Linux基础11_条件判断及回圈
2016-04-20 23:49
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vi sh06.sh
#!/bin/bash
read -p"Please input (Y/N): " yn
if ["$yn" == "Y" ] || [ "$yn" == "y" ];then
echo "OK, continue"
exit 0
fi
if ["$yn" == "N" ] || [ "$yn" == "n" ];then
echo "Oh, interrupt!"
exit 0
fi
echo "I don'tknow what your choice is" && exit 0
vi sh07.sh
#!/bin/bash
s=0
i=0
while [ "$i" !="100" ]
do
i=$(($i+1))
s=$(($s+$i))
done
echo "The result of'1+2+3+...+100' is ==> $s"
vi sh18.sh
#!/bin/bash
read -p "Please input adirectory: " dir
if [ "$dir" =="" -o ! -d "$dir" ]; then
echo "The $dir is NOT exist in your system."
exit 1
fi
filelist=$(ls $dir)
for filename in $filelist
do
perm=""
test -r "$dir/$filename" && perm="$permreadable"
test -w "$dir/$filename" && perm="$permwritable"
test -x "$dir/$filename" && perm="$permexecutable"
echo "The file $dir/$filename's permission is $perm "
done
shell 的追踪
sh -n sh07.sh 不运行script,仅查询语法问题
sh -v sh07.sh 先在屏幕显示sh07.sh的内容,再运行
sh -x sh07.sh 讲sh07.sh的全部运行过程列出来
#!/bin/bash
read -p"Please input (Y/N): " yn
if ["$yn" == "Y" ] || [ "$yn" == "y" ];then
echo "OK, continue"
exit 0
fi
if ["$yn" == "N" ] || [ "$yn" == "n" ];then
echo "Oh, interrupt!"
exit 0
fi
echo "I don'tknow what your choice is" && exit 0
vi sh07.sh
#!/bin/bash
s=0
i=0
while [ "$i" !="100" ]
do
i=$(($i+1))
s=$(($s+$i))
done
echo "The result of'1+2+3+...+100' is ==> $s"
vi sh18.sh
#!/bin/bash
read -p "Please input adirectory: " dir
if [ "$dir" =="" -o ! -d "$dir" ]; then
echo "The $dir is NOT exist in your system."
exit 1
fi
filelist=$(ls $dir)
for filename in $filelist
do
perm=""
test -r "$dir/$filename" && perm="$permreadable"
test -w "$dir/$filename" && perm="$permwritable"
test -x "$dir/$filename" && perm="$permexecutable"
echo "The file $dir/$filename's permission is $perm "
done
shell 的追踪
sh -n sh07.sh 不运行script,仅查询语法问题
sh -v sh07.sh 先在屏幕显示sh07.sh的内容,再运行
sh -x sh07.sh 讲sh07.sh的全部运行过程列出来
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