needle is the search term.
gunzip -c *.gz|grep -H needle
du --human-readable | sort --human-numeric-sort -r | head
find /var/ -type f -iname "*" -printf '%s %p\n'| sort -nr | head -10
$ find -name "* *" -type d | rename 's/ /_/g' # do the directories first $ find -name "* *" -type f | rename 's/ /_/g'
rsync -avm --include='*.mp3' -f 'hide,! */' from_dir/ /to_dir
The entire directory structure from from_dir/ is copied to /to_dir,
but only the .mp3 files are copied.
-a ensures all permissions and times on files are unchanged.
-m will omit empty directories.
-v is for verbose output.
--include is a simplified filter rule. In this case hide keeps files from the transfer - the comma separates the prefix from a modifier
-f is a filter rule
-n prints out a dry run - it will tell you what it would do but not actually copy anything.If you don't want the top directory use the trailing slash.
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