Commands by rpavlick

Commands by rpavlick (15)

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Stop Mac OSX from creating .DS_Store files when interacting with a remote file server with the Finder
This is sample output - yours may be different.
0

defaults write com.apple.desktopservices DSDontWriteNetworkStores true

rpavlick · 2010-10-06 13:19:41 4
Print the detailed statistics of transferred bytes by the firewall rules
This is sample output - yours may be different.
1

sudo iptables -L -nv

rpavlick · 2010-07-26 08:53:54 4
which process is accessing the CDROM
This is sample output - yours may be different.
3

lsof -n | grep /media/cdrom

rpavlick · 2010-07-26 08:52:56 10
Add .gitignore files to all empty directories recursively from your current directory
This is sample output - yours may be different.
2

find . $ -type d -empty $ -and $ -not -regex ./\.git.* $ -exec touch {}/.gitignore \;

rpavlick · 2010-04-07 14:40:14 7
Delete leading whitespace from the start of each line
This is sample output - yours may be different.
1

sed 's/^[ \t]*//' input.txt

rpavlick · 2010-04-03 21:11:27 6
Makes the permissions of file2 the same as file1

Also works with: chgrp --reference file1 file2 chown --reference file1 file2
This is sample output - yours may be different.
47

chmod --reference file1 file2

rpavlick · 2010-03-31 12:05:48 14
Sync the date of one server to that of another.

(Useful when firewalls prevent you from using NTP.)
This is sample output - yours may be different.
5

sudo date -s "$(ssh user@server.com "date -u")"

rpavlick · 2010-03-31 11:59:27 5
Avoids ssh timeouts by sending a keep alive message to the server every 60 seconds

ssh_config is the system-wide configuration file for ssh. For per-user configuration, which allows for different settings for each host: echo 'ServerAliveInterval 60' >> ~/.ssh/ssh_config On OSX: echo 'ServerAliveInterval 60' >> ~/.ssh/config or echo 'ServerAliveInterval 60' >> ~/etc/ssh_config
This is sample output - yours may be different.
6

echo 'ServerAliveInterval 60' >> /etc/ssh/ssh_config

rpavlick · 2010-03-31 09:22:54 8
Change Mac OS X Login Picture

Change the file location in the second half of the string to the exact file location of your chosen picture.
This is sample output - yours may be different.
0

defaults write /Library/Preferences/com.apple.loginwindow DesktopPicture "/System/Library/CoreServices/Finder.app/Contents/Resources/vortex.png"

rpavlick · 2010-03-30 22:52:19 5
Drag A Dashboard Widget Onto OS X Desktop

Enables widgets to be placed onto the desktop. Click and hold the widget and press F12 to drag it onto the desktop. Repeat the process again to drag a widget back onto the dashboard. You may need to log off or restart for it to take effect.
This is sample output - yours may be different.
0

defaults write com.apple.dashboard devmode YES

rpavlick · 2010-03-30 22:50:27 4
Convert a Nero Image File to ISO

This line removes the 300k header from a Nero image file converting it to ISO format
This is sample output - yours may be different.
15

dd bs=1k if=image.nrg of=image.iso skip=300

rpavlick · 2010-03-30 22:07:58 8
Convert an ISO file to DMG format in OS X Terminal
This is sample output - yours may be different.
0

hdiutil convert /path/imagefile.iso -format UDRW -o /path/convertedimage.dmg

rpavlick · 2010-03-30 22:03:22 4
Convert a DMG file to ISO in OS X Terminal
This is sample output - yours may be different.
0

hdiutil convert /path/imagefile.dmg -format UDTO -o /path/convertedimage.iso

rpavlick · 2010-03-30 22:02:20 4
List all mounted drives and their accompanying partitions from OS X Terminal
This is sample output - yours may be different.
0

diskutil list

rpavlick · 2010-03-30 21:59:31 4
Spoof your wireless MAC address on OS X to 00:e2:e3:e4:e5:e6

If you want to check that the spoof worked, type the same command as earlier: ifconfig en1 | grep ether Now you will see: ether 00:e2:e3:e4:e5:e6 For the wired ethernet port: sudo ifconfig en0 ether 00:e2:e3:e4:e5:e6
This is sample output - yours may be different.
1

sudo ifconfig en1 ether 00:e2:e3:e4:e5:e6

rpavlick · 2010-03-30 21:48:55 5

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The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following: rsync:: (Everyone seems to like -z, but it is much slower for me) -a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files. -H: preserves hard-links -A: preserves ACLs -X: preserves extended attributes -x: don't cross file-system boundaries -v: increase verbosity --numeric-ds: don't map uid/gid values by user/group name --delete: delete extraneous files from dest dirs (differential clean-up during sync) --progress: show progress during transfer ssh:: -T: turn off pseudo-tty to decrease cpu load on destination. -c arcfour: use the weakest but fastest SSH encryption. Must specify "Ciphers arcfour" in sshd_config on destination. -o Compression=no: Turn off SSH compression. -x: turn off X forwarding if it is on by default. Flip: rsync -aHAXxv --numeric-ids --delete --progress -e "ssh -T -c arcfour -o Compression=no -x" [source_dir] [dest_host:/dest_dir]

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

disable history for current shell session

this will cause any commands that you have executed in the current shell session to not be written in your bash_history file upon logout

Install pip with Proxy

Installs pip packages defining a proxy

urldecoding with one pure BASH builtin

You can use ordinary printf to convert "%23%21%2fbin%2fbash" into "#!/bin/bash" with no external utilities, by using a little known printf feature -- the "%b" specifier converts shell escapes. Replace % with \x and printf will understand the urlencoded string. BASH's printf has an extension to set a variable directly, too. So you get to convert urlencoded strings from garble to plaintext in one step with no externals and no backticks.

Find usb device

I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

pretend to be busy in office to enjoy a cup of coffee

combination of several of the above

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Update twitter with Perl

Requires Net::Twitter. Just replace the double quoted strings with the appropriate info.

Enter your ssh password one last time

Enter your ssh public key in the remote end for future key-based authentication. Just type your password one last time. The next time you should be able to login with the public key. If you don't have a key, generate one with ssh-keygen. Requires Bourne-compatible shell in the remote end.

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