Programming :: Write A Bash Script Program In System Command Terminal?
Mar 22, 2010
I'm trying to write a bash script program in the Linux command terminal that will write to a fellow user and then continue reading down the program. this is what i have (kind of explains the idea too):
#!/bin/sh
clear
echo "this is before the write command"
write jcummins
this message should go to jerry
echo "the message didn't send and this string will not appear"
echo "it appears it has stopped at the write command"
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May 24, 2010
I am trying to write a bash script to call from a terminal that will change the terminal title. I am using ubuntu 10.04. The script is meant to be used in the gnome-terminal.
Here is what I have:
Code: #! bin/bash
echo "New title: c"
read title
echo "33]0;$titl07c" -e
[Code]....
it doesn't work
I think the problem has to do with modifying PS1 inside the bash so i tried this:
Code: echo `export PS1="[e]1;u@h:wa]${debian_chroot:+($debian_chroot)}u@h:w$ "` and it still didn't work.
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May 15, 2011
I want to write a bash script that will launch a command when ever I plug my phone in. how would I monitor the port in a script.
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Apr 6, 2011
I'm trying to do something here:: I'm writing a bash script, I want to [open a new terminal and run a bash command in it] inside the script. I tried to use this, but apparently I get syntax errors.
Quote:
#! /bin/bash
echo "echo Something" > ~/Second.sh
chmod +x ~/Second.sh
xterm -e sh -c ./Second.sh
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Mar 1, 2011
I am having all sorts of trouble trying to assign a variable within an awk script with the system command. I know there is a lot of ways around this problem, but for efficiency reasons, I would like to, within my awk script, do something like
system(x=3)
or
system(x=NR)
and, latter on the shell script which calls the awk script, use the variable $x. But nothing is passed to x. I have already tried things like
command = "x=3"
system(command)
and also used a pipeline within the system to pipe it to /bin/sh In fact tried a lot of stuff like that, using $(( )) etc etc etc I can create directories e write to files (yes, i could write to a file and read from there, but I dont think it is efficient, plus I am puzzled).
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Nov 29, 2010
I create a bash script that writes another bash file. But in the generated bash file I want to write a bash command in the file and not executing it.Here's my bash file:
Code:
#!/bin/bash
cat > ~/generateGridmix2data.sh << END
[code]...
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Jun 30, 2011
I am trying to fix a perl script, and I really suck at perl. But I think this problem will be easy for people who know it.
The problem is, I have an old setup script someone wrote many years ago. It fails if the standard shell is dash and not bash. The only way I've gotten it to work is to point /bin/sh to bash. I looked thru the script and it uses "system" many places, and I think that's the problem.
I searched for it and found this link:url
My plan is to include this function:
Code:
sub system_bash {
my @args = ( "bash", "-c", shift );
system(@args);
}
Then I could simply change all calls to system into system_bash and it should work?
The parameter to the system calls is usually some variable. What if the parameter is a list already? Do I need to test for it somehow, and if it's a list, prepend "bash" and "-c" to the list? How do I do that?
In the script there are lots of places like this:
my $error = system($cmd);
if ($error) {
die/warn "some error message";
}
Shouldn't there be a return in the system_bash function?
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Jun 5, 2011
I got a problem with terminal, since i'm really a noob with terminal i don't know how to fix it.Everytime i type in a command it shows for example:
-bash: ls: command not found
Even the basic commands don't work... just cd <directory> and those things works
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Feb 15, 2011
I will have to code this. However I am lacking of time since I have too much to do. make a short code bash/dash to prompt the country with Zenity, then, get the PLS or m3u url and prompt with another zenity which radio to play. http://www.listenlive.eu/index.html
My code to get url's radio country.htm is:
Code:
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Apr 14, 2011
I've been looking for how to set this up in bash with no luck so far. I can change what file the history log is written to, and how much history is saved. But it only writes the saved part when bash exits. Instead, I'd like to have bash write that file continuously as each command is entered (and maybe also do an fsync(2) to flush it to disk). That way I can see the command I crashed the box with Anyone know the magical incantation for that?
But there appears to be nothing that I can find there, in the man page, or other searches, that suggest it even can do continuous.
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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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Feb 26, 2010
I want to write a program (in C), which does 4 or 6 simultaneous calculation. Is there away of doing something like:
do at the same time{
Core 1 do:
this_thing_1
[code]....
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Jun 3, 2010
I have been looking for a script example of reading and writing to the parallel port's data, status, and control registers using bash. I see it done in pascal, tcl, etc. but nothing in bash.
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Jun 26, 2011
I have the following problem. I call a C++ program from a Java servlet by using Runtime exec. The OS is ubuntu and I use Netbeans 7.0 with Glassfish 3.1 web server.The program executes but it does not open and write into a specified file in a specified folder. The same C++ program compiled under Windows opens and writes this file.How can I solve this problem in Linux?
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Mar 28, 2011
Im trying to write a program that interacts with MySql in C . Im using slackware 13.1 64 bit and Ive installed MySql , getting help from this page : [URL] .
This is the program I have ( I know they arent any vars here , i just thought it wasnt necessary )
Code:
#include <stdio.h>
#include <mysql/my_global.h>
#include <mysql/my_sys.h>
#include <mysql/mysql.h>
[Code]....
This program is from the MySql website ( a tutorial they have up there ). When I run this program I get hundreds of lines of errors , nothing related to my program , but the headers, indicating that there are syntax errors and all kinds of other problems in them.
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Dec 13, 2010
My company manufactures satellite TV receiveing equipment. Out current software is quite long and and a bit of an annoyance for customers. I would like the help of a programmer to create for us a customised, easy to use GUI, built to our specification.
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May 1, 2011
I have a kernel module program which is used to create a entry in the proc file system. I have to read and write values in the entry. Its taken from a online tutorial stuff.how to write the value to the proc entry in the program ?
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Sep 17, 2010
How can i write a simple c program in my RHEL5?I am more concerned about what are toosl i need to install to get a C platfrom running in my RHEL5?
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Mar 23, 2010
I am writing a code in bash script, in my ubuntu command terminal. The program should send the message, "Hello John!!" 5 times to john's terminal (assuming he is logged on to the server). But I keep getting this error: Syntax error: end of file unexpected (expecting "done").
#!/usr/bin/sh
clear
x=1 # this sets up the flag so we can have it send a limited amount
while [ $x -le 5 ]
do
write jdouglas << EFO
>Hello John!!
>EFO
x=$(( $x + 1 ))
done
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Sep 10, 2010
I open up 2 xterms on my desktop, A(/dev/pts/0) and B(/dev/pts/1).I can write from A to B using redirection e.g. echo "test" > /dev/pts/1How do I run a command from A on B? e.g. "clear"Basically I'm putting the 2 terminals side by side, and using terminal B to display the contents of the current working directory, by running the following in A:export PROMPT_COMMAND="ls -a > /dev/pts/1"but this fills up the screen pretty fast. I was actually looking for a way to clear up the second terminal.
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Dec 25, 2010
In my tmp directory some logs are creating continue (with name logs.txt1, logs.txt2 up to 245). Some times these logs are creating continue within 1 or 3 second gap, now I want to write a bash script that continue monitor the tmp directory and if any time logs create simultaneously within 1 or 3 section gap it will alert me..( generally logs are create with the gap of 5 or 10 minutes duration or some time after one hours )
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Feb 15, 2011
At the moment I got my md5sum checking working which I write to a text file and see below.
If the md5sum works it will write the output to check2.md5 test.txt: OK
If the md5sum fails it will write test.txt: FAILED
How do I write if statement to check the output whether or not the md5sum failed or not ?
check1="/home/ops/Desktop/test1/check1.md5"
check2="/home/ops/Desktop/test1/check2.md5"
cd /home/ops/Desktop/test1
md5sum test.txt > $check1
[Code]....
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Jan 20, 2011
I have a bash script that checks for contents in a folder every 15 seconds and then acts on it's contents. This works great for the average size file however on very large files it starts acting on the file before it's completely written. Is there a facility in bash shell to get a file complete signal or such? here is trigger to launch a larger script.
Code:
#!/bin/sh
while true
do
$HOME/bin/hpgl.sh >/dev/null 2>&1 &
[code].....
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Jun 23, 2010
I'm planing to write a bash script that will make some web stats reports and I'm stuck on beginning because I don't know how can I read a directory content, put everything in a variable, compare the variable value with current date and go further.More specific ...
I have /var/apache/log/. Here I have access logs on date ( like access.log.24.06.2010.gz and so on ).
How can I do to automatically zgrep (in a bash script) last day .gz ??
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Oct 6, 2010
I try to write a bash script that recognizes when the mouse moves.
like a screensaver.
But I want that while a browser window is opened and I move the mouse that a new webpage loads.
I can open opera with a console command but how can i recognize that the mouse moved?
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Jan 31, 2011
I have a folder of 2 many files that the old ls just hangs.
I am trying to write some log files such as;
I don't mind doing one at a time, but I am just playing and even getting the listing I am not getting the date stamp, I have the following;
That does create the file, but all the files look like this;
So basically it's just sticking that ls inside the log file and not actually running the ls, so how can I use the above type to get files just created per year?
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May 21, 2010
I want to design c program can run terminal command and put the output of command into file... How can i do this ? for example :
string s = " iwlist scan "
and when i run the programm this command applied and put the output into specific file
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Jun 9, 2010
I am using Ubuntu 9.04 linux 2.6.28-11-generic. When I write a program that gives the "Segmentation fault" error, or when I send this signal (SIGSEGV) to a program, the "Segmentation fault" is shown and no core dumped. When I look for "core" file in the current directory, I can't find it, too.
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Oct 8, 2010
I want to write a program in C which will generate a maze randomly and find the solution for it ..
The idea behind is in [url]
How the 16 bit integer is stored in a variable..Earlier I wrote a program on trees and displayed it using dotty.. Is there any such tool to display a maze..I am using ubuntu 10.04.
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Mar 11, 2009
write a C program to detect whether the Ethernet cable is plugged or unplugged. I found out by using a command "nm-tool" in Linux terminal will show me whether a Ethernet cable is plugged or not. If Ethernet cable is plugged, in the device part of eth0, the Hardware Link of Wired Settings will indicate a "yes" and "no" if no Ethernet cable. Hence, in my previous code, I use one function called popen to read the state as shown below:
PHP Code:
[code]....
However, now my project wish to not use the NetworkManager (where the "nm-tool" command comes from). And this gives me trouble to detect the Ethernet cable. So is there any other method for me to detect the Ethernet cable in C programming?
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