Difference between revisions of "Miscellaneous"

Latest revision as of 07:59, 3 November 2021

Find open files on mount

 sudo lsof +f -- /var/media

Also useful in case you're trying to work out why an unmounted partition is still showing as 'in use' in tools like e2fsck:

 sudo fuser -v -m /dev/sdX1

List hardware details

sudo lshw -businfo

Add swap space

Create swap partition using fdisk

Create swap filesystem

sudo mkswap <device>

Activate swap

sudo swapon <device>

Modify /etc/fstab to allow swap to be activated at boot time

Change userid/groupid for an existing user/group

Change groupid in /etc/group
Run sudo grpconv to update /etc/gshadow
Change userid in /etc/passwd (and also the primary groupid for any changed groupids)
Run sudo pwconv to update /etc/shadow

Music Naming Strategy

Type	Title	TrackNum	Artist	Sort Artist	Album Artist	Sort Album Artist	Album	Sort Album	Disc	Genre	Compilation
	TIT2	TRCK	TPE1	TSOP	TPE2	TSO2	TALB	TSOA	TPOS	TCON	TCMP
Albums	Title	TrackNum	Artist	BLANK	Directory1	BLANK / Number word	Album	Directory2 [Disc n]	Disc	Genre	BLANK
Compilations	Title	TrackNum	Artist	BLANK	Various Artists	ZZZD	Album	Directory2 [Disc n]	Disc	Genre	1
Singles	Title	BLANK	Artist	BLANK	Various Artists	ZZZH	Singles	BLANK	BLANK	Genre	1
Soundtracks	Title	TrackNum	Artist	BLANK	Various Artists	ZZZL	Album	Directory2 [Disc n]	Disc	Soundtrack (24)	1
Spoken	Title	TrackNum	Artist	BLANK	Directory1	ZZZP	Album	Directory2 [Disc n]	Disc	Genre	BLANK
Fun	Title	BLANK	Artist	BLANK	BLANK	ZZZT	Fun	BLANK	BLANK	Comedy (57)	1

Albums: eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:$artist" --set-text-frame="TSO2:" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:" $file
Compilations: eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZD" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:1" $file
Singles: eyeD3 --to-v2.3 --set-text-frame="TRCK:" --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZH" --set-text-frame="TALB:Singles" --set-text-frame="TSOA:" --set-text-frame="TPOS:" --set-text-frame="TCMP:1" $file
Soundtracks: eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZL" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:1" $file

File Ownership

chown root:admin $file
chmod 664 $file
chown root:admin $dir
chmod 775 $dir

Measuring LAN performance

Host 1 (linux):

iperf -s -p 8123

Host 2 (mac):

~/bin/iperf -c host1 -p 8123

screen: Start a screen session with a title

 screen -S <title>

@@ Line 1: / Line 1: @@
-== Ubuntu (Edgy) Starter Guide ==
+== Find open files on mount ==
-http://ubuntuguide.org/wiki/Ubuntu_Edgy
+  sudo lsof +f -- /var/media
+Also useful in case you're trying to work out why an unmounted partition is still showing as 'in use' in tools like e2fsck:
+  sudo fuser -v -m /dev/sdX1
-== Adding startup service ==
+== List hardware details ==
-To ensure a service which exists in /etc/init.d is run on startup, simply run:
 <pre>
-sudo update-rc.d <service> defaults
+sudo lshw -businfo
 </pre>
-== Enabling Printing ==
+== Add swap space ==
-# /bin/chmod 06555 /usr/bin/lpr /usr/bin/lprm
+* Create swap partition using ''fdisk''
-# /sbin/chkconfig lpd on
-== Hardware ==
+* Create swap filesystem
-=== ATI Radeon on a custom kernel ===
-Stock ubuntu kernels include the ATI kernel source, but if you've built the kernel yourself and you're getting '''atiddxDriScreenInit failed''' errors in Xorg.0.log, you'll need to install this manually with
 <pre>
-sudo apt-get install fglrx-kernel-source
+sudo mkswap <device>
 </pre>
-=== Logitech MX-1000 ===
+* Activate swap
-Add this section to your /etc/X11/xorg.conf:
 <pre>
-Section "InputDevice"
+sudo swapon <device>
-        Identifier      "Logitech MX-1000"
-        Driver          "evdev"
-        Option          "CorePointer"
-        Option          "Name"        "PS2++ Logitech MX Mouse"
-        Option          "Buttons"         "20"
-        Option          "ZAxisMapping"    "4 5"
-EndSection
 </pre>
-where "Name" is read from the relevant "Name" for your device in /proc/bus/input/devices. Then follow the remaining instructions in http://www.ubuntuforums.org/showthread.php?t=65471
-Although this document describes the steps for a USB mouse, this also works when connected to the PS2 port. Note, however, that a Logitech MX-1000 forward and back keys are 8 and 9, and '''xvkbd''' is located in /usr/bin rather than /usr/X11R6/bin. In addition, as stated in the text, part 1.4 is unnecessary.
+* Modify /etc/fstab to allow swap to be activated at boot time
-In newer versions of X11, it seems that evdev is a driver rather than a protocol, so you'll need the line:
+== Change userid/groupid for an existing user/group ==
-<pre>
+* Change groupid in /etc/group
-Driver     "evdev"
+* Run '''sudo grpconv''' to update /etc/gshadow
-</pre>
+* Change userid in /etc/passwd (and also the primary groupid for any changed groupids)
-rather than
+* Run '''sudo pwconv''' to update /etc/shadow
-<pre>
-Driver     "mouse"
-Protocol   "evdev"
-</pre>
-Also, I needed to append "SendCoreEvents" to the Logitech line in the layout section
+== Music Naming Strategy ==
+{| border="1"
+!Type!!Title!!TrackNum!!Artist!!Sort Artist!!Album Artist!!Sort Album Artist!!Album!!Sort Album!!Disc!!Genre!!Compilation
+|-
+!!!TIT2!!TRCK!!TPE1!!TSOP!!TPE2!!TSO2!!TALB!!TSOA!!TPOS!!TCON!!TCMP
+|-
+|Albums||Title||TrackNum||Artist||'''BLANK'''||''Directory1''||'''BLANK''' / ''Number word''||Album||''Directory2 [Disc n]''||Disc||Genre||'''BLANK'''
+|-
+|Compilations||Title||TrackNum||Artist||'''BLANK'''||'''Various Artists'''||'''ZZZD'''||Album||''Directory2 [Disc n]''||Disc||Genre||'''1'''
+|-
+|Singles||Title||'''BLANK'''||Artist||'''BLANK'''||'''Various Artists'''||'''ZZZH'''||'''Singles'''||'''BLANK'''||'''BLANK'''||Genre||'''1'''
+|-
+|Soundtracks||Title||TrackNum||Artist||'''BLANK'''||'''Various Artists'''||'''ZZZL'''||Album||''Directory2 [Disc n]''||Disc||'''Soundtrack (24)'''||'''1'''
+|-
+|Spoken||Title||TrackNum||Artist||'''BLANK'''||''Directory1''||'''ZZZP'''||Album||''Directory2 [Disc n]''||Disc||Genre||'''BLANK'''
+|-
+|Fun||Title||'''BLANK'''||Artist||'''BLANK'''||'''BLANK'''||'''ZZZT'''||'''Fun'''||'''BLANK'''||'''BLANK'''||'''Comedy (57)'''||'''1'''
+|}
-== Convert m4a to mp3 ==
+* '''Albums''': eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:$artist" --set-text-frame="TSO2:" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:" $file
-<pre>
+* '''Compilations''': eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZD" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:1" $file
-ffmpeg -ab <bitrate in kb/s> -i <inputfile> <outputfile>
+* '''Singles''': eyeD3 --to-v2.3 --set-text-frame="TRCK:" --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZH" --set-text-frame="TALB:Singles" --set-text-frame="TSOA:" --set-text-frame="TPOS:" --set-text-frame="TCMP:1" $file
-</pre>
+* '''Soundtracks''': eyeD3 --to-v2.3 --set-text-frame="TSOP:" --set-text-frame="TPE2:Various Artists" --set-text-frame="TSO2:ZZZL" --set-text-frame="TSOA:$album" --set-text-frame="TCMP:1" $file
-Note: the error '''output buffer too small''' can be ignored.
+=== File Ownership ===
+* chown root:admin $file
+* chmod 664 $file
+* chown root:admin $dir
+* chmod 775 $dir
-== Changing default ALSA soundcard ==
+== Measuring LAN performance ==
+Host 1 (linux):
 <pre>
-asoundconf list
+iperf -s -p 8123
-asoundconf set-default-card <cardname>
 </pre>
+Host 2 (mac):
-== List hardware details ==
-<pre>
-sudo lshw -businfo
-</pre>
-== Add swap space ==
-* Create swap partition using ''fdisk''
-* Create swap filesystem
-<pre>
-sudo mkswap <device>
-</pre>
-* Activate swap
 <pre>
-sudo swapon <device>
+~/bin/iperf -c host1 -p 8123
 </pre>
-* Modify /etc/fstab to allow swap to be activated at boot time
+== screen: Start a screen session with a title ==
+  screen -S <title>

Difference between revisions of "Miscellaneous"

Latest revision as of 07:59, 3 November 2021

Contents

Find open files on mount

List hardware details

Add swap space

Change userid/groupid for an existing user/group

Music Naming Strategy

File Ownership

Measuring LAN performance

screen: Start a screen session with a title

Navigation menu

Views

Personal tools

Navigation

Search

Tools