1. In firefox, right click on an image and do Copy link location. Then use that link in your script. {1..21} is shorthand for the space separated list from 1 to 21, i.e.: “1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21”.
[ $ii -le 21 ] is shorthand for “test $ii -le 21”
# using a for loop for ii in {1..21} do wget "http://helms-deep.net/~rwh/blog/wp-content/uploads/2011/03/img${ii}.jpg" done # using a while loop ii=1 while [ $ii -le 21 ] # spaces are required do wget "http://helms-deep.net/~rwh/blog/wp-content/uploads/2011/03/img${ii}.jpg" ii=`expr $ii + 1` # spaces are required done |
For an interesting discussion: why did I use ii for my incrementer instead of i?
2. Note the double quotes, which are required to escape the filenames which contain special characters (spaces and parentheses). It is always good practice to wrap variables that contain filenames in double quotes for this reason.
for file in img*.jpg do mv "$file" "`basename "$file" .jpg` (modified).jpg" done |
3. First, make sure imagemagick is installed:
sudo apt-get install imagemagick |
for file in img*\ \(modified\).jpg do convert -resize 50% "$file" "`basename "$file" .jpg` (small).jpg" done |
4. First, we install the software we need:
sudo apt-get install vorbis-tools sudo apt-get install lame |
Then we convert the files:
wget http://helms-deep.net/~rwh/files/lara_st_john.tar.gz tar xvzf lara_st_john.tar.gz cd lara_st_john/bach_violin_concertos for file in *.ogg do oggdec "$file" lame --vbr-new `basename "$file" .ogg`.wav `basename "$file" .ogg`.mp3 done |
for file in *.ogg do base=`basename "$file" .ogg` vorbiscomment "$file" > "$base.comment" tt=`grep -e "^title" "$base.comment" | sed -e 's/title=\(.*\)$/\1/'` ta=`grep -e "^artist" "$base.comment" | sed -e 's/artist=\(.*\)$/\1/'` tg=`grep -e "^genre" "$base.comment" | sed -e 's/genre=\(.*\)$/\1/'` ty=`grep -e "^date" "$base.comment" | sed -e 's/date=\(.*\)$/\1/'` tl=`grep -e "^album" "$base.comment" | sed -e 's/album=\(.*\)$/\1/'` oggdec "$file" lame --vbr-new --tt "$tt" --ta "$ta" --tg "$tg" --ty "$ty" --tl "$tl" "$base.wav" "$base.mp3" rm -f "$base.comment" rm -f "$base.wav" done |
