# Find files by case-insensitive extension (ex: .jpg, .JPG, .jpG):
find . -iname '*.jpg'

# Find directories:
find . -type d

# Find files:
find . -type f

# Find files by octal permission:
find . -type f -perm 777

# Find files with setuid bit set:
find . -xdev \( -perm -4000 \) -type f -print0 | xargs -0 ls -l

# To find files with extension '.txt' and remove them:
find ./path/ -name '*.txt' -exec rm '{}' \;

# Find files with extension '.txt' and look for a string into them:
find ./path/ -name '*.txt' | xargs grep 'string'

# Find files with size bigger than 5 Mb and sort them by size:
find . -size +5M -type f -print0 | xargs -0 ls -Ssh | sort -z

# Find files bigger thank 2 MB and list them:
find . -type f -size +20000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'

# Find files modified more than 7 days ago and list file information
find . -type f -mtime +7d -ls

# Find symlinks owned by a user and list file information
find . -type l --user=username -ls

# Search for and delete empty directories
find . -type d -empty -exec rmdir {} \;

# Search for directories named build at a max depth of 2 directories
find . -maxdepth 2 -name build -type d

# Search all files who are not in .git directory
find . ! -iwholename '*.git*' -type f

# Find all files that have the same node (hard link) as MY_FILE_HERE
find . -type f -samefile MY_FILE_HERE 2>/dev/null

# Find all files in the current directory and modify their permissions
find . -type f -exec chmod 644 {} \;

# Find files with extension '.txt.' and edit all of them with vim
# vim is started only once for all files
find . -iname '*.txt' -exec vim {} \+

# Find all files with extension '.png' and rename them by changing extension to
# '.jpg' (base name is preserved)
find . -type f -iname '*.png' -exec bash -c 'mv "$0" "${0%.*}.jpg"' {} \;

# Use logic and grouping to delete extension-specific files.
find \( -iname "*.jpg" -or -iname "*.sfv" -or -iname "*.xspf" \) -type f -delete

# List all executable files, by basename, found within PATH.
find ${PATH//:/ } -type f -executable -printf "%P\n"