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Command Line Audio

Anonymous (anonymous@undisclosed.example.com) — 2013-03-10T21:06:49+00:00

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"

Oracle: Resize Instance

Anonymous (anonymous@undisclosed.example.com) — 2013-03-01T20:38:48+00:00

Oracle: Resize Instance In this example, the SGA will be resized to 6GB and the PGA to 2GB. First, change the SPFile: ALTER SYSTEM SET pga_aggregate_target = 2G SCOPE=SPFILE; ALTER SYSTEM SET sga_target = 6G SCOPE=SPFILE; Then, (optionally) export the SPFile to a PFile:

Oracle: SPFile and PFiles

Anonymous (anonymous@undisclosed.example.com) — 2013-03-01T20:36:05+00:00

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:

Automatic Submission of a Form if an Element is changed

Anonymous (anonymous@undisclosed.example.com) — 2013-03-14T08:22:05+00:00

Automatic Submission of a Form if an Element is changed To submit the form if an element changes, you can use onChange="this.form.submit()" Example

Set a Mac's Hostname

Anonymous (anonymous@undisclosed.example.com) — 2015-11-25T08:53:23+00:00

Set a Mac's Hostname To set the permanent hostname, use the scutil utility (enter the desired hostname instead of the_hostname): sudo scutil --set HostName the_hostname Credits * mac osx cli sysadmin

Change Encoding with iconv

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:34+00:00

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

Cursor Size

Anonymous (anonymous@undisclosed.example.com) — 2016-07-12T09:43:10+00:00

Cursor Size To change the mouse cursor size in GNOME, use this command. Substitute the value 32 with your prefered size. gsettings set org.gnome.desktop.interface cursor-size 32 desktop gnome linux mouse cursor settings

MySQL: Change Password

Anonymous (anonymous@undisclosed.example.com) — 2013-12-17T09:09:25+00:00

MySQL: Change Password * Replace {passwd} with the password of the user. * Replace {user} with the name of the user. GRANT USAGE ON *.* TO '{user}'@'%' IDENTIFIED BY '{passwd}'; FLUSH PRIVILEGES; Or you can alternatively use the following: UPDATE mysql.user SET Password=PASSWORD('{passwd}') WHERE User='{user}'; FLUSH PRIVILEGES;

Print Information about a Key

Anonymous (anonymous@undisclosed.example.com) — 2015-01-29T09:15:22+00:00

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 …

Cleanup Packages

Anonymous (anonymous@undisclosed.example.com) — 2014-04-28T09:01:22+00:00

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:

Increase the Tomcat Upload Limit

Anonymous (anonymous@undisclosed.example.com) — 2017-01-04T09:33:36+00:00

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:

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Git

Anonymous (anonymous@undisclosed.example.com) — 2018-12-06T10:07:22+00:00

Git Basics Init Repository Standard: git init [DIR] Bare: git init --bare [DIR] Log See commits between branches: git log master..develop Branches List Branches git branch Switch Branch git checkout BRANCH Delete Branch git branch -d BRANCH Delete Remote Branch

Mercurial

Anonymous (anonymous@undisclosed.example.com) — 2013-07-15T10:39:59+00:00

Mercurial .hgignore Some handy .hgignore expressions: Ignore Mac Files Ignore .DS_Store and ._* files: (^|/)\._[^/]+$ (^|/)\.DS_Store$ NetBeans These expressions exclude the directories build, dist and nbproject/private. Depending on your project setup, you may want to also exclude

SSH

Anonymous (anonymous@undisclosed.example.com) — 2015-11-30T12:09:18+00:00

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: