want to watch the file continoulsy for any newly written data to file.Presently i am periodically opening the file and checking for the newly updated contents.Is there something like refresing the file descriptor, since open is a system call, calling it many times may affect performance. Does the tail program opens file multiple times to check for the updated contents when used with -f option.Can some one explain or give some links on how the filedescriptors remembers its end contents while some other programs keeps updating the file.
Now I want to append contents list2.cfg to list1.cfg(It ispposible using cat list2.cfg >>list1.cfg) but I want to check if content of (record) in list2.cfg is present in list1.cfg then dont append it otherwise append it.
A long time ago I wrote a short essay about the 'federal' 'reserve' board. I don't remember it's name or format. I think it's somewhere on my rather large hard discs (to of them divided into various partitions).I'm trying to write a command line that will find it based on a quote that is in it: "our fathers brought forth"I have tried various configurations of grep, and or combining grep with find, but I'm getting nowhere. I really don't understand the syntax of either command, or how they work together, and the examples that I can find are really no help at all.
I am trying to read the contents of a file into something else. I have a file.txt that I am working with, I want to read the file and take the data and run some commands with the data that it read. So if it read www.yahoo.com I want to be able to nslookup. Does that make sense? I have been trying to use the read command but that does not seem to work. I even was trying to read filename | > filename to see if I could even read any of the data at all. Nothing is working.
How can read the file /var/etc/allInOne.cfg and distribute its contents on multiple cfg files using C language. /var/etc/allInOne.cfg contain the data and the path of each text file.
The source file "/var/etc/allInOne.cfg "look like this: line1 line2 ... line10 filePath:/var/etc/file1.cfg line12 line13 ... line14 filePath:/var/etc/file2.cfg linen .. filePath:/var/etc/filen.cfg the result will be :
The expected result is: /var/etc/file1.cfg will contain line1 to line10 /var/etc/file2.cfg will contain line 12 to line13 /var/etc/filen.cfg will contain linen to linen-1
My problem is that last night, when I was watching some .swf file in firefox, the computer slowed down to the point of my not being able to do anything about it. I shut the computer down and restarted to handle the problem. This worked the first few times, and proceeded to really turn out bad later on.
Now, I have windows and ubuntu on the same hard drive. Whenever I select ubuntu, I get a message saying "GNU GRUB version 1.98-1ubuntu8" and some stuff about how limited Bash-like commands are supported. I can also his tab to do stuff. By using the help command for everything, I have determined that the command "linux" is supposed to load linux and "boot" is supposed to load an OS. Everytime time I pick a command that should load something, it says that I need to load a kernal.
I want to be able to check the contents of a text file for a specific string and remove it from the file from the command prompt. I would basically be searching through a number of files and if a specific string is found I would like it removed automatically. pretty much a find and replace, were the replace is nothing. any one got any ideas on how you would do this. I already have the search part sorted just need to be able to remove the string I don't want from the multiple files.
We have some large files with sampling data in it. Don't want to delete these files. But want to quickly overwrite the file with 0s and/or 1s and preserve the original file size.
someone once told me that use can pass a file to grep and use that to search the contents of another file. if that is the case I'm not entirely sure why the following isn't working for me.
When I eject CD from CDROM by pushing eject button(mounted on CDROM) it still shows CD and it's contents in nautilus file browser. If I replaced the CD it still shows contents of older CD. If I eject CD manually by file browser then there is no such issue. I know this is the kernel issue because this issue has come after updating my kernel from linux 2.6.33 to linux-netbook-2.6.35. I am using MeeGo. I want to know which kernel parameter(or module) I have to add.
I am in the process of writing a program that plays the game mancala. I wanted to create a function that requires the player to choose a number between one and six, should be simple right? I kept having problems, so I started testing stuff out.
Code:
#include <stdio.h> #include <stdlib.h> short move();
[code]....
I am using gcc version 4.3.2 (Debian 4.3.2-1.1). On a whim, I tried something else out; when I change the 'short' variables to 'int' , the problem seems to dissapear.... I tried changing the format string in the scanf statement from "%d" to "%u" which is listed as the appropriate string for the 'short' type, still no luck.
In Ubuntu 10.04, there is a certain file that appears highlighted in terminal. When I try to cat the file, it says there is no such file or directory. How can I see what's in this file? Is this a symbolic link?
/root/.local/share/Trash/files/I have a tar backup file in there and can't get rid of it. I've tried from root with Nautilus, the files disappear for a couple of seconds and then reappear.
Code: touch /var/www/index.html | echo "echo some contents" >> /var/www/index.html but would like to do this without having to specify the directory again with echo, and maybe even use linebreaks / tabs on the echo in. Anyone know a neat one liner?
I'd like to change contents in a *.tgz file. I can uncompress (extract) using: Code: tar xzf archiv.tgz and I get these 3 directories: Code: etc install usr How to compress back to a tgz file?
I have created an incremental backup of a Windows-client folder on a SLES 11 server using find and tar. The resulting file is about 615 MB, but inside the archive is only one file which has a file size of only 9.061 Bytes. BTW: it's a "The Bat!" config fileHere's the backup script:
I have an ISO CD image file and want to extract it's contents to a folder. I know there are ways to mount the image and stuff, but it's complicated. I'm looking for a GUI tool to open up the contets and extract needed files. On windows I would use WinRar to do this. K3B only allows me to burn the stuff, Arch does not work with ISO files :(Is there a similar tool on Linux, preferably from KDE world?
I have a .bkf backup file, created by the Backup utility that Microsoft provides with Windows XP. Is there a way to read the contents of the file using a non-Microsoft OS, preferably Mac OS X or Linux?
