2022-08-09 13:51:19
浏览数 (1)
==============常用命令
代码语言：javascript
复制env
echo $path
export
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cp
mv
mkdir
rm
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cd
ls
ll
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more
cat
tail
vi
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ifconfig
getconf LONG_BIT
df -h
==============shell语法
代码语言：javascript
复制#!/bin/bash
#test1
echo "Hello shell"
echo `who`
echo "who"
-----------------------
#!/bin/bash
#t2
echo "test 2"
var1=1
var2=2
let var3=$var2 $var1
echo $var3
echo "end!"
-----------------------
#!/bin/bash
#t3
echo "test 3"
echo "input first integer please:"
read var1
echo "input second integer please:"
read var2
let var3=var2 var1
echo $var1 $var2=$var3
echo "end!"
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#!/bin/bash
#t4
echo "test 4"
var1=$1
if [ $var1 -lt 0 ]
then
echo "illegal!"
fi
echo "end!"
-----------------------
#!/bin/bash
#t5
echo "test 5"
var1=$1
if [ $var1 -lt 0 ]
then
echo "illegal!"
else
echo "Yeah!"
fi
echo "end!"
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#!/bin/bash
#t6
echo "test 6"
var1=$1
if [ $var1 -lt 0 ]
then
echo "illegal!"
elif [ $var1 -lt 60 ]
then
echo "fail!"
else
echo "Yeah!"
fi
echo "end!"
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#!/bin/bash
sum=0
for ((i=1;i<101;i ))
{
let "sum =i"
}
echo "sum=$sum"
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#!/bin/bash
for animal in cat dog pig duck mice
do
echo $animal
done
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#!/bin/bash
sum=0
echo "input your number:"
read num
while(($num>0))
do
let "sum =num"
let "num--"
done
echo "sum=$sum"
