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Find Oldest File

find -type f -printf '%T+ %p\n' | sort | head -n 1

Find Using Text File List

mkdir -p /tmp/{0..9}
find /tmp/ > /tmp/dirs
find $(cat /tmp/dirs) -type d -name "8"

Good Examples

Add Text To End Of All Lines In A Text File

sed -e 's/$/ yes/' ham_emails_new.txt > ham_emails_newer.txt

Add Text To Beginning Of All Lines In A Text File

sed -e 's/^/FromOrTo: /' ham_emails.txt > ham_emails_new.txt

Find Email Address From Text File

cat textfile.txt | grep -i -o '[A-Z0-9._%+-]\+@[A-Z0-9.-]\+\.[A-Z]\{2,4\}'

Extract Certain Headers And Body Of Email

cat `find . -type f ` |formail -c -k -X From: -X Subject: |egrep -v '^--|^<|^Content|charset|^Sent|^This|^$'
cat `find . -type f ` |formail -c -d -k -X From: -X Subject: -s |egrep -v '^--|^<|^Content|charset|^Sent|^This|to be clean.$|=$|</div>$|^$'

Find And Copy Files To A Different Directory

Find any text files, then copy them to a different directory.

find . -name "*.txt" -exec cp {} /path/to/directory \;

Find And Copy Files With Directory Structure

find /path/to/search/ -type f -name '*.mov' -print -exec cp --parents "{}" /path/to/copy/to/ \;

Date Yesterday

date -d "1 day ago" '+%Y-%m-%d'

Last X Command Used

Find the last time you used tar...


Run that same command again...


Thanks to CLIMagic

Files Matching Pattern And Remove File Extension

for FILE in *.conf; do echo "${FILE%%.*}"; done

Largest Directories Or Files


du -Sh | sort -rh | head -n 15


find . -type f -exec du -Sh {} + | sort -rh | head -n 15

Thanks to

Find And Tar Files

The + means tar will only be called once...

find . -type f -exec tar -czvf backup.tar.gz '{}' \+;

Working example...

find public_html/app/design/frontend/ public_html/skin/frontend/ -type f -mtime -12 -print -exec tar -czvf paullys_tweaked_files.tar.gz '{}' \+;

Text In Types Of Files

find . -type f -name '*.doc' -exec grep -Hn "text here" {} \;

Find Then Rename / Add Extension To All Files

find . -type f -exec mv '{}' '{}'.jpg \;

Files Owned By A User

find /path/to/search/ -user nobody -print

Zero Length Files

find /path/to/search/ -size 0


Find any zero length files named tmp.* older than 1 day and delete them...

find /tmp/ -type f -size 0 -name 'tmp.*' -mtime +1 -exec rm -rf {} \;

Find And Delete

Find any files older than 7 days, then delete them but show what you are deleting.

find /path/to/directory -type f -mtime +7 -exec rm {} \; -print

Find And Move

Find any text files, then move them to a different directory.

find . -name "*.txt" -exec mv {} /path/to/directory \;

Files Newer Than Another File

touch --date "2011-12-31" /tmp/foo
touch /tmp/bar
find /tmp/ -type f -newer /tmp/foo

Files Older Than X File

find /path/to/search -type f -name 'fish' \! -newer /path/to/search/in/fish \! -samefile /path/to/search/in/fish |sort


find /home/MailScanner/archive-nfs/ -type f -name 'messages' \! -newer /home/MailScanner/archive-nfs/20150327/messages \! -samefile /home/MailScanner/archive-nfs/20150327/messages |sort

Text Files Created In The Last 30 Days

This will find *.txt files...

find ~/Documents/ -type f -mtime -30 -name '*.txt' -print

This will find true ASCII files...

find ~/Documents/ -type f -mtime -30 -print -exec file {} + | grep ASCII

Most Recently Changed Files

find . -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort

Multiple File Types

find /path/to/search/ -type f \( -name "*.epub" -or -name "*.mobi" \) -printf '%f\n' |sort |uniq

Empty Directories / Folders

find . -empty -type d

Space Used In Folder And Sort By Size

cd /home/user/
du -sch .[!.]* * |sort -h


du -sch /home/user/.[!.]* /home/user/* |sort -h

All Email Forward Files

find /home/ -maxdepth 2 -type f -name '.forward'