The Write Command

HI,

I am a newbie to Linux and am trying to create a pipe file with the below command:

mkfifo pone

Now I am trying to write data to the file with the following command on the command prompt:

echo asdadsasdasdasdasdasd >./pone

But after i enter this command- the screen hangs up and doesnt proceed ahead.
Same thing happened when I tried writing using:
gedit pone


Can anyone help me resolve this issue?

I tried adding two users in apache group and given 775 permission to Document root but user is not able to write into files in DocumentRoot

Tried adding user and DocumentRoot Folder in sudo file but not able to do it recursively

please help


Thanks for reply,
I have already given chmod 775 -R DocumentRoot - for recursively writting permission
You have told to add user in www-data group and chmod 775 -R to DocumentRoot
usermod -a -G www-data <user1>

How can users in www-data can able to write in DocumentRoot which has apache:apache owner and group
please clarify...

Done below steps to solve this:
1) I have created a new group webdata and added required users in this group
2) set sticky bit to document root with below command
setfacl -m g:webdata:rwx -R /path/to/documentroot/
this command will set rwx permission to DocumentRoot so that members in webdata can have full access but still DocumentRoot user and group will be apache

I want to write a Python script. In order to write it I need to figure out how to access the values associated with my signal level and bit rate.

If I use the following command

Code:

iwconfig | grep 'Signal level'

I get:

eth0 no wireless extensions.

lo no wireless extensions.

Link Quality=70/70 Signal level= -38 dBm


Obviously, I don't want Signal level. I want whatever it happens to be. In this case, it happens to be -38. Ditto Bit Rate...How do I grab -38 from the command line?

Hello.
How can I write an Script that enter my password for "sudo" command automatically?
for example, I want to run a command that need root permission and when I write it in a bash script, it ask me "sudo" password for user but how can I automate it?
Can it possible for other program like logging via SSH too?

Thank you.

I want to write a bash shell script to execute a command for one minute then stop that command (ctrl c) pause for 10 seconds then run another command for one minute then stop that command pause for 10 seconds then go back to the begining of the script and loop indefinetly.

First I want to run this command for one minute;

reaver -i mon0 -c 6 -b "mac address" -a -vv

stop previous command and pause for 10 seconds

Then run this command for one minute;

airodump-ng -i mon0

stop previous command and pause for 10 seconds

Then recall reaver command and continue to loop through until reaver spits out result.

I imagine I will need to create a function for each command, an if statement and an ifelse statement and I will need the break and sleep commands. but I am not sure about the syntax, PLEASE HELP THIS NOOB!

I have an external disk but I can only write to it using sudo, not as my normal user.

The commands I've issued a
Code:

sudo mkdir /media/USBSSD
sudo mount -t auto /dev/sda1 /media/USBSSD
sudo chmod 777 /media/USBSSD
sudo mkdir /media/USBSSD/share

How can I set it up so that other users can write to it?

Please tell me for shell script..
I m writing the script.
In that script i written the 1 function and in that function i have to write the contents in existing file
so i write,
cat > /etc/puppet/manifests/init.pp
{
ensure => present,
}
.
But it caanot write the changes in ssh machine
so what i can do in my script?
Please help me...

I am reading a gnuplot pdf FAQ. In section 3.13 it says: "This requires you to write contours into a temporary file using the table terminal." Then I google and all I get is terminal-table. It says: install terminal-table by applying this command:

Quote:
$ sudo gem install terminal-table
What is it all about? What is a table terminal? What is a terminal-table? It looks like terminal table is to print tables in a terminal, right?

Thanks, - A.

I am working on LAR protocol, ns2 version = 2.32
OS = ubuntu 12.04

i successfully installed LAR NS on my system . but nam does not qork with ns-2.32 . so i tried to install with the following command

sudo make install nam ===> it successfully installed namv1.15 . but when i run box.tcl it is giving me the following error

SORTING LISTS ...DONE!
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 220.0
Segmentation fault (core dumped)

then i tried to remove the nam with this command sudo apt-get remove nam ==> removed
then i installed this nam from (nam_1.14_amd64.deb) . when i write nam it shows me network animator window v1.14 but segmentataion fault error remains the same .

I also tried to install nam-1.14.i586.tar.gz , first untar it and then the following command sudo cp nam /usr/local/bin but still the error .
i also tried with nam-1.14-x86_64.tar.gz but still no success.

if i dont use nam , then my box file runs successfully.
plz suggest me how to rectify this error.

I am not sure how to ask this, sorry.

if I had a code like this

Code:

# grep -a ": " md5list.txt | cut -f2,3 -d

How can I run the command basename for each line of the output?

basename {(grep -a ": " md5list.txt | cut -f2,3 -d )}


EDIT: A little more clarity on what im doing:
I didn't realize that 'md5sums' was a link to a nice formatted page. So I copied all packages here and put them into a text file. I decided to write a script that put all of these in that format.

So basically, even though I have already ran the md5sum -c 'md5sum-list' I still want to finish this small project because I am learning a ton.