Useful Commands/File Processing

File System

Purpose	Command
list with color and suffix for dir and link	ls -FG
list add hidden files only single quote is necessary	find . -name '.*'
delete dist directory recursively except README.md and itself.	find ../../assets/swagger/support ! -path *swagger/support ! -name 'README.md' -delete
delete files that filename leads by - or --	rm -- -X --exclude-from
Set file mtime 2013-09-01 00:00:00	touch -t 201309010000 FILENAME

情境	指令
目錄與檔案權限分別設為 755 和 644	find . -type d -exec chmod 755 {} +\ find . -type f -exec chmod 644 {} +
rename	# Test first $ rename -n 's/short_selled-([0-9]{8}).json/selled-$1.json/' short_selled-* rename(short_selled-20190606.json, selled-20190606.json) rename(short_selled-20190610.json, selled-20190610.json) rename(short_selled-20190611.json, selled-20190611.json) ... # Do it $ rename 's/short_selled-([0-9]{8}).json/selled-$1.json/' short_selled-*
搜尋文字檔，複製到另一個目錄	find . -name *.txt -exec cp {} 目的目錄 \;
從所在目錄遞迴掃檔案找 'string'	grep -rn --color -C 2 'string' .
移除 7 天前的 log	find . -name '*.log' -mtime 7 -exec rm -f {} \;
移除超過 7 天的 log	find . -name '*.log' -mtime +7 -exec rm -f {} \;
移除 7 天前到現在的 log	find . -name '*.log' -mtime -7 -exec rm -f {} \;
用 regex 找檔案	find . -regex '.*[0-9]\{4\}.txt'
取檔名中數字的部分	ls file-0001.txt | sed 's/file-\([0-9]\{4\}\).txt/\1/'