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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General :: Write Shell Script That Takes A File Path As Command-line Arguments?

Dec 14, 2010

How can i write a shell script that takes a file path as command-line arguments.and it should report whether the path denotes a file or a directory.

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General :: Replacement On More Than One Line In Text Files Using Shell

Nov 25, 2010

How can I replace one instance of a word in a text file with a piece of text that spreads several lines ? I know sed or awk is the way to go but don't know that how I can introduce new paragraphs using these tools

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General :: Starting A Command Line Interpreter When Using Gnome Desktop?

Mar 30, 2010

I'm studying Information Technology and doing Linux as part of it. One of the questions in my text book is: Describe three different ways to start a command line interpreter when using the Gnome desktop of openSUSE Linux. I can't for the life of me make sense out of it.

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Programming :: Write A Script StoredList That Takes Two Command Line Parameters?

Nov 28, 2010

This is the following exercise:Adapt this to write a script storedList that takes two command line parameters. The first parameter is the name of a directory, the second parameter is the name of a directory should be store i.e# ./storeList.sh /etc etcFilesListHow can you refer to the variables that represent the words passed in on the command line?

My Script's file:
#!/bin/bash
if test $# == 2

[code]...

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Programming :: Write A Command Line Script To Make Symbolic Links?

Oct 20, 2010

I am trying to figure something out as part of something else I am going to do. I was just wondering the easiest and quickest way to run a loop at the Linux command line which will make x amount of symbolic links when I need them.

I am using Debian 5.

I figure its something as easy as ~# foreach statement, then I just do a loop with the command to make a sym link.

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Programming :: Processing A Command Line Literally (without Shell Quoting)

Aug 31, 2010

Does anyone know a method of being able to process the complete and literal command line passed to a shell script ? I want to have the command line parameters with ALL characters (including meta characters e.g. $ literally).

So as if there was no shell to substitute or expand parameters nor applying it quoting rules.

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Programming :: Global Bash Shell Functions - A.sh: Line 2: Echotm: Command Not Found

Sep 13, 2010

I wonder if there is anyway to make a user-defined bash shell function global, meaning the function can be use in any bash shell scripts, interactively or not. This is what I attempted:

Code:

$ tail -n 3 /etc/bashrc
echotm () {
echo "[`date`] $@"
}

[code]....

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Programming :: Bash Shell Read User Argument From Command Line And Test It

Aug 29, 2010

Trying to create a small script that will read user's input, test if user entered some input and if not display some message or display a text using user's input.

The script is the following but i get an error saying "[: 6: =: argument expected"

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General :: Write <Esc> In The Vim Command Line (:vim Command)?

Jun 24, 2011

how do you write the ASCII character #27 in the vim command line?

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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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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 :: Shell Script File - Pass Multiple Parameters To Interpreter?

Feb 2, 2011

I have a Python script that I run which needs to execute under a special environment, so I would run the program like so from my working directory (~/project/src):

python manage.py shell

This opens up an interactive shell for me to start typing my own commands.I have another set of administrative activities that I would like to house in another directory (~/project/admin). The manage.py is really finicky about running from the working directory. So, to make this whole thing work, I made a script which starts off like so:

#!/usr/bin/python ../src/manage.py shell

There are a couple problems with this. The first is that it doesn't work:

/usr/bin/python: can't open file '"/../src/manage.py" shell': [Errno 2] No such file or directory

How do you specify multiple parameters to the interpreter?How do I change the working directory?

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Programming :: Bash Write To End Of Each Line?

Nov 29, 2010

i have a text file like

abc abc abc abc
abc abc abc abc
--- --- --- ---

i want to add a string xyz to end of each line..

abc abc abc abc xyz
abc abc abc abc xyz
abc abc abc abc xyz
--- --- --- --- xyz
--- --- --- --- xyz

how do i do this in bash?

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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 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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General :: Shell Scripting: Parse Parameters From Command Line?

Mar 12, 2010

myscript [-a a-arg] [-c c-arg] [-b] [-e] somedirectory

Given that I want my shell script be invoked at the command line using the above parameters - where [these brackets] denote that they are optional - what is the best method to parse them?

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General :: Shell - Connect From Command Line To FTP Server With Proxy?

Aug 15, 2011

I want to connect to an FTP server from the Linux command line. The server is configured behind a proxy.

If I call:

echo $ftp_proxy

I get a result like this:

abc.def.ghi.jkl:8080

If I call:

ftp -pn $ftp_proxy

I get a unknown host error.

How can I connect to the FTP server using the Linux command line?

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General :: Udp Tcp Command Line Tool For Shell Script Programing

Feb 8, 2011

I am looking for a powerful command line tool to send and receive data via socket I mean define IP , port and data other options for command to send and receive data from sender.(like a high level socket programming)

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General :: Load A GTK 2.x Theme With Command Line / Shell Script?

Jul 18, 2010

I would like to know how i can load a gtk theme with a terminal command line or with a shell script if possible.

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CentOS 5 :: Pass Shell As Command Line Argument When I Ssh To An Account

Jan 25, 2011

I want to have a choice or more preferable pass shell as command line argument when I ssh to an linux account.i.e. If John logs in to account "zzz" on server "abc", by default definition of account "zzz" n server "abc" he get csh.But Sally desires that when she logs in to account "zzz" on server "abc", she needs the login shell to be ksh,and Rick wants bash when he logs in to account "zzz" on server "abc".What is the most non-intrusive / easiest way to achieve this? Each user can set their preference on ssh command line or create a simple alias by each shell, but not sure how to do this.

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Programming :: Show The Output Of Shell Command Into A Textbox, Ex Ps -efc Command?

Oct 20, 2010

I am using gtk to program GUI. How can I show the output of shell command into a textbox, ex ps -efc command ?

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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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Ubuntu :: Command Line (write A Short Script That Will Compress A Specific Folder) - 7zip

Oct 6, 2010

i need to write a short script that will compress a specific folder that`s on the Desktop (and all it`s content) and also will encrypt it with a password that is inside the script --->meaning it wont ask for a password+verification when compressing+encrypting

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