逻辑控制

chanchaw小于 1 分钟linuxcentos

for循环

数组下标

fileNameWithExt="jy0102.mp4"
fileNameArr=(${fileNameWithExt//./ })

len=${#fileNameArr[*]}
# 依据序号循环
for ((i=0;i<${len};i++)); do
  echo "${fileNameArr[${i}]}"
done

逐个元素

fileNameWithExt="jy0102.mp4"
fileNameArr=(${fileNameWithExt//./ })

for item in ${fileNameArr[@]}; do
  echo "${item}"
done