99乘法表
for
[root@localhost ~]# ./1.sh
1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
[root@localhost ~]# vim 1.sh
#!/bin/bash
for ((q=1;q<=9;q++))
do
for ((w=1;w<=$q;w++))
do
e=$[$q*$w]
echo -n -e "$q*$w=$e\t"
done
echo ""
done
while
[root@localhost ~]# ./2.sh
1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
[root@localhost ~]# vim 2.sh
#!/bin/bash
q=1
while [ $q -lt 10 ]
do
w=1
while [ $w -le $q ]
do
e=$[$q*$w]
echo -n -e "$q*$w=$e\t"
let w++
done
echo ""
let q++
done
输出环境变量PATH所包含的所有目录以及其中的所有可执行文件
[root@localhost ~]# cd /usr/bin/
[root@localhost bin]# ll -a zsoelim
lrwxrwxrwx. 1 root root 6 3月 2 14:01 zsoelim -> soelim
[root@localhost bin]# ll -a xzcmp
lrwxrwxrwx. 1 root root 6 3月 2 14:01 xzcmp -> xzdiff
[root@localhost bin]# cd ~
[root@localhost ~]# ./0.sh
/usr/local/sbin
...略...
...略...
...略...
vigr
/usr/bin
apropos
...略...
...略...
...略...
xzcat
xzcmp
xzegrep
xzfgrep
ypdomainname
zsoelim
/root/bin
[root@localhost ~]# vim 0.sh
#!/bin/bash
q=1
while [ $q -lt 6 ]
do
num=`echo $PATH | cut -d ":" -f $q`
echo $num
ls $num 2> /dev/null | while read line
do
if [ -h $num/$line ]
then
echo " $line"
fi
done
let q++
done
输出一条以*表示的直线
[root@localhost ~]# ./3.sh
********************
[root@localhost ~]# vim 3.sh
#!/bin/bash
for i in {
1..20}
do
echo -n "*"
done
echo ""
输出长为20 宽为5的矩形
[root@localhost ~]# ./5.sh
********************
********************
********************
********************
********************
[root@localhost ~]# vim 5.sh
#!/bin/bash
for ((q=1;q<=5;q++))
do
for((w=1;w<=20;w++))
do
echo -n "*"
done
echo ""
done
输出直角三角形
[root@localhost ~]# ./6.sh
*
**
***
****
*****
******
*******
********
*********
**********
[root@localhost ~]# vim 6.sh
#!/bin/bash
for ((q=1;q<=10;q++))
do
for ((w=1;w<=$q;w++))
do
echo -n "*"
done
echo ""
输出为倒直角三角形
表达式一
[root@localhost ~]# ./7.sh
**********
*********
********
*******
******
*****
****
***
**
*
[root@localhost ~]# vim 7.sh
#!/bin/bash
for ((q=10;q>=1;q--))
do
for ((w=1; w<=$q; w++))
do
echo -n "*"
done
echo ""
done
表达式二
[root@localhost ~]# ./11.sh
**********
*********
********
*******
******
*****
****
***
**
*
[root@localhost ~]# vim 11.sh
#!/bin/bash
for ((q=1;q<=10;q++))
do
for ((w=10;w>=$q;w--))
do
echo -n "*"
done
echo ""
done
输出直角在右边的直角三角形
[root@localhost ~]# ./8.sh
*
**
***
****
*****
******
*******
********
*********
**********
[root@localhost ~]# vim 8.sh
#!/bin/bash
for ((q=1;q<=10;q++))
do
for ((w=10;w>=$q;w--))
do
echo -n ""
done
for ((e=1;e<=$q;e++))
do
echo -n "*"
done
echo ""
done
输出等腰三角形
表达式一
[root@localhost ~]# ./9.sh
*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
[root@localhost ~]# vim 9.sh
#!/bin/bash
for ((q=1; q<=10; q++))
do
for ((w=10; w>=$q; w--))
do
echo -n " "
done
for ((e=1; e<=$q; e++))
do
echo -n "*"
done
for ((r=2; r<=$q; r++))
do
echo -n "*"
done
echo ""
done
表达式二
[root@localhost ~]# ./10.sh
*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
[root@localhost ~]# vim 10.sh
#!/bin/bash
for ((q=1;q<=10;q++))
do
for ((w=10;w>=$q;w--))
do
echo -n " "
done
s=$[($q*2)-1]
for ((e=1;e<=$s;e++))
do
echo -n "*"
done
echo ""
done
输出倒等腰三角形
[root@localhost ~]# ./4.sh
*******************
*****************
***************
*************
***********
*********
*******
*****
***
*
[root@localhost ~]# vim 4.sh
#!/bin/bash
for ((q=1;q<=10;q++))
do
for ((w=1;w<=$q;w++))
do
echo -n " "
done
for ((e=10;e>=$q;e--))
do
echo -n "*"
done
for ((r=9;r>=$q;r--))
do
echo -n "*"
done
echo ""
done
输出菱形
[root@localhost ~]# ./12.sh
*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
*****************
***************
*************
***********
*********
*******
*****
***
*
[root@localhost ~]# vim 12.sh
#!/bin/bash
#!/bin/bash
for ((q=1;q<=9;q++))
do
for ((w=10;w>$q;w--))
do
echo -n " "
done
s=$[($q*2)-1]
for ((e=1;e<=$s;e++))
do
echo -n "*"
done
echo ""
done
for ((q=10;q>=1;q--))
do
for ((w=9;w>=$q;w--))
do
echo -n " "
done
for ((e=1;e<=$q;e++))
do
echo -n "*"
done
for ((r=2;r<=$q;r++))
do
echo -n "*"
done
echo ""
done
输出平行四边形
[root@localhost ~]# ./13.sh
******
******
******
******
******
******
[root@localhost ~]# vim 13.sh
#!/bin/bash
for ((q=1;q<=6;q++))
do
for ((w=1;w<=$q;w++))
do
echo -n " "
done
for ((e=1;e<=6;e++))
do
echo -n "*"
done
echo ""
done
输出梯形
[root@localhost ~]# ./15.sh
*******
********
*********
**********
***********
************
[root@localhost ~]# vim 15.sh
#!/bin/bash
for ((q=1;q<=6;q++))
do
for ((w=6;w>=$q;w--))
do
echo -n " "
done
for ((e=1;e<=6+$q;e++))
do
echo -n "*"
done
echo ""
done
输出等腰梯形
[root@localhost ~]# ./14.sh
********
**********
************
**************
****************
******************
[root@localhost ~]# vim 14.sh
#!/bin/bash
for ((q=1;q<=6;q++))
do
for ((w=6;w>=$q;w--))
do
echo -n " "
done
for ((e=1;e<=6+$q;e++))
do
echo -n "*"
done
for ((r=1;r<=$q;r++))
do
echo -n "*"
done
echo ""
done