Navigation Issue

I am confused with the navigation in linux.

what does navigation /../demo will mean ?

does it mean we go to / first , then which path ?


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Navigation On KDE

I feel very stupid, 20 years ago I was a Unix 5 system admin at a Xerox plant using Sun systems and then Database admin at American Airline for Dec and HP versions of Unix. I have just brought up PCLinuxOS running from the DVD on a laptop and I could not even figure out how to shut down the system without tuning off the power. Any ideas of a good guide?

GloMoSim Installation In Linux Problem

hi everybody
I'm trying to install glomosim in fedora linux
I was following the guide to glomosim steps and I faced a problem in this step:

<< Now, you have to change some environmental parameters according to the destination folder which you put the Parsec.
You can create a file called “.bashrc” inside the root or home folder (if it does not already exist), and include the
following:
export PCC_DIRECTORY=/home/parsec
PATH=$PATH:$PCC_DIRECTORY/bin
export PATH
*Your PCC_DIRECTORY should be set to the targeted destination folder which you created earlier.
Now, type:
$ pcc >>

every time I tried to type pcc
this message appears : bash: pcc: command not found
anybody help me with this please

Linux USB Port As A 'flash Disk'

Hey All,

Is there a way to present a path or other block device to a USB port on a Linux server then have that port connected to a USB port of another device (ie USB to USB) and have it look like a flash disk?

I can plug a USB flash disk to a router just fine. But if I wanted a device to access a path off of another device int he absence of NFS or CIFS capability, that would be handy.

In other words, anyway to assign storage to a USB port in Linux? It would be akin to something like SAN with a target and source just with USB.

Cheers,
DH

What Exactly Is PATH

books say that PATH variable contains the locations where the shell searches the commands to execute them.

I created a shell script and saved it in /home/user/Downloads directory and then i ran this script from the /home/user/Downloads directory. It did not execute.

however when i did set the path
export PATH=$PATH:/bin/sh within /home/user/Downloads directory, the shell script executed. Does it not mean that PATH variable is holding the locations of the shell program rather than the commands that are to be executed?

everytime i have to give the location of the shell i.e /bin/sh in the PATH variable no matter from where i am executing my script

Is There A Way To Have A Script Called Source, That Can Be Run Without The Full Path?

Is there a way to have a script called source, that can be run without the full path?

Ex:
When I run:
export PATH=/home/user:$PATH
source

I get:
Code:
$ source
bash: source: filename argument required
source: usage: source filename [arguments]

However I want it to run my script called source:
Code:
$ cat source 
#!/bin/bash
echo "Hello World"

Is there way to override a shell builtin in the PATH var or some other way?

Error:cannot Retrieve Repository Metadata (repomd.xml) For Repository: Fedora

Hi.
I am completely new in Linux and I'm trying to learn as much as I can while doing my job.

I am following directions from a wi-fi card vendor. In it, they require to download Fedora 13 to the laptop, which I have already done so. uname -a displays:
Linux localhost.localdomain 2.6.33.3-85.fc13.i868.PAE #1.

The directions ask to update the kernel with "yum install kernel-PAE". While connected to the internet, when I type that, the following error comes up:
Loaded plugin : presto, refresh-packagekit
Error: cannot retrieve repository metadata (repomd.xml) for repository: fedora
Please verify its path and try again

What does it mean and what file do I need to update with the right path? Please, let me know what other information you need.
Thank you very much

How To Map A Device With VID/PID With Mounted Path /dev/sdx?

Hi,
I have developed a tool where the update logic happens through libusb. In the case of libusb, we perform the corresponding operations after opening the respective device with VID/PID. Now one of the requirement states that even user specifies the mounted path (eg: /dev/sda), the tool performs the operation to a different device(eg:/dev/sdb) where the VID/PID matches with my tool logic. Can anyone please suggest how to map the VID/PID with the mounted path. Thanks in advance.

Linux Purchase On Amazon, Loaded 3 Disc,s Wont Advance To Upgrade, From 8.2 To 11.4

amazon purchase,8.2 linux os will not advance to upgrade from 8.2 to latest software upgrade, will not allow a donation,can only do a google search,on gnome. this is on a compaq desktop pro 3 intell processor, 80 gig hard drive, direct eithernet connection. being a newbe to linux ???? very confused, what do i have to do to upgrade to the latest linux upgrade os system. thanks, bigmoose

How To Convert Iso File To Burn To USB (don't Even Know How To Mount)

I'm a total total noob who is trying to download Linux Mint on a Mac OS X using a USB drive. I know there is some way to go into terminal and convert the iso file but I don't know how.

Here's the things I have tried so far: 1. sudo dd bs=4M if=[linuxmint-17.1-cinnamon-64bit.iso] of=/dev/disk2s1 (result: dd: bs: illegal numeric value)

~/path/to/Users/[my name]/linuxmint-17.1-cinnamon-64bit.img ~/path/to/Users/[my name]/linuxmint-17.1-cinnamon-64bit.iso -bash: /Users/[my name]/path/to/Users/[my name]/linuxmint-17.1-cinnamon-64bit.img (result: No such file or directory)
Maybe for #1 the "/dev/disk2s1" part is wrong? How do I find the number for the USB that goes after "dev/sd"? (I can only find "dev/disk2s1").

I have also tried to just mount/unmount the USB and drag the iso file into source/destination, to no avail.

Thanks so much!

Not Able To Connect To Internet Via 3G Router From Linux

Hello, My issue is very common but, not able to resolve it.

Issue I am facing with my Linux (RHEL-5 32-bit) machine, where I am not able to connect to internet.

DWR-113 - D-Link Router is configured for 3G dongle (Vodafone India) - This setup is done via WiFi and not using the provided LAN cable from Win7 machine.

Internet is working absolutely fine in case of Wireless but, at same time when LAN cable is used internet is not working. [Able to ping to Router IP i.e. 192.168.0.1)

Similarly, from Linux box, ping to Router IP is working [LAN plugged] but, Internet not working. IP of linux machine: 192.168.0.60

Also, able to get the console connection of Linux from Windows box..[Windows connected to Router via WiFi and Linux connected to Router via LAN cable]

Please suggest how to get rid of this problem so that Internet will work on Linux via LAN cable.

Many Thanks,