Programming :: Write A Function In A Shell Script?

Sep 22, 2010

I need a help regarding writing a function in a shell, what exactly a function does!!

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General :: Write A Shell Script Instead Of Shell Function?

Apr 27, 2011

I would like know when it is necessary or advisable to write a shell script instead of shell function ?

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Programming :: How To Write / Use Function

May 30, 2010

Can you offer me the code about fmod() in C. I want to know how this function work, i am very interested in it because i have no idea to implement it, i want to know... how to write the function... not 'how to use the function' can anyone post the source codes of this function here?

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Programming :: Write A Function That Shall Execute Periodic?

Sep 1, 2010

I want to write a function that shall execute periodic. means if i set time 1 sec that function should execute in each 1 sec. let us call that function func1. But i dnt want to wait inside the func1 for that 1 sec. Meanwhile i want to run another function say func2 in background . some thing like less priority function. Whnever the time come to execute the periodic function func1 it has to go to func1 and then again in the waiting time , the second function func2 will resume. I wanted to know how to do it.. Can somebody tell me is it possible using signal in linux.

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Programming :: How To Use A Function Inside A Shell

Apr 28, 2011

I am very new to shell script, and my requirement is --

1. open the apache access log, use "cut" and "grep" to find the numbers.
2.put the result in a file
3.then compare the same result with day before result
4. send the result via e-mail.

so how can i do that , using some functions..

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Programming :: Scenario For Call Shell Function From Mysql?

Apr 18, 2011

I am trying a scenario for calling a shell script when ever a trigger is called. Can some one guide me how to achieve this scenario. Also it should passes the value from the table to the shell script. Can some one explain me along with the example.

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Programming :: CGI Shell Scripting : Possible To Call Function From Other Script?

Mar 15, 2011

I got two cgi shell scripting files. Is it possible when i am in file 1, to call a function from file 2?

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Programming :: Write A Function That Counts The Number Of Occurrences Of A Pair Of Letters In A String?

Sep 9, 2010

Some help with this problem:Code:Write a function that counts the number of occurrences of a pair of letters in a string

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Programming :: Write Some Code That Involves Creating A Function To Return A Vector Iterator?

Jan 21, 2011

I'm trying to write some code that involves creating a function to return a vector iterator.I'm not sure what is wrong.

Code:
template <typename T> class VectorTemplate
{

[code]....

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Programming :: How To Write A Toy Shell

Mar 24, 2011

I'm trying to write a toy linux shell. For starters this is what I'm trying to do:

1. Start a new process with fork.

2. Execute a program in the new process with execl().

3. Redirect the output from the new process from STDOUT to another file descriptor, using dup2(2).

4. In the parent process, read the output from the child process and write it to the screen.

Creating a new process and executing a program in it is no problems, the problem is that I can't seem to capture the output from it in the parent process.

Code:

//digenv
//C++arl 2011-03-24
#include <stdio.h>
#include <sys/types.h>

[code]...

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Programming :: How To Write Own Shell In Unix

Sep 16, 2010

I wish to create my own shell for my operating systems project in college...

My professor has asked me to make sure that my shell can execute at least 30 or 40 commands... I have around a month's time

I have seen endless source codes in the net, I'm not able to understand any of it

How do i get about doing it?

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General :: Write Script To Use Function And Still Keep Function Active?

Feb 21, 2010

the function terminates if no key is pressed for 10 consecutive seconds. I tried using the -t option as suggested in some forums, but my version of showkey doesn't have the option of changing the timeout. The options I get are:

-h --helpdisplay this help text
-a --asciidisplay the decimal/octal/hex values of the keys
-s --scancodesdisplay only the raw scan-codes
-k --keycodesdisplay only the interpreted keycodes (default).

Is it possible to write a script to use this function and still keep the function active until an interrupt is recieved?

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Programming :: Write Shell Script To Ssh Into A Remote Computer And Run That?

Jun 26, 2010

How do i write a shell script to ssh into a remote server with password and run a script in it?

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Programming :: Write Shell Script For Copy Files?

Mar 25, 2010

write shell script for copy files to usbdąsk that cosist of very long argument like "2009025_efkl".

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Programming :: Write A Shell Script To Set Security Policies?

Apr 13, 2011

I don't know how to write a shell script to set security policies for Linux to start. and how. I know that there are many security policies for Linux but do not know which one best suited to write a shell script.

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Programming :: Write Shell Script So That It Can Run As Service / Daemon

Mar 8, 2010

Am not sure of the best way to go about writing a script. All I need at the moment is to start a java http server program at startup.How should I write languagetool.sh so as to be able to stop the script execution?

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Programming :: Write A Shell Script Which Edits A Config File ?

Mar 1, 2011

Write some simple script?

Heres what Im trying to do:

-Qjackctl has a config file which is modified each time QjackCtl is shut down. This means that whatever preset is in use when QjackCtl closes is written into the QjackCtl config file as the DEFAULT PRESET, for the next time QjackCtl starts (or at least this is how I understand it).

-I want to edit a specific line in the QjackCtl.config file, which specifies the DEFAULT PRESET. Obviously its easy to do manually, but I want to do it using a shell script which runs automatically on StartUp so that QjackCtl starts every time with the same DEFAULT PRESET, NOT the last one used.

-Unfortunately Im not at my Linux system right now (which is KXStudio/Kubuntu), but I believe the QjackCtl.config line looks something like this: DEF_PRESET=alsa (where alsa is the name of the preset)

PRESET1=alsa
PRESET2=firewire

I want a shell script which changes the line DEF_PRESET=alsa to DEF_PRESET=alsa, even when it may currently exist as DEF_PRESET=firewire due to occasions when firewire was the active preset when Qjackctl was last closed. I notice that the application in KDE that enables the user to set which applications open automatically on StartUp also allows the user to select shell scripts.

Ive done some research, as a beginner, and Im led to believe I might need to use AWK and/or CHMOD. I could have a go at writing a shell script but Im always wary about experimenting with StartUp scripts/operations because obviously if I get it wrong and make my system unusable, then because its going to run first thing on each boot, Id have great difficulty disabling it.

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Programming :: Write A Replacement For Shell Command Line Interpreter?

Sep 2, 2010

If say, I want to read the input given by user at the command prompt and write a code to execute the cmd given then which commands do i use to implement this ( Im writing the code in C )?

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Programming :: Write A Shell Script Which Will Check A File Name In A Dir And Copy It?

Apr 2, 2010

I am a novice to the shell script. In my system from db server the log files are enerating with the name log1.txt,log2.txt..... It is capable of keeping 10 files at a time in dir called /db/sis/log1.txt. I want to copy the log1.txt to another directory when ever it generating by attaching the time stamp to it for the back-up purpose. this files will be there for a period of 24 hours. after that the back-up dir should be cleared and it start copying again the fresh file from the same dir.

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Programming :: Find / Write A Shell Script That Will Go Through A File Organized?

Jul 3, 2009

I am trying to find / write a shell script that will go through a file organized like this (but with thousands of lines)...

93,5.00,"contig00002",169,83,"jgi|Brafl1|100379|fgenesh2_pg.scaffold_359000019"
579,1.00,"contig00003",3,380,"jgi|Brafl1|114745|estExt_fgenesh2_pm.C_1200006"
450,5.00,"contig00007",2,352,"jgi|Brafl1|274326|estExt_GenewiseH_1.C_8420008"

...and check the region of each line between the second and third pipes (the 6-digit numbers) against the values in the first column of a separate text file in CSV format like this...

274326,"Wnt family of developmental regulators"
114745,"FOG: Hormone receptors"
100379,"Transcription factor tinman/NKX2-3, contains HOX domain"

...and when they match, replace the value to the right of the third pipe (e.g., fgenesh2_pg.sca...) with the value in the second column in the CSV file associated with that number.

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Programming :: Write A Shell Script For Submitting Multiple Jobs Sequentially

May 27, 2010

I want to write a shell script for submitting multiple jobs sequentially. For example,

#!/bin/bash
qsub job1.sh

# when job1.sh is done, run the next one

qsub job2.sh

how to make the shell script know that job1.sh is done and now I can run job2.sh?

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General :: Write A Shell Script Which Will Simultaneously Collect OS User Information And Write In An Individual Text Files?

Feb 17, 2010

I want to write a shell script which will simultaneously collect OS user information and write in an individual text files.Can anyone tell me the syntax of the script.N.B. The user name will be mentioned in an array within the shell script.

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Programming :: How Can A Friend Function Access A Public Function From A Base Class

Nov 16, 2010

Code:
#include <iostream>
using namespace std;

[code]...

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Programming :: Passing Data From Interrupt Handler Function To Tasklet Function?

May 18, 2010

I am doing some Linux kernel programming for my research project. I need to record the timestamp (by using cpuid and rdtsc) when an interrupt handler (top half) is first invoked. Due to the time critical nature of the problem itself, I have to do the timestamping inside the interrupt handler itself (the first operation when the handler is called). However, I understand that tasks that are not so time critical should be deferred to a tasklet function (bottom half) for processing because other interrupts are disabled in a (top-half) interrupt handler. I am currently out of idea on how I can pass the timestamp information that I have obtained in the interrupt handler to the corresponding tasklet function.

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Programming :: Write Shell Script That Adds An Extension ".new" To All The Files In A Direct?

May 28, 2010

How to Write a small shell script that adds an extension ".new" to all the files in a directory.

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Programming :: Declaring A Function In A Function - C Programming

May 24, 2010

I want to declare a function in a function, but had no success till now, see the error code below and visit the project at sourceforge

[Code]...

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Programming :: Bash Array Add Function Example Using Indirect Array Reference As Function Argument?

Jun 20, 2010

I looked on the net for such function or example and didin't find anything, thus after having made one i guess it would be legitimate to drop it to see what others thinks of it.

#!/bin/bash
addelementtoarray()
{
local arrayname=$1

[code]....

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General :: Write A Telnet Server Without Username/password Function

Sep 24, 2010

i am trying to write a telnet server without username/password function. how to implement such function? the source code from inetutils seems complicated..

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Software :: In Platform \ Use Ioctl Function To Read/write Data To Hid Device?

Jun 24, 2011

Now i have a problem.I want to used a hid usb device under linux 2.6.11.But i can't know how to used ioctl function to send and receive data to a hid device

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General :: Invoke A Function In Bash Shell Script?

Apr 24, 2010

I just wonder the distinction calling the function between $(one_function) and one_function in bash shell script.

When I set the variable PS1 in ~/.bashrc, I can't invoke the function by one_func
ex:

export PS1="
[e[31m] $(one_func) # it works
export PS1="
[e[31m] one_func # it doesn't work

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