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  • what does the @ symbol mean in ls -l directory listing?

    - by Andrew Arrow
    When I run ls -l on my mac I see two .yml files: -rw-r--r-- 1 aa staff 6 Apr 15 05:50 s1.yml -rw-r--r--@ 1 aa staff 362 Apr 15 05:49 s3.yml same owner, same permissions but one has a @ at the end of the permisions. The one with the @ shows up in my editor, the one without does not. So there must be some significance. How can I turn on the @ for the file without it? I selected the files in the finder and did get info and everything looks identical between the two files.

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  • finger for Windows

    - by tearman
    Ok probably a bit of an odd question, but is there a way to enable "finger" like functionality on a Windows network? we'd basically like the ability to find out where a user is logged in on a network and possibly which users are logged onto a workstation if possible. We're currently on AD2003 functional level, with the intent of going to AD2008 very soon, so compatibility in that arena is preferable.

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  • *nix: Run as different user GUI

    - by singpolyma
    I want to run an application using only GUI as a different user. Not root. I want the user to be presented with a dropdown of system users, select one, enter the password, and the app gets run as that user. Like gksudo but user to run as specified in GUI and not as switch. Does such an app exist?

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  • Is there a way to see any tar progress per file?

    - by Svish
    I have a couple of big files that I would like to compress. I can do this with for example tar cvfj big-files.tar.bz2 folder-with-big-files The problem is that I can't see any progress, so I don't have a clue how long it will take or anything like that. Using v I can at least see when each file is completed, but when the files are few and large this isn't the most helpful. Is there a way I can get tar to show more detailed progress? Like a percentage done or a progress bar or estimated time left or something. Either for each single file or all of them or both.

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  • Question on date and timezone in Linux

    - by LinuxPenseur
    Hi , I did the date command and it gave the following output root@localhost:~$ date Thu Dec 30 14:19:47 UTC 2010 Then i modified the date using date -s command whichn gave the following output root@localhost:~$ date -s "12/30/2010 JST 14:19:47" Thu Dec 30 05:19:47 UTC 2010 I noticed that the time changed to 9 hours behind UTC time to show exactly the JST time. But timezone as you can see is still showing UTC. Why is it showing the correct time and incorrect timezone? Thanks

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  • Webapp in Jetty can't find properties file after running a couple days

    - by Cuga
    I have a webapp running in Jetty on Mac OS 10.6. After a few days of it running and without the server losing power or rebooting, it seems to stop working saying it can't find a properties file. This properties file is included inside the .war file deployed to the /webapps directory. If I restart Jetty as the superuser the web service works again just fine. Can anyone lend any advice to what's going on and how I can fix it? The error being shown when it isn't working is: Problem accessing /my-web-service. Reason: INTERNAL_SERVER_ERROR Caused by: java.lang.NullPointerException at com.company.service.Dao.readFromPropertiesFile(BwDao.java:35) at com.company.service.ServletHandler.doGet(ProxyClass.java:66) ... at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Here's where the properties files exist that it's trying to read from the .war file: And this is how the properties are being read from the classpath: Properties properties = new Properties(); properties.load(Thread.currentThread().getContextClassLoader().getResourceAsStream( "app.properties")); Again, this does work just fine if I have just restarted the server, but it seems to fail after running a few days.

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  • Extract specific files in a tar archive using a wildcard

    - by AdrieanKhisbe
    I'm tring for a script to extract only jpeg pictures from an archive containing maky kind of files. To do so I tried first to use: tar -xf MyTar.tar *.jpg but it failed (*.jpg not found) and suggest me to use "--wildcard". So I tried tar -xf MyTar.tar --wildcard *.jpg I did that, but then the same error and a different warning saying yo me that the option "--wildcard" is ambigious. I've been over the manuel pages for tar, but didn't find a clue about the problem thanks

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  • How to configure sudoers with path wildcards?

    - by C. Lee
    I need sudo for a command for any path under a particular area. Example: sudo mycommand /opt/apps/myapp/... What is the sudoers syntax to allow this command to run in any path that falls under /opt/apps/myapp? This is Solaris 10 sudo. Thank you for your reply, but I don't need wildcards for the path to the commands, but wildcards for the arguments for the commands. For example, we want to do something like... sudo mycmd /opt/userarea/area1 sudo mycmd /opt/userarea/area1/area2 sudo mycmd /opt/userarea/area1/area2/area3 So far, using wildcards for the arguments in sudoers look like this: /opt/userarea/* /opt/userarea/*/* And it seems like if we want to have N levels of directories, then we need N lines in sudoers! Is there a better way to include all N levels in one line in sudoers? Thanks.

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  • SCP command Clarification

    - by david.colais
    I'm using the scp commands to pull some files from the remote server and one variation of the command is not working. I have 2 files names one.xml and two.xml in a remote server and I'm pulling these two files into the current dir using the following command: scp [email protected]:/student/class/Intermediate/one.xml . scp [email protected]:/student/class/Intermediate/two.xml . The above command works fine but if I use wildcards to pull all the xml files in a single shot as shown below it returns scp: No match. scp [email protected]:/student/class/Intermediate/*.xml . Why is it working if I pull the files individually and not working if I try to pull using wildcards.

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  • Make a socket as a user but make it readable and writable by another

    - by user1598585
    I have a software that is run under user A, this software creates a socket in /sockets and the socket should be readable and writable by user B. I have tried setting the directory to have ownership A:A or A:B but when user A creates the socket, it ends up with uid A and gid A. Using ACLs has not helped so far, the default mask is preventing the rights to be effective. rw permisions for B will always turn into jusr r. If what I make is not a socket it will work fine. How can I best accomplish this task? (It is for a web-server where the web-application makes the socket and the web-server software forwards requests to it)

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  • Is there a way to sort my windows within a screen session?

    - by jv1975
    I use screen and have ssh sessions open to a number of different machines from within my screen session. I'd like to keep them in order, for obvious reasons. Often I'll have to connect to a new machine which alphabetically/numerically should fit in between two existing windows. I can't find any way to reorder the windows other than with the "number" command, which swaps my current window with that at the number I specified. So adding a new window to the 15 I already have and then sticking it at position 2, while keeping all the other windows in order as well is cumbersome, to say the least, requiring swaps for all windows past #2. Is there anyway to sort the windows alphabetically? Or a way to "shift" all windows after a certain point up one spot? Or any other suggestions to insert a new window at an arbitrary point while still maintaining the order of all other windows? Thanks!

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  • Linux - preventing an application from failing due to lack of disk space [migrated]

    - by Jernej
    Due to an unpredicted scenario I am currently in need of finding a solution to the fact that an application (which I do not wish to kill) is slowly hogging the entire disk space. To give more context I have an application in Python that uses multiprocessing.Pool to start 5 threads. Each thread writes some data to its own file. The program is running on Linux and I do not have root access to the machine. The program is CPU intensive and has been running for months. It still has a few days to write all the data. 40% of the data in the files is redundant and can be removed after a quick test. The system on which the program is running only has 30GB of remaining disk space and at the current rate of work it will surely be hogged before the program finishes. Given the above points I see the following solutions with respective problems Given that the process number i is writing to file_i, is it safe to move file_i to an external location? Will the OS simply create a new instance of file_i and write to it? I assume moving the file would remove it and the process would end up writing to a "dead" file? Is there a "command line" way to stop 4 of the 5 spawned workers and wait until one of them finishes and then resume their work? (I am sure one single worker thread would avoid hogging the disk) Suppose I use CTRL+Z to freeze the main process. Will this stop all the other processes spawned by multiprocessing.Pool? If yes, can I then safely edit the files as to remove the redundant lines? Given the three options that I see, would any of them work in this context? If not, is there a better way to handle this problem? I would really like to avoid the scenario in which the program crashes just few days before its finish.

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  • set permissions to /bin/su

    - by JiminyCricket
    i need to change my /bin/su permissions back to the default, which is -rwsr-xr-x. 1 root root 42436 2009-09-08 04:52 /bin/su right now its -rwxr-xr-x. 1 root root 42436 2009-09-08 04:52 /bin/su how do I add the s in...? ive never seen that before

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  • syslog ip ranges to specific files using `rsyslog`

    - by Mike Pennington
    I have many Cisco / JunOS routers and switches that send logs to my Debian server, which uses rsyslogd. How can I configure rsyslogd to send these router / switch logs to a specific file, based on their source IP address? I do not want to pollute general system logs with these entries. For instance: all routers in Chicago (source ip block: 172.17.25.0/24) to only log to /var/log/net/chicago. all routers in Dallas (source ip block 172.17.27.0/24) to only log to /var/log/net/dallas. Finally, these logs should be rotated daily for up to 30 days and compressed. NOTE: I am answering my own question

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  • My DNS works! But, what is the simplest way to add something to it?

    - by Alex
    This is my current DNS example.com.db zone file. I followed a tutorial. It works, because when I point to this DNS from another server via resolve.conf, it will actually forward me to the right IP when I do "ping example.com". ; ; BIND data file for example.com ; $TTL 604800 @ IN SOA example.com. info.example.com. ( 2007011501 ; Serial 7200 ; Refresh 120 ; Retry 2419200 ; Expire 604800) ; Default TTL ; @ IN NS ns1.example.com. @ IN NS ns2.example.com. example.com. IN MX 10 mail.example.com. example.com. IN A 192.168.254.1 www IN CNAME example.com. mail IN A 192.168.254.1 ftp IN CNAME example.com. example.com. IN TXT "v=spf1 ip4:192.168.254.1 a mx ~all" mail IN TXT "v=spf1 a -all" Right now, ping example.com....goes to 192.168.254.1. That's great!!! it works! My question is--how can I add something do this file so that when my other servers: ping dbserver1....goes to 44.245.66.222 ping cacheserver1 ....goes to 38.221.44.555 I want to use it like a universal hosts file for my machines.

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  • Can't install xclip on Ubuntu 10.10

    - by wildster
    I'm trying to load an SSH key to Github from a new machine and this command is not working: sudo apt-get install xclip Reading package lists... Done Building dependency tree Reading state information... Done Package xclip is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package xclip has no installation candidate when I try: sudo aptitude install xclip Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done No candidate version found for xclip No candidate version found for xclip The following partially installed packages will be configured: synaptics-dkms 0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0B of archives. After unpacking 0B will be used. Writing extended state information... Done Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Any idea how I can install this? Mucho thanks in advance

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  • Using sed, how can I remove lines with salaries ending 500?

    - by Steve
    Using sed, how can I remove lines with salaries ending 500? Input file: Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300 Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500 Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400 Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245500 Jennifer Cowan:548-834-2348:583 Laurel Ave., Kingsville, TX 83745:10/1/35:58900

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  • Command-line access for Apple Time Machine?

    - by Stefan Lasiewski
    We use Apple's Time Machine to back up our workstations at the office. If I want to restore a file, I need to open up the Time Machine GUI and browse files there. The GUI is ugly eye-candy and gets in my way. Is there a way to browse the Time Machine archive using the Mac's command-line? I'm used to Netapps and other storage appliances. I use backintime for my Ubuntu workstation. To restore a file with one of those systems, you can restore a file with a simple command like: cp .snapshot/daily.0/filename.txt . or cp /backup/backintime/20100611-000002/backup/etc/shadow /etc/shadow Is there an equivalent for Apple's Time Machine?

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  • Is it possible to prevent SCP while still allowing SSH access?

    - by Jason
    Using Solaris and Linux servers and OpenSSH, is it possible to prevent users from copying files using "scp" while still allowing shell access with "ssh"? I realize that 'ssh $server "cat file" ' type file accesses are much harder to prevent, but I need to see about stopping "scp" for starters. Failing that, is there a way to reliably log all SCP access on the server side through syslog?

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