https://old.andunix.net/ 2026-06-03T22:11:07+00:00 https://old.andunix.net/ https://old.andunix.net/_media/favicon.ico text/html 2014-02-22T13:16:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/virtualbox/cli VBoxManage (The VirtualBox CLI) This is a online reference of the output of VBoxManage without options. Oracle VM VirtualBox Command Line Management Interface Version 4.2.16 (C) 2005-2013 Oracle Corporation All rights reserved. Usage: VBoxManage [<general option>] <command> text/html 2013-02-04T22:17:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/solaris/filesystem File System File System Organization * File system organization - filesystem(5) File Systems This is a non-complete list of file systems in Solaris. * hsfs(7FS): High Sierra & ISO 9660 CD-ROM file system * lofs(7FS): loopback virtual file system * pcfs(7FS): FAT formatted file system text/html 2017-01-04T09:33:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/sysadmin/tomcat_upload_limit Increase the Tomcat Upload Limit The “manager”-App of the Tomcats has a limit of 50MiB. This limit is defined in the file WEB-INF/web.xml within the “manager”-App: <multipart-config> <!-- 50MB max --> <max-file-size>52428800</max-file-size> <max-request-size>52428800</max-request-size> <file-size-threshold>0</file-size-threshold> </multipart-config> text/html 2013-02-04T22:17:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/solaris/fstyp fstyp fstyp reports the type of file system. With the -v (verbose) option reports even more informations. * man page: fstyp(1M) Example UFS: ''fstyp'' fstyp /dev/rdsk/c1t0d0s0 ufs UFS: ''fstyp -v'' fstyp -v /dev/rdsk/c1t0d0s0 ufs magic 11954 format dynamic time Wed Dec 23 17:26:29 2009 sblkno 16 cblkno 24 iblkno 32 dblkno 760 sbsize 2048 cgsize 8192 cgoffset 64 cgmask 0xffffffc0 ncg 427 size 20972160 blocks 20654449 bsize 819… text/html 2014-04-28T09:01:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/linux/debian/cleanup_packages Cleanup Packages Purge uninstalled Packages If a package is removed, it is only uninstalled, but the configuration remains on the system. This is a good thing, as you are able to reinstall the package and have it configured with the old configuration. But if you want to cleanup this old stuff, you can ge a list of uninstalled (but not purged) packages with this command: text/html 2014-11-20T08:13:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/generate_key Generate a Test Key openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout testkey.key -out testkey.crt Informations about the used arguments from the OpenSSL man page: * req: PKCS#10 certificate request and certificate generating utility. * -x509: this option outputs a self signed certificate instead of a certificate request. This is typically used to generate a test certificate or a self signed root CA. The extensions added to the certificate (if any) are specified in the configurati… text/html 2013-04-24T12:11:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/android/backup Android Backup To backup your device, use this command. It will automatically insert the current date in the filename: adb backup -apk -shared -all -f $(date '+%Y-%m-%d').db If you are havong problems with the connection (“adb: unable to connect for backup text/html 2013-02-18T14:27:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_all_certificates_in_a_file Print all certificates in a file This command is especially helpful if you want to use Tomcat-/Java-Keystore-Certificates with the Apache webserver. Use the -print_certs to print all the certificates and then cut the file and store each certificate in a single file. text/html 2013-02-04T22:17:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/script/dyndns_updates_without_client DynDNS Updates without a Client My new hosting provide Strato offers DynDNS. I was searching for a DynDNS client for my OpenSolaris Home Server, but a small bash script does the job as good as any other client. #! /bin/bash . ${HOME}/.dyndns.cfg DOMAINS=$(cat ${HOME}/.dyndns.domains) echo "$(date '+%Y-%m-%d %H:%M') $(basename $0)" for domain in ${DOMAINS}; do echo -n " ${domain} - " curl --silent --show-error --insecure --user ${LOGIN} "${UPDATE_URL}?hostname=${domain}" d… text/html 2013-03-01T20:36:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/oracle/spfile_and_pfiles Oracle: SPFile and PFiles Oracle reads its parameters from a file called “SPFile”. You can't change it directly as it's a binary file. Additionally, Oracle can read the parameters from “PFiles”, which are regular text files. Create PFile To export the SPFiles to a PFile, just enter the following in SQLplus: text/html 2013-02-18T14:26:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/compare_key_with_certificate Compare a Key with its Certificate Credit for this example goes to “Verifying that a Private Key Matches a Certificate” from the University of Wisconsin Knowledgebase. To see if a key server.key belongs to the certificate server.crt, they need to have the same “modulus” and “exponent”. openssl x509 -noout -text -in server.crt openssl rsa -noout -text -in server.key text/html 2013-02-04T22:17:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/solaris/exam_notes Notes for the Solaris 10 System Administration Exam (CX-310-200 & -202) I'm preparing myself for the two exams to achieve the Sun Certified System Administrator (SCSA) certification. This are my notes taken while studying the preparation books. Managing File Systems List Devices To list the system's devices, you can use the following commands: text/html 2013-03-10T21:06:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/mac/mac_command_line_audio Command Line Audio Change Mac Audio Volume from Command Line To change the audio volume from remote of my Mac at home, I needed a command line tool which I can use via ssh. I've found it here: OS X Daily - Change the system volume from the command line. It's as easy as sudo osascript -e "set Volume 10" text/html 2014-04-28T08:07:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/debug_server_certificate_from_client Debug Server Certificate from Client Credit for this example goes to “ Checking A Remote Certificate Chain With OpenSSL” from langui.sh. openssl s_client -showcerts -connect www.andunix.net:443 Informations about the used arguments from the OpenSSL man page: * s_client: SSL/TLS client program * -showcerts: display the whole server certificate chain: normally only the server certificate itself is displayed. text/html 2015-11-25T09:43:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/mac/rmdir rmdir for OSX The Finder on OSX creates .DS_Store files in the directories to store its settings. This makes removing directories from the command line quite complicated: $ rmdir test rmdir: test: Directory not empty $ rm test/.DS_Store $ /bin/rmdir test text/html 2013-02-04T22:17:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/script/iconv Change Encoding with iconv Convert Single File iconv -f iso-8859-1 -t utf-8 -o OUTPUT.txt INPUT.txt Converts INPUT.txt from iso-8859-1 to utf-8 and writes it to OUTPUT.txt. Convert All Files in a Directory for f in $(find . -type f) do iconv -f iso-8859-1 -t utf-8 -o ${f}_$$_TEMP ${f} \ && mv ${f}_$$_TEMP ${f} done text/html 2015-12-09T07:36:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_certificate Print Information about a Certificate openssl x509 -in testkey.crt -noout -text Informations about the used arguments from the OpenSSL man page: * x509: Certificate display and signing utility. * -in testkey.crt: This specifies the input filename to read a certificate from or standard input if this option is not specified. text/html 2013-03-08T10:45:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/linux/debian/timezone Setting the Timezone The timezone is stored in the file /etc/timezone. Check the Timezone cat /etc/timezone Example: # cat /etc/timezone Europe/London Set the Timezone You can use vi: vi /etc/timezone Or set it directy: echo "Europe/Berlin" > /etc/timezone text/html 2014-09-05T12:12:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/java/firefox_java-plugin Install the Java-Plugin for Firefox To install the Java plugin for Firefox, you have to create a symlink from Firefox's plugin directory /usr/lib/firefox-addons/plugins/ to the file libnpjp2.so in the JRE's “lib” dir. sudo ln -s \ ${JAVA_HOME}/jre/lib/amd64/libnpjp2.so \ /usr/lib/firefox-addons/plugins/libnpjp2.so text/html 2014-05-16T06:36:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/linux/disable_core_dumps Disable Core Dumps To disable core dumps create a file /etc/security/limits.d/no_core_dumps with the content * hard core 0: echo '* hard core 0' > /etc/security/limits.d/no_core_dumps Based on the “Nix Craft” article Linux Disable Core Dumps. linux sysadmin admin config text/html 2015-01-29T09:15:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_key Print Information about a Key openssl x509 -inform DER -in testkey.cer -noout -text Informations about the used arguments from the OpenSSL man page: * x509: Certificate display and signing utility. * -inform DER: This specifies the input format normally the command will expect an X509 certificate but this can change if other options such as -req are present. The DER format is the DER encoding of the certificate and PEM is the base64 encoding of the DER encoding with header and footer lines … text/html 2015-02-11T14:42:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/download_server_certificate Download a Server Certificate First, load the certificate chain from the server: openssl s_client -showcerts -connect www.example.org:443 </dev/null This will output the whole server certificate chain. Every chertificate ist wrapped between ----- text/html 2015-11-30T12:09:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/sysadmin/ssh SSH SSH with Public Key Authentication only /etc/ssh/sshd_config Make sure that your SSH config file (sshd_config) contains these settings: PubkeyAuthentication yes PasswordAuthentication no If you changed the config, make sure to restart sshd to activate ist: text/html 2013-03-01T20:40:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/oracle/exp Oracle: EXP Export all Objects from an Account Enter the account name insteand of {user}. exp USERID=\'/ as sysdba\' FILE={user}.dmp FULL=N OWNER={user} admin exp oracle text/html 2013-02-04T22:17:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/solaris/etc/path_to_inst /etc/path_to_inst * path_to_inst(4) The file /etc/path_to_inst maps physical device paths to driver name and driver instance number. Example: e1000g0 "/pci@0/pci@0/pci@1/pci@0/pci@2/network@0" 0 "e1000g" solaris config device text/html 2018-09-19T12:34:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/script/compare_directories Compare directories For each of the directories, generate a digest file: find DIR -type f -exec shasum {} + | LC_ALL=C sort -d -k 2 > shasums.txt It's important to use LC_ALL=C and the option -d of sort, to get compareable results on different machines. text/html 2013-02-04T22:17:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/solaris/dladm2dot Virtual Network Visualization OpenSolaris supports virtual networks using virtual interfaces connected with virtual switches. This feature was introduced with Project Crossbow in OpenSolaris 2009.06. To visualize the internal network(s), I created a perl script which takes the output of