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download all photos from a picasa web album

First install the Picasa package from CPAN
perl -MPicasa -e "Picasa->new()->get_list_of_photos({'userid'=>'TheUserId','album'=>'TheAlbumName'})"

add metadata to a flash video file

I don't know of any standards for which custom metadata tags to use, so for simplicity right now I use title, date, url (html), uri (data), embedurl (for embedding flash player of it in HTML), and copyright. Eventually I want to use XMP, and add geo info and other linked data 

flvtool2 -UP "-title:Architecture In Helsinki - It'5! - Live at Metro, Chicago" -copyright:unknown "-url:http://www.youtube.com/watch?v=xxemKiM60SU" "-embedurl:http://www.youtube.com/v/xxemKiM60SU&rel=1" -date:2007-10-16 "-uri:http://gdata.youtube.com/feeds/videos/xxemKiM60SU" It\'5\!.flv

find all used (unique) values of 'background-image' CSS property

uses jQuery; prints them to console (FireBug) 

var all_props = $('*').map(function(){prop=$(this).css('background-image');return (prop == "none" ? null : prop)});
var props = new Object;
for (var i = 0; i < all_props.length; i++) {
  props[all_props[i]] = null;
}
for (var p in props) {
  console.debug(p)
}

my gpsbabel command 

gpsbabel -i magellanx -f mytrip.log -x track,sdistance=100m -o gpx -F mytrip.gpx

that also splits tracks apart when gaps of 100+ miles

list packages installed in multiple slots 

equery l -d

"prune" packages in multiple slots 

emerge -pP kde

print Camera Model for each jpg file

  • find . -name '*.jpg' | while read file; do jhead "$file" | awk -F\: '/^Camera model : / {printf substr($2,2)}'; echo -ne "\t\t"; echo $file; done

find all FIXME comments

  • find . -type f ! -path '*/.svn/*' | while read file ; do grep -iHn fixme "$file" >> ../fixmes.txt; done

thunderbird 1.0.2 (and others too i'm sure) break links on ")" closing paren

  • so use %29 instead

log emerge output, check for notifications

  • emerge -uDv system > emerge.out 2> emerge.err
  • search for [[33;01m and [[31;01m

copy directory settings to all subdirs

  • find . -type d | while read line; do echo "---> $line <--"; cp ../path/to/good/.directory "$line"; done

image rotate

  • jhead -autorot *.jpg
  • jpegtran -rotate 270 -copy all img_4227.jpg > img_4227y.jpg

disk usage

  • du -s --si `ls -A`

prompt (return value doesn't show right number) 

 GRAY="1;30"
 CYAN="0;36"
 LIGHT_CYAN="1;36"
 LIGHT_BLUE="1;34"
 YELLOW="1;33"
 WHITE="0;1"
 NO_COLOR="0"
 RED="41;1"
 LIGHT_GREEN="1;32"
 BROWN="0;33"
 
 CONDITIONAL_RETURN_VALUE="\`if [[ \$? != "0" ]]; then echo \"\[\033[${RED}m\]\$? \"; fi\`"
 PWD_COUNT="(\`ls \"\$PWD\" | wc | awk '{print \$1}'\`)"
 export PS1="${CONDITIONAL_RETURN_VALUE}\[\033[${LIGHT_BLUE}m\]\u \[\033[${BROWN}m\]\w${PWD_COUNT} \[\033[${YELLOW}m\]\t \[\033[${NO_COLOR}m\]\$ "

doesn't work for files with spaces

gaim aliases

  • alias gaim-last="ls | tail -n 1 | xargs links"
  • alias gaim-chk="cd ~/.gaim/logs/aim/brondsem; ls -latr"

ls aliases

  • alias ls-last='echo "$(pwd)/$(ls -tr | tail -n 1)"'
  • alias ls-first='echo "$(pwd)/$(ls -t | head -n 1)"'
  • e.g. links `ls-last`

many things

  • find . -type d -and -maxdepth 1 -print0 | xargs --replace du --si 2> /dev/null
    • redirect stderr to /dev/null
    • -print0 and --replace to handle single quotes and spaces (respectively, IIUC)

generate javadocs

tab completion ignore files (?)

  • export FIGNORE=CVS

xargs equiv for paths with quotes & spaces

  • find . ... | while read file ; do svn propset svn:eol-style native "$file" ; done

perl OO get/set

One handy thing with OO Perl is that you can define an autoload function, instead of creating a get/set function for each data member. Like so: 

   sub AUTOLOAD {
       my $self = shift;
       my $type = ref($self) || croak "$self is not an object";
       my $name = $AUTOLOAD;
       
       # DESTROY builtin will call the autoload if we don't have one
       return if $name =~ /::DESTROY$/;
       
       $name =~ s/.*://;   # strip fully-qualified portion
       
       unless (exists $self->{$name} ) {
               croak "Can't access `$name' field in object of class $type";
       }
       
       # If an argument was passed in, assume the value is being set,
       #        otherwise, assume the value is being requested
       if( @_ ) {
               return $self->{$name} = shift;
       } else {
               return $self->{$name};
       }
   }

so this would automatically define $person->name(), $person->name("Bob"), $person->peers(\@peerlist), etc. This would work better with array/hash references, rather than arrays/hashes themselves, though.

HTML print part of page

mount vfat 

# dirs: 775 files: 664 group: users
/dev/hdb1      /data      vfat     rw,nosuid,dev,exec,auto,user,async,umask=113,dmask=002,fmask=113,gid=100     0 0

wma2wav ([1])

  • wma2wav -d -e ogg -r /usr/local/bin/oggscr 01\ Track\ 1.wma

invoke Thunderbird compose window w/ attach

  • if not running: /usr/bin/thunderbird -compose attachment=file:///tmp/sval4.tmp/critique7_2.sxw
  • if running: opt/thunderbird/mozilla-xremote-client -a thunderbird 'xfeDoCommand(composeMessage,attachment=file:///tmp/sval4.tmp/critique7_2.sxw)'
  • [2]
  • [3]

select all table rowcounts in mssql 

select i.rowcnt, o.name --, i.name, o.xtype, *
from sysindexes i
inner join sysobjects o
	on i.id = o.id
and o.xtype <> 'S'
and indid < 2
order by o.name
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