differences/translations - is there a way to do that with standard unix tools? E.g. file1: 1 ... 2 /path/to/something/ver1/blah/blah 3 /path/to/something/ver1/blah/blah 4 ... file2: 1 ... 2 /path/to/something/ver2/blah/blah 3 /path/to/something/ver3/blah/blah 4 ... I want to be able to do something like: diff file1 file2 --ignore-transltion "ver1>ver2" This should show only show me that line 3 is different Does anyone know of a good way to do that? I can easily write a perl script to do it but i will end up re-implementing most of the rest of the functionality of 'diff'. Update: My goal is to run this on directories with different versions of the same files with "diff -r" so I can spot unexpected differences in versions.

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  • Extract IDs from CSS

    - by nosuchip
    I've the CSS file with many entry like id1, #id2, #id3, #id4 { ... } id3, #id2 { ... } id2, #id4 { ... } I want to extract list of unique IDs using command line tools (msys). Unique means any entry in list presented only once. How? PS: I know how doing it using python, but what about awk/sed/cat?

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  • How do i pass null into stdin like this perl code?

    - by acidzombie24
    This is my question and apparently this is the answer. I found you can stdout to null by writing NUL in command prompt so i tried writing < NUL at the end of my argument. No luck. How do i pass in null or do something with the IO locks like that perl code does so i can get my ffmpeg script not locking up after 15 or so seconds?

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  • How to get line count from variable (from MYSQL query)?

    - by Mint
    My problematic code: testMYSQL=`mysql -u $mysqlUser -p$mysqlPass -h $mysqlHost --skip-column-names --batch -D $mysqlDB -e "SELECT $select FROM $mysqlTable WHERE nameTXT='test';"` $testMYSQL now contains: test test test Then I do: TEST=$(echo $testMYSQL | wc -l) echo "$TEST" I would of thought that would work, but it doesn't, it returns 1 But if I put this into $testMYSQL: "test\ntest\ntest" it will say 3… Whats going on here? does MYSQL not use new lines? PS, I know I can use a for loop to loop though the lines then count up the lines that way, but I was hoping for a simpler solution like wc

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  • How to check an exectuable's path is correct in PHP?

    - by nickf
    I'm writing a setup/installer script for my application, basically just a nice front end to the configuration file. One of the configuration variables is the executable path for mysql. After the user has typed it in (for example: /path/to/mysql-5.0/bin/mysql or just mysql if it is in their system PATH), I want to verify that it is correct. My initial reaction would be to try running it with "--version" to see what comes back. However, I quickly realised this would lead to me writing this line of code: shell_exec($somethingAUserHasEntered . " --version"); ...which is obviously a Very Bad Thing. Now, this is a setup script which is designed for trusted users only, and ones which probably already have relatively high level access to the system, but still I don't think the above solution is something I want to write. Is there a better way to verify the executable path? Perhaps one which doesn't expose a massive security hole?

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  • piping to variables

    - by lego69
    cut -d" " -f2 ${2} | $callsTo hello, can somebody please explain can I pipe the result of cut to variable callsTo, and how will it be stored, as the string or list?

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  • Several ways to call a windows batch file from another one or from prompt. Which one in which case?

    - by dim
    A windows batch file (called.bat or called.cmd) can be called from another batch file (caller.bat or caller.cmd) or interactive cmd.exe prompt in several ways: direct call: called.bat using call command: call called.bat using cmd command: cmd /c called.bat using start command: start called.bat I'm quite in trouble to differentiate their intended usage based on their help text: when to use which one? e.g. why I might use 'call' command instead of direct call. What's different? I'm interested on some summary report that analyze all 4 possibilities (and others if any missing) from various point of views: recommended use cases for which they are designed to fit, process spawning, execution context, environment, return code processing. Note: I'm using Windows XP SP3.

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  • How does the #! work?

    - by mocybin
    In a script you must include a #! on the first line followed by the path to the program that will execute the script (e.g.: sh, perl). As far as I know though, the # character denotes the start of a comment and that line is supposed to be ignored by the program executing the script. It would seem though, that this first line is at some point read by something in order for the script to be executed by the proper program. Could somebody please shed more light on the workings of the #! ? Edit: I'm really curious about this, so the more in-depth the answer the better.

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  • Python 3.1: Syntax Error for Everything! (Mac OS X)

    - by Nathan G.
    I updated to Python 3.1.3 (I've got OS X 10.6). If I type python in Terminal, I get a working 2.6.1 environment. If I type python3 in Terminal, I get a 3.1.3 environment. Everything looks fine until I do something. If I try to run print "hello", I get a syntax error. This problem is the same in IDLE. I tried deleting everything for 3.1 and then reinstalling, but it hasn't worked. Ideas? Thanks in advance!

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  • chrome.tab.onactivated

    - by Leon Cunningham
    Can someone please show me how to use the chrome.tabs.onActivated. I would like to refresh the tab that is clicked/activated if the url equals: www.example.com. Or if this is the wrong method please tell me what to use. Can someone please show me how to use the chrome.tabs.onActivated. I would like to refresh the tab that is clicked/activated if the url equals: www.example.com. Or if this is the wrong method please tell me what to use.

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  • [Linux] Incremental search on command line?

    - by florianbw
    I'd like to write small scripts which feature incremental search (find-as-you-type) on the command line. Use case: I have my mobile phone connected via USB, Using gammu --sendsms TEXT I can write text messages. I have the phonebook as CSV, and want to search-as-i-type on that. What's the easiest/best way to do it? It might be in bash/zsh/perl/python or any other scripting language. Thanks!

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  • sum up value from textfile - bash

    - by user3493435
    I am trying to sum up the values in a textfile try.txt firstNumber,1 secondNumber,2 I tried with this script #!/bin/bash while IFS, read -r -a array; do printf "%s %s\n" "${array[0]} ${array[1]}" for n in "${array[1]}"; do ((total += n)) echo "total =" $total done done < try.txt and I landed up with this output firstNumber 1 total = 1 secondNumber 2 total = 3 expected output firstNumber 1 secondNumber 2 total = 3 Thanks in advance

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  • Get last row of many matrices (ASCII text files) and create a new matrix from these rows

    - by nofunsally
    I have over a thousand matrices (6 x 2000, ASCII files, comma delimited) that I generated from MATLAB. I want to get the last row of each matrix / text file and save them in a new matrix / text file. The text files have crazy names so when I load them I can name them whatever. Right now I would do this to achieve my goal: % A = load('crazyname.txt'); % B = load('crazynameagain.txt'); % C = load('crazynameyetagain.txt'); A = [5 5 5; 5 5 5; 1 1 1]; B = [5 5 5; 5 5 5; 2 2 2]; C = [5 5 5; 5 5 5; 3 3 3]; D(1,:)=A(end,:); D(2,:)=B(end,:); D(3,:)=C(end,:); I will create each command (e.g. load, building D step by step) in Excel by combining text cells to create a command. Is there a better way to do this? Could I load / assign the matrices with a name that would better suit them to be used in a for loop? Or is some other MATLAB command that would facilitate this? Thanks.

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  • How to find files older than N days from a given timestamp

    - by JGeZau
    I want to find files older than N days from a given timestamp in format YYYYMMDDHH I can find file older than 2 days with the below command, but this finds files with present time find /path/to/dir -mtime -2 -type f -ls Lets say I give the input timeSamp=2011093009 so I want to find files older than 2 days from 2011093009 Been doing my research, but can't seem to figure it out. ========================================== Found the solution...see below for my Answer.. Thanks

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  • What is the proper way to test is variable is empty in a batch file, If NOT "%1" == "" GOTO SomeLabe

    - by blak3r
    I need to test if a variable is set or not. I've tried several techniques but they seem to fail whenever %1 is surrounded by quotes such as the case when %1 = "c:\some path with spaces". IF NOT %1 GOTO MyLabel // This is invalid syntax IF "%1" == "" GOTO MyLabel // Works unless %1, otherwise fatally kills bat execution IF %1 == GOTO MyLabel // Gives an unexpected GOTO error. According to this site. These are the support IF syntax types. So, I don't see a way to do it. IF [NOT] ERRORLEVEL number command IF [NOT] string1==string2 command IF [NOT] EXIST filename command

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  • How to fix "Xlib: extension "RECORD" missing on display :1" in vnc session?

    - by Manish Sapariya
    I am running a JNativeHook capture program on Ubuntu. When I run the session on default X session things are working fine. However when I run the same program from vnc session, it fails with "Xlib: extension "RECORD" missing on display". I checked that this extension is loaded in X which is started by display manager/init. However I am not sure if indeed is initialized during vncserver startup. I could not see anything related in the vnc log. I tried create custom xorg.conf with Module section, which explicitly loads RECORD extension as suggested by many posts but did not help. My environment: Xorg-server: 2.1.12.4-6 tightvncserver: 1.3.9 The same thing works fine on my CentOS 6.4 setup.

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  • Firefox extension to dinamically change superbar icon, similar to windows live messenger.

    - by D Connors
    With seven's new superbar, windows live messenger is now able to display your status on the bar's icon (and not on the system tray). So that got me thinking, maybe a firefox extension could do something similar. Therefore, here's my question to those who understand the workings and spinning wheels behind firefox extensions: could a firefox extension change the superbar icon to display some useful info? Does the current functionality support it? EDIT: I think my question is not really clear. I just want to know if it's theoritically possible for a firefox addon to change the superbar icon dinamically. For instance, windows live messenger changes the icon acording to your status, and gmail notifier plus changes the icon according to your unread messages count. I'm just wondering if firefox as it is right now supports an extension with that functionality. I know that no current extensions do it, and I'm not looking for a gmail notifier (that was just an example). thanks

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  • What is the list of special variables available when writing a shell command for a context menu

    - by giovanni.pellicciotta
    When extending the Windows' shell context menu (e.g. for adding an 'Open command here' prompt on directories), a 'command' key needs to be created in the registry. The value of this 'command' key apparently can be any valid command line. I want to know which 'special variables' are available for use inside this command line. For example, I use following command for opening and cmd window from within a directory's context menu (*): cmd.exe /e:on /f:on /s /k pushd "%V" I cannot find any reference to what %V actually means or what the full list of such variables is. (*) Following registry keys are created for this: [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Directory\shell\cmdshell] @=Open Command Prompt Here" HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Directory\shell\cmdshell\command] @="cmd.exe /e:on /f:on /s /k pushd \"%V\""

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