Unix : Search & Rescue commands

Useful Unix

-- Find
egrep -Rl <regular expression> <file or files>

-- Find and Replace
grep -l '' ./* | xargs sed -i "" 's/IP4445A/IP445A/'

-- Find and Replace (no RegEx)
-- Add IMO number
grep -l '' ./* | xargs sed -i "" 's|MSC:172:20+++:146::VITNAME|MSC:172:20+++9299551:146::VITNAME|g'
-- Change VVN
grep -l '' ./* | xargs sed -i "" 's|TDT+20+533E+1|TDT+20+FX533E+1|g'


-- Copy Find
cp `egrep -Rl "IP445A" ./*` ../upload/

-- Copy files in a list to a new location
-- OSX use -I / for other Linux distros use -J
cat list.txt | xargs -I % cp % /Users/bassemd/newFolder

-- Count files with a string match
ls -l | grep <STRING> | wc -l

-- Find files older than x days
find <directory> -name "*STRING*" -mtime +2
find <directory> -mtime +2

-- Find files older than x days and execute action
find <directory> -mtime +2 | wc

-- Execute action on each one of the files (here it's delete)
find <directory> -mtime +2 -exec rm {} \;

-- Reload terminal after edit of bash_profile
source ~/.bash_profile

-- Create an alias
alias <code>="command"

-- Dot files
ls -ld ~/.??*

-- Copy dotfiles
cp -R `ls -d /folder/.??*` target

-- Copy folder structure without files
rsync -a /path/from/ /path/to/ --include \*/ --exclude \*

-- Get the list of items NOT matching a specific regex
cat /usr/share/dict/words | grep -Ei '^[^z][a-z]+'