Finding files with the find command is actually more difficult than it should be.
This finds and lists the largest files (more than 200 MB) on the whole file system:
find / -type f -size +200000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
The same, but simpler syntax:
find / -size +200M -ls
This finds the most recently changed files under the current directory:
find . -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort
E.g. to change the permissions of all directories:
find . -type d -print | xargs /bin/chmod ug+rx
To be able to handle directory names with special characters
find . -type d -print0 | xargs -0 /bin/chmod ug+rx
In order to find all tif files in the current directory or below and to compress them (using the ImageMagick "mogrify" command and LZW compression):
find . -name '*.tif' -print | xargs mogrify -compress LZW
To replace the string jeltsch.blogspot.com by the string mnm.no-ip.com/blog you can use perl:perl -pi.bak -e 's|jeltsch.blogspot.com|mnm.no-ip.com\/blog|g' *.html If you want to do a recursive replacement on a directory tree you can try:perl -pi.bak -e 's|jeltsch.blogspot.com|mnm.no-ip.com\/blog|g' `find jeltsch.org -name '*.html'`