Programming :: Run A Command On A Separate Terminal In A Bash Script?

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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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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Programming :: Make 2 Separate Arguments In 1 Bash Script?

Aug 31, 2010

This is what I have:

Code:
#!/bin/bash
#ascript.sh

[code]...

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Ubuntu :: Terminal Bash / -bash: Ls: Command Not Found

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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Programming :: BASH - Output Of Snmpget With Multiple OIDs Into Separate Variables

Jul 7, 2010

I have a problem with snmp answers being empty or having spaces.

What I already have:

#get all interface indexes (if you wonder - I'm working for a cable company and different cablemodems have different number and types of interfaces):

The problem is the physical address which is sometimes empty and the description which has spaces. So I'm doing 2 snmpgets which is slower than 1 snmpget (sometimes I have up to 18 interfaces).

I'm trying to explain it a bit simpler.

Interface 5 gives me back the following lines:

Ethernet CPE Interface

Now the first line should go into variable ifadm,
2nd line should go into variable ifoper,
3rd line should go into variable ifspeed,
4th line should go into variable iftype,
5th line (which is empty) should go into variable ifphys and finally
6th line (which has spaces) should go into variable ifdescr

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Programming :: Create A Separate Thread For Program Which Basically Polls Using The Read Command?

Sep 28, 2010

I'm trying to create a separate thread for my program which basically polls using the read command. However this new thread seems to block the main thread, anyone know why this could happen.

In main I call this function pthread_create(&mainEventThread, NULL, GenericEventThread, NULL);

which calls
/*New threads start function */
void *GenericEventThread()
{
short int i, nError = -1;

[Code]...

I've used pthread_self to check that a new thread is being created, so why is the while loop in one thread blocking the main thread from running, I haven't used the join function anywhere in my code.

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General :: [Bash] Send Command To Another Terminal?

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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Ubuntu :: Short Key To Command Histroy In Terminal Running Bash?

Jan 20, 2011

In windows command prompt, F8 key can cycle through your previously entered commands i.e say you enter "ping google.com" and then "pushd <dir>". Next when you type p and then press F8 brings pushd and next F8 brings ping command. You can then hit enter to execute the corresponding command i.e ping in this case.Is there anything similar in Ubuntu Terminal running bash? Very handy to get back previously entered commands.

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Programming :: Command Line Invocation Of Gnome-terminal To Run More Than One Command?

Feb 16, 2010

I am trying to learn how to pass more than a one-command startup for gnome-terminal.

I will give an example of what I'm trying to do here:

Code:
#! /bin/bash
#
#TODO write this for gnome and xterm
USAGE="
${0##*/} [-x] [-g]
code....

However, running with the -g option to invoke gnome-terminal, I get a "There was an error creating the child process for this terminal" error.

This same error occurs if the gnome-terminal line is changed to

Code:
gnome-terminal -e mcTerm

Is there any way to pass more than one command on to gnome-terminal? I have tried various single and double quoting senarios and in a final attempt, I abstracted to an exported function all to no avail. Perhaps even though gnome-term is better at many things than xterm, xterm trumps it in this instance.

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Programming :: Bash Script To Start Gnome Terminal?

Apr 8, 2010

I want to write a bash script which can open a new gnome-terminal window.
In that gnome-terminal window, it should goto a specific directory and edit a file using Vi Editor.

How is it possible to do that?

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Programming :: Write A Bash Script To Call From A Terminal?

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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Programming :: Referring To The Current Terminal In A Bash Script?

Dec 22, 2010

I've got some bash scripts that I'm testing which operate on different screen sessions under different usernames. In order to check the status of them, however, I have to attach the screen sessions to my current terminal.

I run into problems, though; I only allow SSH to my machine from one username; the others shouldn't need SSH access. So, I log in as one user, and su into whichever user I need. Without performing a chmod o+rw on the terminal before I su into a different user, screen complains that it can't reattach to my terminal, because the user trying to make it attach doesn't have the permissions to do so.

Seeing as I forget to do this a lot, I wanted to make a script that I'd run on log-in to do this for me. Unfortunately, I don't know if there's a bash variable that refers to the current terminal - I can't always guarantee that I'll be logging in to /dev/pts/0, especially if my internet connection gets cut and I leave a hanging terminal...

Is there a variable for that or a way to refer to it in a script? If not, how do I work around that?

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Programming :: Bash Command From PHP?

Jul 14, 2011

Distro: Centos 5, PHP 5I have done a bit research on running bash commands from php and there was little success. This is my relevant php script

<?php
echo exec('pwd');
?>

[code]...

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Programming :: Bash Ambiguous Redirect - Redirect One Command Output Which Will Be Treat As A Content Of File For Another Command?

Mar 9, 2011

I am trying to grep multiple numbers from file, grep does have the -f option for that.

Code: grep -f <`seq 500 520` /etc/passwd I know this could be done with

Code: for i in `seq 500 520`; do grep "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?

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Programming :: BASH: Get PID Of First Command In Pipe

Aug 11, 2010

I understand that $! is the PID of a command. For example:

Code: #!/bin/bash
myprogram &
echo "PID of myprogram is $!"

I'd like to send the output of "myprogram" to both console and to a log file using the "tee" command but I also want to store the PID of "myprogam". Something like this:

Code: #!/bin/bash
myprogram | tee ./logfile &
echo "PID of myprogram is $!"

The problem is that $! is now the PID of "tee" rather than the PID of "myprogram".

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Programming :: Using AWK Within Bash Command Via Xargs

Mar 24, 2011

I often want to extract some info using awk from a variable/filename while running other things using xargs and sh. Below is an example:
Code: ls -1 *.txt | xargs -i sh -c 'NEW=`echo $0 | awk -F'_' '{print $1}'`; echo $NEW' {}

In the above case I would like to grab just the first field from a filename (delimited by '_') from within an sh command. This is a simplified example, where normally I would be doing some further data processing with the sh command(s).

The error message that I get is:
Code: }`; echo $NEW: -c: line 0: unexpected EOF while looking for matching ``'
}`; echo $NEW: -c: line 1: syntax error: unexpected end of file.
I haven't been able to figure out how to escape the awk command properly.

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Programming :: Bash: Remote SSH Command Append To AWK?

Sep 29, 2010

I have the following command that works Code: ssh root{at}IPADDRESS 'vim-cmd vmsvc/power.getstate 64 | grep Powered | awk "{ print $2}"' Which outputs the following text:- Powered on I would like to Append some text so the output is:- Ubuntu Server: Powered on Every different variation that I have tried ends up in an unexpected token.

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Programming :: Using Bash Command To Execute Output Of Awk?

Mar 24, 2011

I am trying to process a column separated data file, with a few bash command. For example, I have

Code:

file1 aaaa yes
file2 aaaa no
file3 bbbb yes

Let say I want to create new file with the output of first column and do something else with the output of 3rd column. Of course there are many ways to process this data file, but I wish to know by using awk, how could I do it. I'm trying:

Code:

awk '{system("touch $1")}' datafile

but the shell command will not able to get the awk '$1' output. How do I get this done ? And for another question, if the data file contains the variable name of a shell variable, how could I make use of it during a awk output ? For example I have a datafile1:

Code:

server1 yes
server2 no

And in another server declaration data file, I got this datafile2:

Code:

server1=xxx1
server2=yyy1

And in my awk script, I want to achieve something like (the syntax is definitely wrong, just to demonstrate what I assume it will like):

[code]....

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Programming :: Invoke Java From Bash Terminal Via Shell Script Fails Under Mint Debian / Fix It?

Feb 16, 2011

I am running a Java application on the command line bash terminal under Mint Debian. I have JDK1.6.0_22 installed 64-bit, and the OS is 64-bit too. I have a few JAR files in the directory and a few native LWJGL libraries. When I run the application using the command line, all works fine.
Lets assume my directory where the files are is called /home/riz/MyGame. I change to that directory and this is the command I use code...

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Programming :: Command In Bash Script To Check If Tar Is Currupt Or Not?

Jan 20, 2011

As part of my script I need to compress a 50Gb file. but I need to check that the compressed is not corrupt if it is ok it will then send it over if not it will report an error.

cd /home/ops/Desktop/temp
tar czvf backup-"$(date +%d-%b-%y)".tgz /home/ops/Desktop/temp

I need some here to check the compress file then somelike if the file is

if
send the file
else
send an e-mail reporting a failure

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Programming :: Assigning Bash Variable With The System Command In Awk?

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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Programming :: Write A Bash Script That Will Launch A Command?

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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Programming :: Echoing A Command Line Within A Bash Script?

Jul 8, 2011

Bash 3.1.7

Suppose this bash script:

Code:
#!/bin/bash
ls foo

I would like the output to be

Code:
ls foo
foo

That is, the command is first echoed then executed. Is it possible to do this? Or is the only way to debug the script?

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Programming :: Organize Bash Script Output Of Which Is Like On Top Command

Sep 12, 2010

Is it possible to organize bash script output of which is like on top command i.e. monitoring every let's say 1 sec and old information would cleared?

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Programming :: Sed Bash Command - Not Print Backslash In Perl

Jul 11, 2010

This pretend to be a script for rename a lot of files automatically. So I put the list of files in an array named @lista. But, as you can see, at the end of the command I use a sed filter to print out a backslash for those files that have spaces in their names, so the path for those files could be rightly interpreted.

But there's no way I could print a backslash. It works well when I use the Perl's sed substitution s///, but I need every path in the array to be fixed.

I'd like to add that the bash command works perfectly well alone. I mean outside the Perl script.

This is de command line with the sed filter:

Code:

And this is what it brings:

Code:

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Programming :: Using The Process Status (ps) Command In A Bash Script?

May 27, 2009

I am new to scripting and been working on this bash script for awhile now. I been researching this problem, but I can't seem to find a solution. I was wondering if someone could please help me out. Here is my script:

#!/bin/bash
NO="ps -ef | grep NO | grep -v grep"
NOWC=`ps -ef | grep NO | grep -v grep | wc -l`

[code].....

I cannot get this script to run the "ps -ef" command on the client. It get its value from the host machine that I am running this script from. I need this command to execute on the client. When I run the command (ps -ef | grep NO | grep -v grep) on the client, I get something back. Here is what I get when I try to debug the script.

XX# ./test_ps5.sh XXXXX
+ NO='ps -ef | grep NO | grep -v grep'
++ ps -ef

[code]....

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Debian Programming :: Command Followed By And Still Closes With Terminal?

Jan 4, 2014

Running debian wheezy. I noticed recently, whenever I fork a process using "&" from a terminal, such as

Code: Select allleafpad &

it starts up, shows the processid in the terminal, but every time when I close the terminal, leafpad gets killed. However, I create a simple bash script,

Code: Select all#!/bin/bash
leafpad&
exit

The script launches leafpad, then exits out leaving leafpad running, as it should. Is what I mentioned above normal? I'm confused, because I think I used to be able to do this in terminal without it depending on the terminal to stay running.

I guess I'm remembering wrong. As it turns out, commands begun on terminal get closed with terminal unless, as mentioned, you use nohup or start subshell. Process hierarchy and tracking etc.

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Programming :: Launching A Terminal Command With A Qt Button?

Feb 9, 2010

I've created a QT interface with some buttons and labels, and i want to launch a terminal command with one of these buttons,but the command maust starts with "sudo",unfortunately it didn't work because it wants root password and i can't enter it even in the Button cammand....

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Programming :: Running Command In Existing Terminal?

Aug 17, 2010

Here's my linuxquestion I have a bash terminal window opened by next command:

Quote:

gnome-terminal -x bash -c "bash"

Now i need to run different commands or scripts AS ROOT in this terminal window from another terminal. I tried things like

Quote:

sudo echo 123 >/dev/pts/4

The result is 123 in that terminal window, but sudo password is asked in my tab where i entered the command.

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Programming :: Bash Command To Remove All Files Within A Specific Folder?

Oct 19, 2010

I want to delete all files within a specific folder without actually deleting the folder, what is a good bash command for this?. I found this one but encountered some errors even though I am executing it within the specific folder:

useratdebian:/home/user/folder# find . -type f -exec rm -rf {} ;
[1] 5052
useratdebian:/home/user/folder# find: missing argument to `-exec'
[1]+ Exit 1 find . -type f -exec rm -rf

The command as it appears is:

find . -type f -exec rm -rf {} ;

how to delete only the files contained within the folder called "folder" for example?

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