I'm looking for some good tools in the Ubuntu platform which does convert the PDF to CHM files. I googled a lot. But I almost finding the tools for other way around (i.e CHM to PDF).
I'm new to Ubuntu and trying to learn ssh connections. I learned trick to suspend the current SSH connection and come back to localhost using:
~ + Ctrl-Z
When I press Shift+~, I suppose that the ~ shouldn't be visible until I press Ctrl-Z(which makes my ssh connection to be suspended and come back to localhost).
However at times it works as expected i.e ~ is not visible until I press Ctrl-Z. But at times ~ is been visible at terminal once I press the Shift+~ keys, which makes the suspending ssh impossible!
Am I missing something here.
Thanks in advance.
I'm very new to Ubuntu. I did this :
sudo apt-get -f install
And when I rebooted the system, I couldn't log into the system.
When I proceed with the user name and password I get a small pop-up saying :
Failed to load session Gnome ( Log Out )
What went wrong? Are there any ways there to get back to my previous state?
Thanks in advance.
I'm very new to Ubuntu. I'm looking at the directory /usr/include it contains lot of header files. I know they have specified certain constants and other information that are used in Ubuntu. I'm confused with the use of it.
One of the directory inside is linux/byteorder. Which has two files:
big_endian.h little_endian.h
I wonder why two files are needed? My machine will be either big endian or little endian right? Didn't ubuntu while installation didn't pick my system byte order? Does /usr/include is just same for all machines? What is the exact use of it?
Thanks in advance.
I'm getting this error when ever I install any packages via apt-get:
hostname: Name or service not known
dpkg: error processing ssmtp (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up libt1-5 (5.1.2-3.4ubuntu1) ...
Setting up php5-gd (5.3.10-1ubuntu3.2) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
ssmtp
E: Sub-process /usr/bin/dpkg returned an error code (1)
Why this is happening?
I'm very new to Ubuntu. If I do this sort of command say:
cp file1 file2
The shell creates a child process and that child process will call cp, which in turn call exec system call of operating system.
Are there any command to visualize this process from my terminal?
I wonder why I get this error on my syslogs:
[7732763.396193] [UFW BLOCK] IN=eth0 OUT= MAC=02:8b:1a:75:d5:7b:02:8b:1a:40:00:03:08:00 SRC=x.x.x.x DST=x.x.x.x LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=53703 DF PROTO=TCP SPT=35651 DPT=8443 WINDOW=457 RES=0x00 ACK RST URGP=0
I have just enabled the ufw. This error means that something going wrong?
I use terminal for almost all tasks. Let's say I have entered a huge command like this:
sudo a-huge-command
What is the easiest way to delete the whole command with a single shortcut, rather than keep on hitting backspace key?
I'm a Ubuntu newbie looking to use Ubuntu in a professional way.
I'm very new to Ubuntu and I want to know: what is the exact use of /etc/hosts?
Lets say I'm adding this into it :
127.0.x.x mydomain
What does that mean?
I created a new user using useradd command.
I need the logs for it. Where it will be available.
Thanks in advance.
I have installed openvpn using the command :
sudo apt-get install openvpn
After installing it, when I tried to start it, I get:
* Reloading virtual private network daemon(s)...
* No VPN is running.
I'm very new to Ubuntu. I couldn't able to get what No VPN is running. meant. Does this mean any thing wrong in my installation?
I'm using 12.04 Ubuntu Version and since openvpn uses, tun/tap, I wonder its already installed in 12.04 versions?
Thanks in advance.
I'm very new to Ubuntu. I couldn't able to connect to mysql via my programming language.
I know all my property file in my code is correct. But still I couldn't able to connect to mysql. I guess my firewall is blocking me out.
I have ufw firewall installed, how do I enable 3306 port in that?
I tried these steps but doesn't get the solution.
Thanks in advance.
I'm reading the Unix Programming Environment book. I came across the od command. The command works for the file contents but not for the directories when I run it. However, this command seems to work on directories when demonstrated by the authors of the book.
When I run the following command :
od -c .
I get an error message that says :
od: .: read error: Is a directory
0000000
Why am I getting this error?
I tried mysql in my command line :
I get:
The program 'mysql' is currently not installed. You can install it by typing:
sudo apt-get install mysql-client-core-5.5
But when I do:
sudo apt-get install mysql-client-core-5.5
But I get:
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-client-core-5.5 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 47 not upgraded.
How should I proceed?
I installed MySQL using sudo apt-get. Now I need to remove it from my system.
How can I do that?
I'm very new to Ubuntu. I hear people say "shell scripting", "bash scripting".
I wonder are they same? Or they are different?
I'm very new to Ubuntu. I'm using Nagios Graph plugin. That plugin needs perl RRD module to be installed on my system.
How I can install that?
Thanks in advance.
I installed Nagios by following the steps here.
I wonder where will be config file are. I can see plenty of places files resides. For example I can see nagios.cfg in two places :
/usr/local/nagios/etc/nagios.cfg
and
/etc/nagios3
which I need to configure? And also there are two commands.cfg file :
/usr/local/nagios/etc/objects
and here :
/etc/nagios3/commands.cfg
I'm very much confused in configuring the files I need.
I have installed Nagios in my ec2 server. Now I want to install check_snmp plugin. I found that this is not available in :
/usr/local/nagios/libexec
I tried :
sudo apt-get install nagios-plugins-snmp
But I'm getting :
E: Unable to locate package nagios-plugins-snmp
How can I install the plugins?
Thanks in advance.
I tried to change the tcp timestamps in Ec2 instance (which is Ubuntu 12.04). I opened up the editor and changed the value 1 from 0. And when I tried to save the file I get this error:
/proc/sys/net/ipv4/tcp_timestamps" E667: Fsync failed
I'm very new to Ubuntu. Can anyone help me in this out?