General :: Command Line - Recursive Rm With Condition?
Mar 13, 2011I have the following folder structure:
parent
- folder1
- main1.x
- main1.y
[Code].....
So, how can I achieve this?
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Programming :: Update A Line Using AWK With Condition?
Jun 18, 2010i have a host file called myhosts.txt as follow:
Quote:
10.20.3.9 host1
10.20.3.10 host2
10.20.3.11 host3
[code]...
In my script, i am using NSLOOKUP to get the ip address of a host that just rebooted and connected to my network (this part has been done).But now i want to check the myhosts.txt file if the host has the same or different IP address, if is different then myhosts.txt file must be updated with the new IP.i am using the following AWk command:
Quote:
awk '/host4/{$1=val}{print}' val=10.0.3.4 /tmp/myhosts.txt
it prints on screen fine and i see the host4's ip address gets replaced but the actual file does not get updated with the new IP. I might need to use gsub?
General :: Command Line Way To View A Line Of A File With Context?
Feb 24, 2011I'd like show a certain line or lines of a file with context, kind of like a unified diff, on the command line in Linux:
$ (something) -l 154 stuff.py
150: def foo(bar):
151: """
[code]....
General :: Printing Command Line History Without Line Numbers?
Aug 22, 2011How can I print Linux command line history without including the line numbers? I want to send it all to a text file like this:history >> history.txt
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May 29, 2010i've gotten my fedora 12 to the point where i can run python3 scripts from command line and can call up python 2.6.2 idle with the command 'idle' from command line. what command will call up python3 (3.1.2 to be exact) idle?
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Mar 26, 2011I know my way around MS Windows much better, but I just don't feel right trying to program something for Android on a Microsoft operating system. I am interested in Android programming so I followed the instructions on [URL] to install the environment on my computer...
I just installed the JDK, SDK, Eclipse successfully (or I assume):
* When I get to Step 4 where I'm supposed to run 'android' it will not run. I get the error message "android: command not found" (I am definitely in the right directory).
** When I double-click it in nautilus, it opens up in gedit. I can set the permissions in nautilus (through the properties - Allow executing file as a program) and get it to work,
My system:
Intel i7
Ubuntu 10.10 Maverick Meerkat
android-sdk-linux-x86
eclipse 3.6.2
General :: Access The Dbxml From The Command Line And It Returns Command Not Found?
Apr 30, 2011I installed the Berkeley DB on the Ubuntu server and tried to access the dbxml from the command line and it returns command not found
path/to/dir/dbxml-2.5.16/install/bin$dbxml
-bash" dbxml: command not found
Can someone point me in the right direction
General :: Write <Esc> In The Vim Command Line (:vim Command)?
Jun 24, 2011how do you write the ASCII character #27 in the vim command line?
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Mar 18, 2010I need to write an else-if condition in a makefile, and though the format is posted on several websites, nothing seem to be working, andI get an error everytime. Could anybody please write a small example with an else-if conditional in a maekefile?
View 1 Replies View RelatedGeneral :: Grep - Filtering Output By OR Condition
Aug 13, 2010Is there some way to filter output of command by OR condition in Linux? There is filtering by AND condition with grep in way like:
ls -l | grep "^a" | grep "z$"
That says: list all files that beggins with "a" AND ends with "z" (so there is shorter way to write this: grep "^a.*z$", but it is not matter). Is there some way to perform test by OR condition? For example: files that starts exactly with "xen" OR files that ends exactly with ".rpm". But exactly, not something like:
grep "[xen]{0,3}.*[.rpm]{0,4}"
General :: Put ELSE For Condition Block Of Procmailrc Recipes
May 2, 2011How can I have ELSE condition in procmailrc I mean if the mail was from X and Subject has Y OR .... DO something ELSE DO SOMETHING ELSE. I do not want to use two different conditions for each state I want use just one condition and its ELSE because putting too recipes in procmailrc make it too slow .
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May 28, 2011I am writing a simple shell script where it checks the condition using if condition.
Code:
if [ $name == "JOHN" ] then admin='YES'; fi
if I use like this I am getting below error
[code]....
General :: Use A Global Variable To Apply A Condition Within A Script
Feb 28, 2011I'm trying to use a global variable to apply a condition within a script.
The idea is to use this variable set to e.g. 1 or 2 to run a different part of the script accordingly. I can set the global variable with e.g.
Code:
export WL0=1
run my part of script, increment it by 1 with e.g.
Code:
WL0=$((WL0+1))
but if I re-run the script my WL0 is still set to 1!
I've also tried to add an
export $WL0 at the very end of my script (after the math) but this doesn't change the global variable apparently.
General :: Cannot Log In From Command Line
Apr 1, 2010trying to install the latest NVIDIA drivers:
I need to disable the X server to install it, which brings me to a blank screen prompting for a login before continuing. it reads thusly:
Ubuntu 9.10 chris-linux
chris-linux login: [i would assume i put in chris here...]
Password:[i type the password i use to login from the normal GUI screen, however i see no indication that im typing anything..]
Login incorrect
General :: How To Tell Which OS With Command Line
Jan 21, 2010Just want to know what OS is, Fedora/RH/... Tried the following on a redhat machine:
uname -o : GNU/Linux
less /proc/version:
Linux version 2.6.18-164.el5 (mockbuild@x86-002.build.bos.redhat.com)
(gcc version 4.1.2 20080704) (Red Hat 4.1.2-46)) #1 SMP Tue Aug 18 15:51:54 EDT 2009
What is the right command to do it?
General :: Corresponding Command Line Cmd For The UI Click?
May 21, 2010I can click the "movie player" from the GUI of Ubuntu, but how could I know the corresponding command line cmd. I want to run the movie player from commmand line. And this is not only about the background command for the movie player, I want to know all the actual command that was run by the x-window shell when I click on one of the icon on the menu.
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Jul 2, 2010I need to convert thousands of DDS images to PNG format in Linux, preferably in command line. Is there any program available for such task?
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Nov 17, 2010$ ls one.tar.gz
one.tar.gz
$ tar -xvfz one.tar.gz
tar: z: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
$ tar -xvzf one.tar.gz
one
$ tar -xzvf one.tar.gz
one
$ tar -zxvf one.tar.gz
one
$
General :: Put 'nix Box To Sleep From Command Line?
Dec 23, 2010What command(s) do I type in the terminal to put the computer to sleep?
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Apr 12, 2010I installed an older version of gdm and created a new XR1196 directory in /usr/bin and now my computer only boots into command line...
I can get to the GUI using startx, but in doing so I lose all audio output, and the option to shutdown or reboot from both CairoDock and the default panel...
General :: Trying To Use Run Level 3 Through Command Line
Mar 30, 2011I was trying to learn more about xorg configuration and came through an exercise that should be run at run level 3. So, I wrote init 3 in the command line then the x server stopped and the system was trying to enter run level 3 but then it hangs and nothing happens. At that time I was connected to the system via putty and wrote the command init 5 and the x server started again normally. I tried init 3 again and had the same thing.
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Apr 27, 2010How can I split a line in vim into 2. example :
original line :
welcome to linux questions
after splitting :
welcome to
linux questions
Is there a single key strike through which i can do it ? like going to the word "to" and striking that key will put rest of the words in new line. ( i want to do it in normal mode , not in the usual insert mode where it obviously can be done by typing <Enter> )
General :: Can't Launch GUI From Command Line
Feb 22, 2010I typed in sudo apt-get install ubuntu-desktop and it tells me it's already installed. Good. So it should work. I type sudo/etc/init.d/gdm start and the screen goes blank for 8 seconds three times in a row and then back to the command line. I have also tried gdm start without the path before and it says GDM already running. Aborting! I have 8.10 and it's a valid disk (no errors).
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Oct 13, 2010I'm trying to concatenate two command in one line.
Below are the commands:
Code:
I wanted to list all files in /portal/apll/nad/send and grep only .tmp files that contains credit card word.
General :: Start .pps In Command Line?
Jun 16, 2010i'm using ubuntu with the GUIi have a .pps (power point presentation) on the desktop. I installed the powerpoint viewer and made it the default program for opening the file.when i double click on the file everything works.my problem is i need this on a schedule so i downloaded scheduled task.in scheduled task they ask me the command line i want to execute and that's where it doesn't work. I checked the "allow executing file as program" box on the file but i get the error cannot execute binary file.
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Oct 18, 2010I really would like to learn all I can about using the command line. So if anyone knows of a good tutorial please let me know. I am running Ubuntu 10.10.
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Jul 20, 2010im installing gentoo on to my lappy and i have one problem if i do a command like help or something to that affect half of the commands dissapper so how do i scroll on it
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Dec 9, 2010I have a many text files that have XML tags all shoved into 1 line. I want to create a new file that splits each XML tag onto a new line. code...
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Jun 8, 2010Resolved before asked: cat /proc/1111/status | grep PPid
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Jul 5, 2010I'm working with Terminal (Mac OS X), but I think this is a built-in part of Linux. Sometimes, when I execute a command, Terminal returns a new, indented line with just -> on the line. It seems like it's waiting for something, but I don't know if it requires action on my part or not. Pressing enter simply returns another, identical line. When I Ctrl + C, it says Aborted, meaning something was clearly processing.
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