if [ -z $(echo $1 | sed -e 's/[0-9]//g') ]; then

来源：学生作业帮助网编辑：六六作业网时间：2024/11/28 15:34:38

if[-z$(echo$1|sed-e''s/[0-9]//g'')];thenif[-z$(echo$1|sed-e''s/[0-9]//g'')];thenif[-z$(echo$1|sed-e''s/[0

if [ -z $(echo $1 | sed -e 's/[0-9]//g') ]; then
if [ -z $(echo $1 | sed -e 's/[0-9]//g') ]; then

if [ -z $(echo $1 | sed -e 's/[0-9]//g') ]; then
什么问题呢?