General :: Create A *one* Line Command That, Using Tar, Will Collect The Full /usr/local Directory?
Oct 6, 2010
I am currently interning at a place and my job is to essentially learn UNIX. My supervisor gives me problems here and there to help guide me with my learning but for the most part I'm doing this all by self-teaching myself. Needless to say I have run into a few obstacles...for instance-Create a *one* line command that, using tar, will collect the full /usr/local directory (you need to run this as root again) and copy the whole /usr/local structure under /optFor example /usr/local/bin/hello will become /opt/local/bin/hello, etc. I want this as follows:1. /usr/local is collected by tar, but the output of this tar command is its stdout.. what you get from the previous stdout, you compress with gzip and send it to stdout again 3. get this output and decompress with gzip.. get this output and pipe to tar in a way that will extract the tree under /opt.If anyone knows how I could go about doing this, please let me know, or at the very least point me in the right direction. What I've got so far (which could be completely wrong) is:tar cvf - usr/local/ | gzip -c - | gunzip -c - | tar xvf -in theory I feel like this should work (except for extracting the tree under /opt...i'm kinda stuck there)
Well, I am facing problem when doing lab questions.
I must use DLXLinux bundled in Bochs (bochs.sourceforge.net).
I am required to use the /usr/local directory.
In /usr directory, there is no directory named 'local' but there is one thing called 'local@'. So, when I try to use mkdir command to create 'local' directory in /usr , there are error "cannot make directory.....".
I am implementing a strategy to organize my data among the several machines I work with and thought that getting some ISO images out of it could be a good idea because that way data would be 'read only' thus allowing for easier synchronization.
At first I thought of using the "dd" command to create the ISO out of a directory, but it fails code... So, I have two questions:
Is the ISO 'format' capable of storing complex directory structures with long filenames (pretty much as any Linux filesystem does), or are there some inherent limitations?
Supposing the ISO format is not constrained, which command would allow me to create an ISO file out of a directory?
I'm working with a dual-boot laptop running Ubuntu 10.0/Windows 7 and a Debian 5 VPS while the OS's shouldn't have much impact on my question.
What I would like to do is create a html page that I can upload to my VPS which lists all of the files/folders on my local 2TB hard drive (Specifically media such as Movies, Music, TV Shows...). The media obviously will not reside on the server, but I would like to at least have a list which will allow me to select, for instance, a bands artist so that it redirects me to the albums in the directory below.
Ultimately, I'm looking for Open Directory Browsing without actually having the media on my server. I have been attempting to create something to this effect using lynx, however, I'm not sure if it can be done with this command or if it's even possible for that matter.
in the command line there's a button (tab) for autocompleting commands and I'm pretty sure linux has a button that prints the last directory I used/typed whatever?
I am struggling to learn the command line, and am stuck to the following In my directory ~/Music , I have many music archives , total about 0,8 Gbyte . Yet , changing to this directory ) and giving ls -dlh , I get
ioannis@ioannis-laptop:~/Music$ ls -ldh drwxr-xr-x 4 ioannis ioannis 4.0K 2011-03-04 14:55
So, only 4 k size and no info about the number of the files in the dir
How can I create multipart rar file in Linux using the official console rar client?RAR 3.90 Copyright (c) 1993-2009 Alexander Roshal 16 Aug 2009Shareware version Type RAR -? for helpI want a multipart rar with each part size being 150 MB.
I use putty to get to my RHEL 5.3 workstation from my Windows laptop.
Typically, if I want a new terminal on my windows 7 workstation from another terminal or mc, I have to type start and I will see a new terminal window running the default shell.
QUESTION : What is the equivalent command in RHEL 5.3 (and or solaris) to create a new terminal window from the command line ? I will be entering this command from the shell prompt or mc's command line.
In Windows, if I want to start another terminal and in that terminal, I want to run a program, I can do "start program.exe arg1 arg2". this will create a new terminal window and runs program.exe in that terminal window. I don't have to create a terminal and then in a separate step run the program. How can I do this in Linux ?
I can do:mkdir messages and then: touch messages/hello.txt Is there a command that will do both - create the directory if it doesn't exist, and then the empty file? Something like: touch -p messages/hello.txt
I work with a Debian Squeeze on my laptop and I have a 160GB external hard disk. My hard disk was formatted FAT32, but I decided to format it using ext2. I formatted it using fdisk from command line and everything went well. Unfortunately, when I mount my hard drive(which is auto-mounted from Debian) it has got root both as owner and group. Then I can't write to it because I have no permission to do that. Is there a setting to create an ext2 partition which has as owner the logged system user in order to have right permission every time.
I need to copy all subdirectories and files from one directory to another ever 5 minutes or so, with the old data automatically being overwritten with the new data. I'd also like this to run at startup. Is there any way this can be done? If so, what program would I need to schedule the automation and what is the command line I would need.
I am bulding my own image based on 2.6.32 kernel, I wish to add a guest user:
In a script thats invoked by the makefile, I use 'useradd' command & this updates the shadow, passwd files under /etc on the host, is it possible to tell the command to create the shadow / password under some other folder on the host? may be /tmp?
I am trying to make a java application run on a barebone computer connected to a tv screen trough hdmi. I want to make this run as light as possible so gnome probably is overkill. currently I'm running fluxbox but I would like to encapsulate video and some other gui stuff in the program and run it command line(trough startup script.) Another way to do this would be running it when fluxbox starts in full screen. But I really don't know how to do this or where to edit the startup script so I can run it. I'm using ubuntu 10.04 server edition and only installed jre, fluxbox, and of course ssh-server.
I need to execute evince from command line or from a shell script and open it directly in full screen, or start some program for presentation.
I mean:
$ evince (this opens evince) $ evince /dir1/dir2/file.toview (this opens evince and the file.toview but not in full screen) $ evince /dir1/dir2/file.toview 'in mode presentation'
I am trying to install tilp, a program for the link between a computer and a Texas Instruments calculator. I have downloaded all the packages to a local directory. I tried telling yum to install all the packages at the same time, though, the dependencies still fail to resolve (though they are all in the directory). I don't know if it would be safe to force install without the dependencies (even though I would install them later).
i have a server running on centos5, i have run vsftp and samba, and i need create a user through command line and set your default directory, i can do this through graphic interface, but i need do throug line command.
Need explanation from a FTP guide's reference of FTP's GLOB command. mget and mput are not meant to transfer entire directory subtrees of files. That can be done by transferring a tar(1) archive of the subtree (in binary mode). Then FTP does not transfer, even with mput, a directory of files to remote server? Does this quote suggest I can tar my files, upload them, then untar them on the remote server?
I am looking for a way to (via bash script) set a custom directory icon for a number of directories. All of these directories contain a "cover.jpg" image. I can accomplish this manually by right clicking the directory > select "Properties > click the directory icon button > select the "cover.jpg" image. I am just looking for the way to do this in the terminal to save time, as the music collection is quite large.
