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• Using ACK to list directories

  - by KPthunder

  I have a directory listing as follows (given by ls -la): total 8 drwxr-xr-x 6 <user> <group> 204 Oct 18 12:13 . drwxr-xr-x 7 <user> <group> 238 Oct 18 11:29 .. drwxr-xr-x 14 <user> <group> 476 Oct 18 12:31 .git -rw-r--r-- 1 <user> <group> 601 Oct 18 12:03 index.html drwxr-xr-x 2 <user> <group> 68 Oct 18 12:13 test drwxr-xr-x 2 <user> <group> 68 Oct 18 12:13 test2 Running ack . -f prints out the files in the directory: index.html How can I get ack to print out the directories in the directory? I want to ignore the .git directory (which I understand is default behavior for ack). On that note, how can I ignore certain directories? I am using ack 1.9.6 on Mac OSX 10.8.2.

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• Finding custom printer-specific options on *nix

  - by enbuyukfener

  Hey all, I have a printer set up using CUPS (FujiXerox Document Center 1100), it is named DC1100. There are capabilities of the printer that are not shows as options of the printer as listed by: lpoptions -l -d DC1100 The output is below: PrintoutMode/Printout Mode: Draft *Normal High Photo InputSlot/Media Source: Upper Lower MultiPurpose LargeCapacity Manual *Standard PageSize/Page Size: *Letter A4 C5 C6 COM10 DL Executive Legal Monarch Statement PageRegion/PageRegion: Letter A4 C5 C6 COM10 DL Executive Legal Monarch Statement STP_Brightness/Brightness: 0.00 0.02 0.04 [snip] 2.00 STP_Contrast/Contrast: 0.00 0.05 0.10 0.15 [snip] 4.00 STP_ColorCorrection/Color Correction: Accurate Bright Density [snip] Uncorrected STP_DitherAlgorithm/Dither Algorithm: Adaptive EvenTone Fast [snip] VeryFast STP_EnableDensity/Density Enable: *Disabled Enabled STP_Density/Density Value: 0.1 0.2 0.3 0.4 [snip] 8.0 STP_EnableGamma/Composite Gamma Enable: *Disabled Enabled STP_Gamma/Composite Gamma Value: 0.10 0.15 0.20 0.25 [snip] 4.00 STP_LinearContrast/Linear Contrast Adjustment: *False True STP_Duplex/Double-Sided Printing: DuplexNoTumble DuplexTumble *None Resolution/Rendering Resolution: *FromPrintoutMode 150x150dpi 300x300dpi 600x600dpi OutputType/Output Type: *FromPrintoutMode BlackAndWhite Grayscale STP_ImageType/Image Type: *FromPrintoutMode Photo Graphics LineArt None Text TextGraphics STP_Resolution/Resolution: *FromPrintoutMode 150dpi 300dpi 600dpi I am particularly looking for options for: "secure print" (possibly by setting a mode and setting a username) stapling hole punching Perhaps I need a vendor specific driver/PPD file? If so, any pointers as I have no idea where to look for one. I haven't been able to find one on the official site or on sites such as http://www.openprinting.org

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• using a second computer as a mere screen/monitor in X (VNC?)

  - by lara michaels

  Hello My goal is to use three monitors with my Linux system. It is a laptop, so adding another video card is not the easiest solution. (I have investigated a number of such options: getting a docking station with a PCI slot, USB/Cardbus vga adapters, etc, and for the time being don't want to go that way.) I am wondering if using an older desktop+screen I have lying around as the third "monitor" might be the easiest solution, if only there is a way to get it to work as a seamless, integrated desktop. I was wondering if I can use VNC or perhaps X itself (?) to achieve the following: computer A is my main computer; it has all my files, etc. computer B is used just to display on an additional screen keyboard+mouse are connected to computer A use VNC or X to connect the two so that computer B shows a X screen that is just as if it was a third physical screen connected to computer A. I don't know if the last point is clear, but what I mean is that I would like to be able to: be able to have my window manager assign/move around virtual desktops on all three screens move windows back and forth between the screens attached to computer A and the screen of computer B be able to copy something in an app being shown on a screen of computer A and paste it into an app being shown on the screen attached to computer B access the filesystem on my main computer (A) when using applications that are being shown on the screen attached to computer B Basically, I would like X to treat computer B just like it was nothing but a third physical screen... Is this doable? : ) ~lara

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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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• 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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• Piping the output of a program to Preview.app

  - by Abhay Buch

  I'm using an application (the dot program of the graphviz library) that generates a wide variety of file formats including PostScript and PDF. It can send the result to stdout or to a file. I'm currently sending it to a file and opening it with Preview. Is there any way to pipe the output and have it be read by Preview, so that I'd don't have to generate a file and have it lying around? This is going to be used by a number of people who won't know the internal structure of the generating script and I don't want to clutter their folders or complicate their lives. More generally, is there any way to take a program that sends its output to stdout and pass that output to an program that usually takes it's input from a file, without actually creating a file?

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• added shell script to sudoers still getting permission denied

  - by Bill S

  I don't understand this? Other uses of sudo work fine. [oracle@o plugins]$ su Password: [root@ plugins]# su nrpe bash-3.2$ /home/oracle/obiee/instances/instance1/bifoundation/OracleBIApplication/coreapplication/setup/bi-init.sh bash: /home/oracle/obiee/instances/instance1/bifoundation/OracleBIApplication/coreapplication/setup/bi-init.sh: Permission denied bash-3.2$ sudo -l Matching Defaults entries for nrpe on this host: env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR LS_COLORS MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY" Runas and Command-specific defaults for nrpe: User nrpe may run the following commands on this host: (ALL) NOPASSWD: /home/oracle/obiee/instances/instance1/bifoundation/OracleBIApplication/coreapplication/setup/bi-init.sh bash-3.2$

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• HP-UX -> Linux incremental remote backup

  - by stack_zen

  Hi. I've the need to setup a differential backup process from a range of remote HP-UXes to a central RHEL5 server. I'd happily go with rsync, problem is, stock HP-UX 11.11 has no built-in rsync and I don't have permissions to install any software on the remote stock HP-UXes. How should I approach this? HP-UX provides: fbackup (HP-UX exclusive) cpio (available in RHEL5, allows backing up only the files which changed, but always grabs the totality of the file) ssh remote_user@remote_host 'find /u01/engine/logs/ -type f -name "*.log" | cpio -o | gzip -' | cpio gunzip - | -idmv Those solutions don't really answer my incremental (bandwidth efficiency) problem do they?

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• If I exchange the CPU, must I reinstall the OSes? (swapping cpus from one *nix-like to another)

  - by dag729

  Hi, as suggested by the title, I want to change CPU: actually I have two computers, one with Ubuntu running on an AMD Athlon 64 dual core 5200+ and the other with FreeBSD running on an AMD Sempron single core LE-1250. I would like to swap (I am not sure that this is the correct term...) the CPUs from one computer to the other one, that is take the dual core from the ubuntu pc and put it inside the freebsd pc and viceversa. The mobo is the same. Do you think I will encounter problems?

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• grep - what arguments do you usually specify?

  - by meder

  My most common grep line is just.. grep -IRl "text" * However I'm kinda getting tired of retyping this over and over - is there some way I can make an alias command so that those arguments are always enabled? And, I was wondering what arguments you usually specify for text searching - my two arguments 'R' for recursion, 'I' for not including binary types like jpg/gif, and 'l' for line number seem a bit too minimal. Which arguments do you use?

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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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• How do I clear out the ssh-agent entries (on Mac OS X )?

  - by cwd

  I'm running Mac OS X, and it appears that after SSHing to several machines, using identity files, my 'ssh-agent' builds up a lot of identity / keys and then sometimes offers too many to a remote machine, causing them to kick me off before connecting: Received disconnect from 10.12.10.16: 2: Too many authentication failures for cwd It's pretty obvious what's happening, and this page talks about it in more detail: SSH servers only allow you to attempt to authenticate a certain number of times. Each failed password attempt, each failed pubkey/identity that is offered, etc, take up one of these attempts. If you have a lot of SSH keys in your agent, you may find that an SSH server may kick you out before allowing you to attempt password authentication at all. If this is the case, there are a few different workarounds. Rebooting clears the agent and then everything works OK again. I can also add this line to my .ssh/config file to force it to use password authentication: PreferredAuthentications keyboard-interactive,password Anyhow, I saw the note on the page I referenced talking about deleting keys from the agent, but I'm not sure if that applies on a Mac since they appear to be cleared after reboot anyhow. Is there a simple way to clear out all keys in the 'ssh-agent' (the same thing that happens at reboot)?

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• ipfw to redirect traffic from port 80 and 443 to 8080

  - by user1048138

  -A PREROUTING -s 10.0.10.0/24 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 -A PREROUTING -s 10.0.10.0/24 -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 8080 -A POSTROUTING -s 10.0.10.0/24 -o eth0 -j MASQUERADE The above code is what I have used on linux to forward my ports to 8080, how can I do the same on a mac? I have tried test_machine:~ root# ipfw show 00666 0 0 fwd 127.0.0.1,8080 tcp from any to me dst-port 80 and its not working! any suggestions?

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• Shell Command for Getting IP Address?

  - by opierce

  Is there a bash command to find the IP address for an Ubuntu box? I need to find the IP address so I can ssh into the machine later.

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• What is a good partitioning design/scheme for a multi-boot *nix system?

  - by static

  I'm planning to install Debian on my server. I would like to design the partitioning scheme in such a way, that I could install one or more other *nix distributives on that. So, reading many articles I think this scheme could be a good one for the initial idea of multi-boot: /grub /swap /LVM VG1 (for OS1) -> /boot (LV1) / (LV2) /tmp (LV3) /var ... /var/log /home /LVM VG2 (for OS2) -> /boot / /tmp /var /var/log /home ... (other distros) /LVM VG0 (for data) -> /data (LV1) But I'm confused a little bit now: what should be the labels for these partitions (unique or not) and what should be the mounting points looking as (/home (OS1) mounted to /home as well as /home (OS2)...)?

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• Installing "SoX" via the Terminal

  - by timkl

  I'm new to installing applications via the Terminal, so excuse my absolute ignorance on the subject. I want to install SoX ( http://sox.sourceforge.net/ ), so I can do some ninja audio editing. First I installed git, then I installed SoX. I didn't get any error messages and the installation has spawned a sox-folder in my Users/myName-folder. However when I use the program by typing "sox" in the Terminal, nothing happens, all I get is "command not found". Does anybody know how to troubleshoot this?

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• How to to specify network address for a dhcp client

  - by drecute

  I have setup and configured a DHCP server on a sparc running Solaris 10. Now I want to test the DHCP server by creating a DHCP client on another computer running Solaris 11. I would like to know, how do I specify a network address for a dhcp client such that its generated ip address is within a specific subnet. For example: The DHCP server host = 172.1.1.1 So I want the client machine to have an IP Address in the range of 172.1.1.1 255.255.255.0. Please help me.

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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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• Upload database backup from mysql to Amazon S3 or Glacier without creating local file

  - by Rubem Azenha

  Is there a tool that makes possible to backup a Mysql database to Amazon S3 or Amazon Glacier without having o create a local file with the database contents? Something like that: mysqldump -u root -ppass -h host --all-databases | magical-s3-tool s3-bucket backup-yyyy-mm-dd.sql This magical tool would use the pipe data and transfer the backup data directly to S3, without creating a local file.

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• What exactly is there in the /etc/passwd file?

  - by Ram Bhat

  Well we all know that it holds passwords. But cat-ing it gives out nothing. Not even encrypted gibberish. So how exactly is a password stored in this? Is this like a device file or something?

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• How to get Bash shell history range

  - by Aniti

  How can I get/filter history entries in a specific range? I have a large history file and frequently use history | grep somecommand Now, my memory is pretty bad and I also want to see what else I did around the time I entered the command. For now I do this: get match, say 4992 somecommand, then I do history | grep 49[0-9][0-9] this is usually good enough, but I would much rather do it more precisely, that is see commands from 4972 to 5012, that is 20 commands before and 20 after. I am wondering if there is an easier way? I suspect, a custom script is in order, but perhaps someone else has done something similar before.

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• how to do Putty SSH Auto-Login and Run Command File

  - by supportpb

  I am using the follwing to auto login and then run file containng a command. C:\path\to\putty.exe -load "[Sessionname]" -l [user] -pw [password] -m C:\path\to\commands.txt Commands.txt contains the following command ps -elf|grep 'sometext' but when I try to do so a new window for putty comes and exits instantly after login. I cannot see the output of command in commands.txt What is the problem;. Is there error in my approach or I need some more command to make the putty window pause for sometime before exiting.

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• compressing dd backup on the fly

  - by Phil

  Maybe this will sound like dumb question but the way i'm trying to do it doesn't work. I'm on livecd, drive is unmounted, etc. When i do backup this way sudo dd if=/dev/sda2 of=/media/disk/sda2-backup-10august09.ext3 bs=64k ...normally it would work but i don't have enough space on external hd i'm copying to (it ALMOST fits into it). So I wanted to compress this way sudo dd if=/dev/sda2 | gzip > /media/disk/sda2-backup-10august09.gz ...but i got permissions denied. I don't understand.

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• kernel warning disk error for command write - solaris svm

  - by help_me

  Recently this warning came up on my message logs, scsi: [ID 107833 kern.warning] WARNING: /pci@1c,600000/scsi@2/sd@0,0 (sd0): Oct 27 00:14:44 Error for Command: write(10) Error Level:Retryable Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Requested Block: 101515828 Error Block: 101515828 Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Vendor: SEAGATE Serial Number: 0441B9B5H Oct 27 00:14:44 scsi: [ID 107833 kern.notice] Sense Key: Hardware Error Oct 27 00:14:44 scsi: [ID 107833 kern.notice] ASC: 0x19 (defect list error), ASCQ: 0x0, FRU: 0x2 This is showing signs of disk failing in my opinion. I have not seen the messages re-occurring. This is on a Solaris 9 Sparc system V240. The disks are managed by SVM and "metadb" is showing the flags as "a" Are there any tests or indications as to check/see if the disk is actually failing or was that error message initiated by something else. Thank you!

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• Website filtering for OpenVPN clients

  - by Asche

  I am currently trying to block some websites by their domain names for all the clients of my OpenVPN server. My first idea was to use the /etc/hosts file. But, its effects seem to be limited to the host only and not to be taken in consideration by OpenVPN. I then tried to configure bind9 and to interface it with OpenVPN, but that solution was unsuccessful and uneasy to use. After this, I considered using iptables to drop all the packets from/to those websites but that forum thread made me thought otherwise since iptables' behavior with FQDN may generate complex issues. Have you got a solution to block websites for all clients using an OpenVPN server on which I am root?

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