Debian
shell script "$、{}、%、#"用途
run.sh
#!/bin/sh t="123456789" echo $t echo ${t} echo ${t%789} echo ${t#123}
測試
$ ./run.sh 123456789 123456789 123456 456789
$:參數
{}:參數展開
%:去除尾端字串
#:去除開頭字串
shell script "$、{}、%、#"用途
run.sh
#!/bin/sh t="123456789" echo $t echo ${t} echo ${t%789} echo ${t#123}
測試
$ ./run.sh 123456789 123456789 123456 456789
$:參數
{}:參數展開
%:去除尾端字串
#:去除開頭字串