Shell 字符串操作

Shell 字符串操作

赋值

astr="Hello World"
bstr=Hello

substring

echo $astr
echo ${astr:6}
echo ${astr:0:6}

replace

echo ${astr/s1/s2} # ReplaceFirst
echo ${astr//s1/s2} # ReplaceAll

contact

cstr="$astr+$bstr"