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• UNIX pipes on C block on read

  - by Toni Cárdenas

  I'm struggling to implement a shell with pipelines for class. typedef struct { char** cmd; int in[2]; int out[2]; } cmdio; cmdio cmds[MAX_PIPE + 1]; Commands in the pipeline are read and stored in cmds. cmdio[i].in is the pair of file descriptors of the input pipe returned by pipe(). For the first command, which reads from terminal…

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• Run shell command from jar?

  - by phineas

  The usual way to call a shell command from java is something like that: Process process = Runtime.getRuntime().exec(command); and works usually fine. But now I've exported my project to an executable jar file and callig shell commands doesn't work any more. Are there any explanations, solutions or workarounds for this problem? phineas -- …

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• Multi-line code in PHP interactive shell

  - by Andrei

  I'm learning to use the PHP interactive shell, but I'm having trouble with multi-line code. Using backslashes like in the UNIX shells doesn't seem to work. What am I doing wrong ? php > function test(){\ php { echo "test";\ php { }\ php > test(); PHP Parse error: syntax error, unexpected T_ECHO, expecting T_STRING in php shell code on…

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• shell tool which renders web site including javascript

  - by drholzmichl

  Hi, we want to test our webpages on linux shell. For that reason I'm looking for a shell tool, which gets the html page from server (like 'wget') and then executes contained Javascript, include pictures and so on. After this, the tool should give me a 'screenshot' of the rendered page, so that I can create a checksum for that screen. (So I…

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• Automatically execute commands on launching python shell.

  - by thepandaatemyface

  Hi, I was wondering if there is a way to automatically run commands on entering the python shell as you would with the .bash_profile or .profile scripts with bash. I would like to automatically import some modules so I don't have to type the whole shebang everytime I hop into the shell. Thanks,

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• python script argument misinterpreted in Hudson Execute Shell step

  - by chz

  When I run my python script in the shell terminal, it works sudo myscript.py --version=22 --base=252 --hosts="{'hostA':[1],'hostB':[22]}" But when I run in Hudson and Jenkins, using Execute Shell step, somehow, the string --hosts="{'hostA':[1],'hostB':[22]}" is interpreted as sudo myscript.py --version=22 --base=252…

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• Shell script that iterates through a sql "delete" statement

  - by ming yeow

  I need a shell script that deletes 1000 rows from a massive database until it is done. It is very simple, but i am very weak in shell scripting, and the many tutorials online offer extremely similar, but different nuances in syntax

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• No gnome shell after install on ubuntu 12.04 inside VMWare workstation

  - by Wouter

  I created a virtual machine for ubuntu 12.04. I then installed GNOME3 from the software center, How do I install and use the latest version of GNOME Shell?. However after install I don't get the new gnome shell, in the terminal gnome-shell --version tells me that I'm using the latest version, 3.4.1. My interface now…

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• How do I disable the calendar events section in GNOME Shell's clock applet?

  - by Victor

  I'm running gnome-shell 3.2.0 and when I click the clock applet in the middle of the top panel, the following shows up: I have no need for the entire right part, right of the dotted line, which is dedicated to the "Online Accounts" integration with evolution's calendar. Is there a way to remove/disable it, so I can…

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• On Linux/Unix, does .tar.gz versus .zip matter?

  - by rwallace

  Cross-platform programs are sometimes distributed as .tar.gz for the Unix version and .zip for the Windows version. This makes sense when the contents of each must be different. If, however, the contents are going to be the same, it would be simpler to just have one download. Windows prefers .zip because that's the…

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• Is Cygwin the best Unix environment for Windows? [closed]

  - by nik

  Which Unix like environment do you prefer on Windows? I have found Cygwin to be very comfortable for a Windows platform (usually XP). I am wondering if there is a better alternative (not because I want to move away from Cygwin). What are the features of Cygwin that you like OR, What are features you find in…

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• On Linux/Unix, does .tar.gz versus .zip matter?

  - by rwallace

  Cross-platform programs are sometimes distributed as .tar.gz for the Unix version and .zip for the Windows version. This makes sense when the contents of each must be different. If, however, the contents are going to be the same, it would be simpler to just have one download. Windows prefers .zip because that's…

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• Unix substr in shell script?

  - by KnockKnockWhosThere

  I have a string like sample.txt.pgp and I want to return sample.txt in a shell script. Is there a substr function? Like, if I did substr('sample.txt.pgp', -4, 0), is it supposed to return sample.txt? Right now it isn't, so I'm wondering if I have the syntax wrong, or maybe substr isn't a function?

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• how to find Unix system call path in C

  - by charly

  i am doing a project about shell, and i want the code that gives me the path of the system call. example, when i enter the command type dir the reply will be dir is external command (/bin/dir)

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• Problems with making a simple UNIX shell

  - by Kodemax

  Hai, I am trying to create a simple shell in UNIX. I read a lot and found that everybody uses the strtok a lot. But i want to do without any special functions. So i wrote the code but i cant seem to get it to work. Can anybody point out what i am doing wrong here? void process(char**); int arg_count; char…

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• Shell script to emulate warnings-as-errors?

  - by talkaboutquality

  Some compilers let you set warnings as errors, so that you'll never leave any compiler warnings behind, because if you do, the code won't build. This is a Good Thing. Unfortunately, some compilers don't have a flag for warnings-as-errors. I need to write a shell script or wrapper that provides the feature. …

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• how to implement word count bash shell

  - by codemax

  hey guys. I am trying to write my own code for the word count in bash shell. I did usual way. But i wanna use pipe's output to count the word. So for eg the 1st command is cat and i am redirecting to a file called med. Now i have to use to 'dup2' function to count the words in that file. How can i write the …

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• wscript.shell running file with space in path with PHP

  - by ermac2014

  I was trying to use wscript.shell through COM objects with php to pass some cmd commands to cURL library (the DOS version). here is what I use to perform this task: function windExec($cmd,$mode=''){ // Setup the command to run from "run" $cmdline = "cmd /C $cmd"; // set-up the output and mode …

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• Trying to use a grails domain class from the shell

  - by ?????

  I'm new to Grails. I'm trying to experiement with my grails domains from the shell, and I can't get it to work. These domains work fine from the scaffold code when I run the app. Given this domain class class IncomingCall { String caller_id Date call_time int call_length static…

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• How to compile a C++ source code written for Linux/Unix on Windows Vista (code given)

  - by HTMZ

  I have a c++ source code that was written in linux/unix environment by some other author. It gives me errors when i compile it in windows vista environment. I am using Bloodshed Dev C++ v 4.9. please help. #include <iostream.h> #include <map> #include <vector> #include…

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• Extract history from Korn shell

  - by Luc

  I am not happy about the history file in binary format of the Korn shell. I like to "collect" some of my command lines, many of them actually, and for a long time. I'm talking about years. That doesn't seem easy in Korn because the history file is not plain text so I can't edit it, and a…

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• Run FFmpeg from Shell Script

  - by Abs

  Hello all, I have found a useful shell script that shows all files in a directory recursively. Where it prints the file name echo "$i"; #Display File name. I would instead like to run an ffmpeg command on non MP3 files, how can I do this? I have very limited knowledge of shell scripts…

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• Communicating between a parent and its children

  - by Betamoo

  Newbie question: On Unix, in a program with a parent and some children: - How can the parent alert the children efficiently to do some work.. ? - Or how can the children wait for parent signal to start doing some work? Thanks

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• Error when opening .tar.gz via Shell to install Apache Maven

  - by adamsquared

  Thank you in advance for the help. My Goal: To install apache maven per its websites instructions (http://maven.apache.org/download.html), in order to install the JUNG package according to its install instructions (http://sourceforge.net/apps/trac/jung/wiki/JUNGManual), so I can use…

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• Best way to choose a random file from a directory in a shell script

  - by jhs

  What is the best way to choose a random file from a directory in a shell script? Here is my solution in Bash but I would be very interested for a more portable (non-GNU) version for use on Unix proper. dir='some/directory' file=`/bin/ls -1 "$dir" | sort --random-sort | head -1`…

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