深藍色論壇

Parameter Expansion: http://wiki.bash-hackers.org/syntax/pe

以檔名為例, 如下:
Get name without extension
${FILENAME%.*}
⇒ bash_hackers.txt
Get extension
${FILENAME##*.}
⇒ bash_hackers.txt
Get directory name
${PATHNAME%/*}
⇒ /home/bash/bash_hackers.txt
Get filename
${PATHNAME##*/}
⇒ /home/bash/bash_hackers.txt

HowTo: Use Bash Parameter Substitution Like A Pro
http://www.cyberciti.biz/tips/bash-shel ... ion-2.html