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  • How do I route watir through a proxy pragmatically?

    - by feydr
    I'm trying to route watir through a proxy pragmatically -- this means within the script I'd like to change my proxy dynamically before launching the browser. Here's what I've tried so far (and so far am failing): I'm running chrome and lucid lynx ubuntu. I chose TREX cause I thought watir might be making use of PROXY or something. I rewrote /usr/bin/google-chrome as: #!/bin/bash /opt/google/chrome/chrome --proxy-server="$TREX" $@ The reason I'm passing in the environment variable to proxy-server rather than http_proxy is because I never could get http_proxy to work as is anyways then I did a simple: require 'rubygems' require 'watir-webdriver' ENV['TREX'] = "XX.XX.XX.XX:YY" browser = Watir::Browser.new(:chrome) browser.goto("http://mysite.com") Anyways, what is happening here is that it is forwarding me to the login page of the proxy rather than just forwarding the request. What am I missing here? I feel like I'm pretty close.

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  • i just want to use the iptables command in my c program.

    - by neha soni
    i m designing a simple c code to call the iptables command according to the need. i just want to drop the packets from a particular ipaddress using my c code. thats why i have to use the iptables command according to input given. is it possible to call the command using c code? if it is then how??? thanks in advance..

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  • unix message queue

    - by Betamoo
    Is there an ipc option to get the last message in message queue but not removing it? I want this to allow many clients reading same messages from the same server.. Thanks

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  • Extracting numeric value from output of a uder defined aggregate in netezza using bash script

    - by Ankit
    I am executing a shell script to execute my user defined aggregate which is taking inputs yavg=nzsql -c 'select avg(x) from Input1' which is giving output like this AVG ---------- 2.000000 (1 row) I want to pass only the numeric(double) value which is 2.0000(where xavg is expected) from this to S4(x,y,$xavg,$yavg) where x and y are the whole column from table Input1, xavg=nzsql -c 'select avg(y) from Input1' Below is my InputTable.txt which is a text file from which I am popluating my "Input1" table in the shell script. 1 2 3 2 1 2 3 2 1 nzsql -c 'create table Input1(x integer, y integer, v integer)' nzload -t Input1 -df InputTable.txt nzsql -c 'select * from Input1 yavg=`nzsql -c 'select avg(x) from Input1'` xavg=`nzsql -c 'select avg(y) from Input1' nzsql -c 'select S4(x,y,$xavg,$yavg) from test' Below is the output : xavg := AVG ---------- 2.000000 (1 row) yavg := AVG ---------- 1.666667 (1 row) and i am passing this value to S4(x,y,$xavg,$yavg) which is a User defined aggregate

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  • write system call to file desciptor ZERO

    - by shadyabhi
    int main ( ) { char C[] = "Hello World"; write(0,C,sizeof(C)); return 0; } In the above program, I am writing to File descriptor ZERO which I suppose by default is STDIN.. Then why I am I getting output at STDOUT? shadyabhi@shadyabhi-desktop:~$ ./a.out Hello Worldshadyabhi@shadyabhi-desktop:~$

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  • BASH tr command

    - by user1457809
    Id like to convert it to uppercase for the simple purpose of formatting so it will adhere to a future case statement. As I thought case statements are case sensitive. I see all over the place the tr command used in concert with echo commands to give you immediate results such as: echo "Enter in Location (i.e. SDD-134)" read answer (user enters "cfg" echo $answer | tr '[:lower:]' '[:upper:]' which produced cfg # first echo not upper? echo $answer #echo it again and it is now upper... CFG

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  • How can I untar a sub directory?

    - by Kristopher Ives
    Suppose I have a tar that contains: / # Root directory /level1/ # A sub directory /level1/a.file /level1/b.file /level1/... # The rest How can I do something like tar -xf that would untar the contents level1/ like this: /a.file /b.file /... # The rest

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  • problem with fork()

    - by john
    I'm writing a shell which forks, with the parent reading the input and the child process parsing and executing it with execvp. pseudocode of main method: do{ pid = fork(); print pid; if (p<0) { error; exit; } if (p>0) { wait for child to finish; read input; } else { call function to parse input; exit; } }while condition return; what happens is that i never seem to enter the child process (pid printed is always positive, i never enter the else). however, if i don't call the parse function and just have else exit, i do correctly enter parent and child alternatingly. full code: int main(int argc, char *argv[]){ char input[500]; pid_t p; int firstrun = 1; do{ p = fork(); printf("PID: %d", p); if (p < 0) {printf("Error forking"); exit(-1);} if (p > 0){ wait(NULL); firstrun = 0; printf("\n> "); bzero(input, 500); fflush(stdout); read(0, input, 499); input[strlen(input)-1] = '\0'; } else exit(0); else { if (parse(input) != 0 && firstrun != 1) { printf("Error parsing"); exit(-1); } exit(0); } }while(strcmp(input, "exit") != 0); return 0; }

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  • Implementing Communication Protocols on CC2420 motes powered by TinyOS

    - by stanigator
    I would like to load TinyOS on CC2420 radio motes to operate on certain communication protocols (e.g. epidemic routing, probabilistic routing, etc.). However, I have no prior experience in programming motes to perform the protocols I want. I'm just wondering about the most applicable resources for reference and how difficult (if not impossible) was implementing such mentioned protocols. It would be great to hear from you. Thanks in advance!

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  • GTK+ Compile Error

    - by Alon
    When trying to compile GTK+ with target for DirectFB, it throws: configure: error: conditional "XINPUT_NONE" was never defined. Usually this means the macro was only invoked conditionally. Any ideas? Thanks.

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  • syscall from within GCC inline assembly

    - by guest
    is it possible to write a single character using a syscall from within an inline assembly block? if so, how? it should look "something" like this: __asm__ __volatile__ ( " movl $1, %%edx \n\t" " movl $80, %%ecx \n\t" " movl $0, %%ebx \n\t" " movl $4, %%eax \n\t" " int $0x80 \n\t" ::: "%eax", "%ebx", "%ecx", "%edx" ); $80 is 'P' in ascii, but that returns nothing. any suggestions much appreciated!

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  • link .a and .o files in GCC

    - by David
    hi! I have two precompiled library: X.a and Y.a and a test.cpp (without main function) source code use these two libraries. I compiled the C++ using: g++ -c test.cpp and I got 'test.o'. Now how can I link these three together to generate a .a file because test.cpp use some function in X.a and Y.a and other GCC libraries? BTW, I am doing these under Windows using MinGW. Can I rename this .a file to .lib and use this .lib in VC? Thanks!

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  • How to interpret the contents of /proc/bus/pci/devices ?

    - by vivekian2
    The first few fields of 'cat /proc/bus/pci/devices' are understandable. Field 1 - BusDevFunc Field 2 - Vendor Id + Device Id Field 3 - Interrupt Line Field 4 - BAR 0 and the rest of the BAR registers (0 - 5) after that. After the BAR registers are printed out, what are the other fields? Specifically, what PCI configuration space registers(offsets) are printed out?

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  • Accidentally deleted /opt/local/bin without backup. Any help?

    - by Aaron
    Hi all, I'm on a Mac OS X 10.5.8 I was recently uninstalling mysql5 from /opt/local/bin. I typed: rm -rf /opt/local/bin mysql* instead of rm -rf /opt/local/bin/mysql* This deleted my entire /opt/local/bin directory which puts me in a bit of a bind. Is there any way to recover these files? If not, I have a friend that is using a similar set of programs, would it be possible to use the contents of his folder? If I end up needing to re-install everything in this folder, what is the best way to go about doing this? Thanks in advance!

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  • Dynamic loading of shared objects using dlopen()

    - by Andy
    Hi, I'm working on a plain X11 app. By default, my app only requires libX11.so and the standard gcc C and math libs. My app has also support for extensions like Xfixes and Xrender and the ALSA sound system. But this feature shall be made optional, i.e. if Xfixes/Xrender/ALSA is installed on the host system, my app will offer extended functionality. If Xfixes or Xrender or ALSA is not there, my app will still run but some functionality will not be available. To achieve this behaviour, I'm not linking dynamically against -lXfixes, -lXrender and -lasound. Instead, I'm opening these libraries manually using dlopen(). By doing it this way, I can be sure that my app won't fail in case one of these optional components is not present. Now to my question: What library names should I use when calling dlopen()? I've seen that these differ from distro to distro. For example, on openSUSE 11, they're named the following: libXfixes.so libXrender.so libasound.so On Ubuntu, however, the names have a version number attached, like this: libXfixes.so.3 libXrender.so.1 libasound.so.2 So trying to open "libXfixes.so" would fail on Ubuntu, although the lib is obviously there. It just has a version number attached. So how should my app handle this? Should I let my app scan /usr/lib/ first manually to see which libs we have and then choose an appropriate one? Or does anyone have a better idea? Thanks guys, Andy

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  • Remove a special character and Insert that to a line

    - by Kraj
    How to remove a special character(#) from a big file and insert that character to a particular line for example input.tsv $22 23 24 25 26 33 33 34 35 36 44 45 46 47 48 ID ID1 ID2 ID3 ID4 Output.tsv 22 23 24 25 26 33 33 34 35 36 44 45 46 47 48 $ID ID1 ID2 ID3 ID4 I've used the sed -e 's/#//g' input.tsv file to remove the '$' then how can I include '$' to the line starting with ID

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  • Sum in shell script

    - by Dinis Monteiro
    Why can't I create a sum of total words in this script? I get the result something like: 120+130 but it isn't 250 (as I expected)! Is there any reason? #!/bin/bash while [ -z "$count" ] ; do echo -e "request :: please enter file name " echo -e "\n\tfile one : \c" read count itself=counter.sh countWords=`wc -w $count |cut -d ' ' -f 1` countLines=`wc -l $count |cut -d ' ' -f 1` countWords_=`wc -w $itself |cut -d ' ' -f 1` echo "Number of lines: " $countLines echo "Number of words: " $countWords echo "Number of words -script: " $countWords_ echo "Number of words -total " $countWords+$countWords_ done if [ ! -e $count ] ; then echo -e "error :: file one $count doesn't exist. can't proceed." read empty exit 1 fi

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  • Script to Copy User according to UID

    - by bradlis7
    I'm looking for a way to copy all non-system users from one PC to another. I can get the group and passwd files copied over using this awk -F":" ' $3 > 499 ' etc/passwd >> /etc/passwd awk -F":" ' $3 > 499 ' etc/group >> /etc/group But, how would I go about getting the shadow file copied over since it does not store the UID? Assume that there are over 1000 users, so doing a grep with the usernames, such as egrep '(bob|bill|sarah|sal):' etc/shadow >> /etc/shadow generating the usernames from the awk code above, would be a bit inefficient, but a possible option.

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  • Sorting tab delimited text file based on multiple columns in natural way [duplicate]

    - by Vignesh
    This question already has an answer here: Sorting a column of CSV file resulting in 1123 appearing before 232 1 answer I am trying to sort a file based on all two columns Eg: chr19 1070019 1070020 chr16 869712 869713 chr1 1378131 1378132 chr12 189386 189387 chr4 254941 254942 chr16 1476500 1476501 chr2 1476810 1476811 chr19 313283 313284 chr17 595817 595818 chr18 656897 656898 chr19 1061829 1061830 I Tried sort -t $\t -k1,1 2,2 <filename> but doesn't work. I want the output to be sorted by first column and second column based on first column. I want to do a natural sort. Not lexical sorting. Eg: chr1 1378131 1378132 chr2 1476810 1476811 chr4 254941 254942 chr12 189386 189387 chr16 869712 869713 chr16 1476500 1476501 chr17 595817 595818 chr18 656897 656898 chr19 313283 313284 chr19 1061829 1061830 chr19 1070019 1070020 Anyone any idea?

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  • Drawing on top of every windows on X11

    - by Vítor Baptista
    Hi, I am trying to make an arcade machine. The user will purchase credits, which will allow him to play for X minutes. I want to write "9:42 minutes left" at the left corner of the screen, even if he's playing a full screen game (UrbanTerror, for example). I would really like if I could do this with Ruby, but any other language is OK. Any ideas? Thanks in advance.

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