linux.sh

# Find a file

`find . -name <filename>`		          # Find all files in current dir and subdirs
`find . -type d -name <filename>`	    # Find all files matching this name
`find . -mtime -1 -name "*.php"`		  # Find all PHP files modified in the last 24h
`find . -mtime -2 -name "*.php"`		  # Find all PHP files modified in the last 48h
`find . -size +500000k`               # Find all files with size > 500MB
`grep --include=\*.php -rnw . -e "b374k"` # Find all PHP files containing "b374k"


# Counting files

find . -name *.jpg | wc -l     # Counts all JPG files in current dir
find . -name \*.jpg -or -name \*.png | wc -l

# Counts files and dirs in current dir (including subdirs)
for t in files links directories; do echo `find . -type ${t:0:1} | wc -l` $t; done 2> /dev/null

# Count files and dirs in current dir (without subdirs)
for t in files links directories; do echo `find . -maxdepth 1 -type ${t:0:1} | wc -l` $t; done 2> /dev/null


# Calculate size of dirs
`du -chs`                # Complete size of current dir
`du -chs ./*`            # Size of all dirs and files in current dir (no subdir)
`du -cs ./* | sort -n`   # same sorted by size