Monthly Archives: September 2010

Linux: How To Find Which Package Contains A Specific File

Posted on September 30, 2010 by Masao 

Fedora: # rpm -qf /bin/bash bash-3.0-19.3 Debian/Ubuntu: # apt-get install apt-file # apt-file update # apt-file search perl.pm libapache-mod-perl: usr/lib/perl5/mod_perl.pm …

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Linux: Where is the “replace” command?

Posted on September 28, 2010 by Masao 

“replace” lives in the the “mysql-server” package Fedora: yum install -y mysql-server Debian/Ubuntu: apt-get install -y mysql-server Run it: $ replace replace: No replace options given

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Linux: How To Setup Reverse SSH Tunnel

Posted on September 28, 2010 by Masao 

Let’s assume you’re trying to SSH from your home machine into your office machine, but inbound port 22 is blocked by your office firewall. Here’s how to get around it: On your office machine: $ ssh -fnNTR 1234:localhost:22 my-home-username@my-home-domain.com What … Continue reading →

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subversion: Missing Dependency: libneon.so.25 is needed by package subversion-1.6.12-0.1.el5.rf.i386 (rpmforge)

Posted on September 26, 2010 by Masao 

If you ever run into this problem: # yum install -y subversion Loaded plugins: fastestmirror … –> Finished Dependency Resolution subversion-1.6.12-0.1.el5.rf.i386 from rpmforge has depsolving problems –> Missing Dependency: libneon.so.25 is needed by package subversion-1.6.12-0.1.el5.rf.i386 (rpmforge) subversion-1.6.12-0.1.el5.rf.i386 from rpmforge has … Continue reading →

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daemontools: /usr/bin/ld: errno: TLS definition in /lib/libc.so.6 section .tbss mismatches non-TLS reference in envdir.o

Posted on September 23, 2010 by Masao 

Solution for fixing compilation error for daemontools. This solution also fixes: /usr/bin/ld: errno: TLS definition in /lib/libc.so.6 section .tbss mismatches non-TLS reference in tcpserver.o when compiling ucspi-tcp. Edit this file: admin/daemontools-0.76/src/conf-cc Add this to the end of the gcc line: … Continue reading →

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Ubuntu: How To Find Ubuntu And Kernel Version

Posted on September 22, 2010 by Masao 

$ cat /etc/issue Ubuntu 10.04.1 LTS \n \l $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.04 DISTRIB_CODENAME=lucid DISTRIB_DESCRIPTION=”Ubuntu 10.04.1 LTS” uname -a : print all information uname -r : print the kernel release uname -v : print the kernel version uname -o : … Continue reading →

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Linux: TinyDNS Data File Syntax

Posted on September 22, 2010 by Masao 

. defines an A, NS, and SOA record Z defines the zone record & defines a name server @ defines an MX record + defines an A record ^ defines a PTR record = defines BOTH an A record and … Continue reading →

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Linux: How To Low-Level Format A Hard Drive

Posted on September 21, 2010 by Masao 

If you need to format a drive to erase all of your Nobel-prize-winning research, here’s how to do it. First, identify the drive by device name: # df … /dev/sdb1 731886588 1742280 730144308 1% /media/My Whatever Drive Then, use dd … Continue reading →

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Linux: How To Use Expect

Posted on September 8, 2010 by Masao 

Here’s a simple expect example: #!/usr/bin/expect -f spawn some-script-requiring-input.sh expect “Enter passphrase:” send ThisIsMyPassword\n interact Another example using variables: #!/usr/bin/expect -f set myhost MyCrazyBox spawn ssh $myhost “ls” expect $myhost send “MyPassword” interact Another example installing a printer: #!/usr/bin/expect -f … Continue reading →

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