函数内部sed命令中的bash语法错误，在命令行上运行正常

Question

I've got aa bash script with two functions, one is the main function which includes a case command, that case command will then call a second function and pass a specific argument.

In the second function I have a command that works on the command line, but when run as part of the bash script I get the following error:

: line 57: syntax error near unexpected token `('
: line 57: `           local DATE=`echo $URL|sed -r 's/.*____([0-9]{1,2})_([0-9]{1,2})_([0-9]{1,2}).*/20\3-\1-\2/;s/-([0-9]{1})-/-0\1-/;s/-([0-9]{1})$/-0\1/'`'

the function is,

dlshow ()
{
    local URL=$1
    echo "URL: "$URL
    local DATE=`echo $URL|sed -r 's/.*____([0-9]{1,2})_([0-9]{1,2})_([0-9]{1,2}).*/20\3-\1-\2/;s/-([0-9]{1})-/-0\1-/;s/-([0-9]{1})$/-0\1/'`

I can't figure out why as a bash command I get the error.

Answer 1

尝试这个：

echo $URL | sed -e '...' |  { read DATE ; ... ; }