General :: How To Ignore Hidden Characters
Nov 3, 2010
I'm trying to look at a file and find 6 or more consecutive consonants (everything except a vowel). However I have a hidden $ character at the end of each line in the file. For some reason I can't reference to it in any of the pattern searching commands.
For example: grep '[^aeiouAEIOU$]{6,}' file| more
This command returns words that contain 5 consonants at the end (because it interprets the hidden $ as not a vowel). How can I make it ignore the hidden character? Or more specifically how do I refer to the hidden character in my pattern searches?
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Jun 26, 2010
How can I change those heavy black dots that are generated in the hidden password field to asterisks? I have looked in gconf-editor but haven't run across it. Or maybe it's in a totally different place?
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Aug 28, 2011
While modifying the definition of my PS1, I saw that "[" and "]" markers should be added to help bash to compute the right display lenght. Many exemples on the web do not use them or even mention them.I searched for a solution to add them automatically, like with sed, but I didn't find any example.Are they still needed and is there a recommandation not to use sed to define PS1?
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May 6, 2010
just a general weirdness, but some folders that are in my /home folder don't show up. if i check "show hidden folders", they still don't show up. for all terms and purposes, they are simply not there. however, if i search for them through the search tool, or beagle, they show up as being in my /home folder. so, anyone have any idea how this happened, or how i can remedy this?
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Feb 26, 2011
Last time,I changed the icon for the ding-dictionary,it used the gear-wheel symbol before. The I saw,that the hidden directories also used the new icon,and now they are all gone Did install the old 256.53-NVIDIA-driver last night,but that should not be the reason ?
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Apr 25, 2011
I use Ubuntu, and Google Chrome mostly. How can I kill these HTTP headers, so that my browser caches this data? I believe it is XHR. Here are the relevant HTTP response headers:Cache-Control:no-cache, no-store, must-revalidate Pragma:no-cache.I also have Firefox, is there a plugin or something I can use to not respect "no-cache"?
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Jul 28, 2010
I am using grep to filter out directories I am not interested in like this:svn stat | grep -v data/charts | grep -v lib/model | grep -v web/picsIt seems a bit "hacky". Is there a better way to specify more than one string to ignore, so that I dont have to chain multiple grep commands?
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Jul 28, 2011
I am performing a dry run using Rsync on 2 different boxes.While i'm doing that, Under destination directory, I want a specific directory x to be ignored for sync.Please let me know the exact pattern to ignore the directory.The current command I'm using is:rsync -avnc --delete $LOCAL_DIR $USERNAME@$DESTINATION_IP:$REMOTE_DIRunder DESTINATION_IP, I would want to ignore a particular directory under REMOTE_DIR.
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Jan 13, 2010
I installed a Amsynth from Lucid in Karmic using:
dpkg --force-depends-version -i amsynth_1.2.2-1_i386.deb
The reason for installing the Lucid version is because Karmic version is 3 years old and crashes on my machine. The Lucid Amsynth package depends on newer versions of libatk1 and libjack0 than Karmic has, but I thought I would take a risk, and turns out Amsynth runs fine. However aptitude tries to uninstall Amsynth every time I do an upgrade. I think I've managed to put it on hold but now aptitude aborts. How can I tell aptitude to ignore the broken package and carry on.
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Apr 8, 2010
I am using Rsync to backup files to a another machine, the users on my fileserver do not exist on the backup server so Rsync throws errors about the permissions. It copies the files fine but I want to get rid of the errors and have Rsync ignore the permissions when backing up.
/backup is a mounted ftp directory
Below is the current command and output:
Code:
root@Fileserver:~# rsync -av --delete /shared/fileshare/ /backup/backup
building file list ... done
created directory /backup/backup
./
manager/ .....
rsync: chown "/backup/backup/manager/.chironfs.txt.c6MbJ7" failed: Operation not permitted (1)
rsync: chown "/backup/backup/manager/.cronman.txt.hdBG4P" failed: Operation not permitted (1) .....
sent 211115 bytes received 274 bytes 7686.87 bytes/sec
total size is 210263 speedup is 0.99
rsync error: some files could not be transferred (code 23) at main.c(977) [sender=2.6.9]
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Apr 19, 2011
Is there a way to force rsync to not make directories in its destination directory; ie, to simply dump all of the files from the source directory directly into the destination without copying any of the folders that the files were originally in? I tried --no-dirs, but that seems to only be for empty directories.
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Mar 13, 2010
I need only one of the lines having the same ending. It does'nt matter which lines to discard as long long as one with the same ending is retained. Of course I have to retain any unique lines too.
myfile:
aaaa bb 12345
ccc aaa 1234
abc de zzzzz
b cc dd
[Code]....
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Mar 11, 2010
I have a csv file that has around 3 million rows. I want to process this file so that it creates a new file that contains only the rows that have 2 characters or less in the first column column.At the moment i am using SQL Loader but its taking too long so im wondering whether this would be easier if done in Unix?
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Feb 15, 2010
What I want to achieve is, if I have following in my file:
x y
X z
I should be able to find the pair, x Y and replace it with x a. So, basically I want to search for case sensitive 'x' but search and replace case insensitive 'y'. How should I do it? Can this be achieved with 'sed' command?
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Jul 1, 2010
I'm trying to set up rsync to only copy new songs from my computer to another. I'm using the "--ignore-existing" argument, but it appears to copy all files anyway. The client (source) is Windows 7 64-bit running DeltaCopy Client and the server (destination) is Synology DS410 (running rsyncd).
Here is the syntax:
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Jul 8, 2011
What command could I use in terminal to delete all ASCII characters? That is, delete a-z, A-Z, 0-9, and all punctuation? I have a file containing Chinese characters, and I want to remove everything else and leave just the Chinese.
I can use grep to leave only the lines that have Chinese in them, but this still leaves a lot of non-Chinese stuff on those lines. Does anyone know how I could actually remove everything that isn't Chinese?
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Jun 18, 2010
How to tell the kill command to ignore processes if that process is not alive?
For example: 3453 is an alive process but 44534 is not.
kill -9 3453 44534
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Jul 2, 2010
I'm using andLinux and for whatever reason, emacs seems to think that the file I'm editing has been changed every time I try to edit/save and keeps reprompting me. Very annoying. Is there a way to make emacs stop checking the file on the disk?
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Mar 12, 2011
I am facing some problem with the mailx commmand. When i run the mailx command from the command line it sends it to the correct mail address which i mention.
#cat mailbody | mailx -s "Test" sampleaddr@abc.com
But when i run the same command from a perl script, it appends the machine name (hostname.abc.com) to the mail address, and the mail address (sampleaddr@abc.com - which i entered) becomes invalid [URL] - found in the maillog), failing to reach the receiver. I am running it from the csh shell. how to avoid this addition.
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Jul 14, 2010
I'm currently studying for my Linux+ test and I'm getting conflicting information regarding the rm -rf command. Yes, I know this a dangerous command, but my question is in regard to how the command functions. In one book I'm studying it says that rm -rf / home/myfolder (there's a space in there) will delete the entire root directory because there is a space between the root and home directory. It says that if there is a spacing such as this, it will ignore anything after the space, so in this case, it would delete the root directory and stop, not that there would be anything left anyway. Then in another book I have, it says that if you did a rm -rf folderName / (with the intention of adding the trailing slash to indicate it is a directory and not a folder) it will delete everything in folderName (assuming it's a child directory of your pwd) and then CONTINUE on and delete the root directory. Now, those two statements contradict each other. When you remove a directory, does the command line ignore anything after a space or not?
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Feb 7, 2011
I would like to create a directory public_html/archive that is a mirror of public_html/images, except that deletions in the images directory don't cause corresponding deletions in archive.
I was going to manage all of this in code, but then I figured, maybe the system can handle it for me in a robust way.
Note that the website will reference archive in real time, so it has to be an instant mirror and not something done nightly, etc.
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Jun 16, 2010
I have my OpenSuse 11.1 box set up with utf-8, however, every time I try to open a file with utf-8 characters with vi it can't handle those characters properly.
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Feb 10, 2011
What should do? Or how to delete that I have 2 hidden in my PC?
I know nothing that's why please tell me detail if some one know about it?
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May 7, 2011
I am new to linux. How to hide a folder,and how to access a folder which was already hidden (the folder should not show any properties if we hide it).
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Jun 30, 2011
Hidden directory is .XXX, there is a "." in front. How to make it non-hidden? I mean, you can see it at terminal with ls command.
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Feb 15, 2010
how to list only hidden files in current directory ?
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Apr 15, 2010
I have a created an ext3 partition and when i tried to set is hidden flag, there seems no effect. how to set the hidden flag of an ext3 partition?
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Apr 15, 2011
I am struggling to understand where PackageKit is launched from at boot time (fedora FC13), and I'm starting to suspect that - since my previous experiences with much older Linux distros - in modern systems daemons/services/programs are launched at boot time from many other different points. In my case, I can't find an origin point for this program in /etc/rc5.d Where can I find a list of places to look into?
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Jun 21, 2011
I can use TeamViewer to get into this remote host. It has sshd running. I would like to ssh to it. But it gives the system's IP as 192.168.xx.yy. How do I ssh into it?
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May 23, 2011
I had Windows on my machine but I decided to try Ubuntu 11.04. I kept my partitions where I store music, movies and stuff and it is OK, I can open anything, but I can't open the files that were in a hidden folder. I see then, I can browse my Windows hidden directories, but I can't open the files!
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