仅在bash中第一列的大写到小写

Question

如何将bash仅将第一列更改为小写？例如:ABC | DEF | GHI到abc | DEF | GHI

谢谢

Answer 1

echo "ABC|DEF|GHI" | sed 's/\([A-Z]*\)\|/\L\1/'

输出:

abc|DEF|GHI