Commands by corporate

Commands by corporate_gadfly (3)

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checklist for 64-bit java on Linux

Let's you examine, for example, whether infrastructure folks really provisioned the correct setup. Java 64-bit checklist 1. check if hardware is 64-bit capable by looking for lm flag grep -l 'flags.*\<lm\>' /proc/cpuinfo 2. check if kernel is 64-bit getconf LONG_BIT | grep '64' 3. check if java is 64-bit (simply look for 64-bit in output - if present, then it is, if absent, then it is 32-bit) java -version Show Sample Output
This is sample output - yours may be different.
```
/proc/cpuinfo
64
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) 64-Bit Server VM (build 16.0-b13, mixed mode)
```
0

grep -l 'flags.*\<lm\>' /proc/cpuinfo && (getconf LONG_BIT | grep '64') && java -version

corporate_gadfly · 2012-12-17 16:39:55 5
Download song from youtube for import into itunes (m4a format)

Last argument is the youtube link. Requires ffmpeg
This is sample output - yours may be different.
2

~/sbin/youtube-dl -t --extract-audio --audio-format=m4a http://www.youtube.com/watch?v=DxL8X9mT90k

corporate_gadfly · 2012-07-10 01:18:05 9
Generate schema documentation for an Oracle database

explanation of flags: -dp path to JDBC driver -t Oracle thin driver -o output
This is sample output - yours may be different.
0

java -jar ~/Downloads/schemaSpy_5.0.0.jar -dp ~/instantclient_10_2/ojdbc14.jar -t orathin -db DBNAME -host HOSTNAME -port 1521 -u USERNAME -p PASSWORD -o KSEMBEDDED-ks-1.3-merge

corporate_gadfly · 2012-04-05 17:29:12 4

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Summarise the size of all files matching a simple regex

Use the find command to match certain files and summarise their total size in KBytes.

shows the full path of shell commands

generate a telephone keypad

seems a useless command ...

Disable WoL on eth0

See system users

journalctl -f

a tail -f variant of systemd journal. Follow the most recent updates or if events are appended to the journal

Check if a remote port is up using dnstools.com (i.e. from behind a firewall/proxy)

Shell function; returns 0 if the port is up, 1 otherwise (check $? after executing). First parameter: IP address/hostname Second parameter: port number There is no error checking for the input parameters.

Change the homepage of Firefox

This command modifies the preferences file of Firefox that is located in .mozilla/firefox/*.default/prefs.js. It edits the file with sed and the -i option. Then it searches the string "browser.startup.homepage", and the string next to it (second string). Finally, it replaces the second string with the new homepage, that is http://sliceoflinux.com in the example. It doesn't work if you haven't set any homepage.

Create a Multi-Part Archive Without Proprietary Junkware

Leave it to a proprietary software vendor to turn a cheap and easy parlor trick into a selling point. "Hey guys, why don't we turn our _collection of multiple files_ into a *collection of multiple files*!!" Extract the ^above with this: $ cat pics.tar.gz.??? | tar xzv ^extract on any Unix - no need to install junkware! (If you must make proprietary software, at least make it do something *new*) if [ -e windows ]; then use 7-Zip

Re-emerge all ebuilds with missing files (Gentoo Linux)

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