一、用shell腳本實現進度條
#!/bin/bash
function proc()
4 {
5 count=0
6 bar=""
7 lable=("|" "/" "-" "\\")
8 while [ $count -le 100 ]
9 do
10 let index=count%4
11 printf "[\033[1m\033[1;34m%-101s\033[0m] [%d%%] [%c]\r" "$bar" "$count" "${lable[$index]}"
12 bar=${bar}'#'
13 (( count++ ))
14 sleep 0.05
15 done
16 # printf "\n"
17 }
18 proc
二、求1-100的和(非遞歸)
#！/bin/bash
20 sum=0
21 str=" "
22 for i in {1..100}
23 do
24 let sum+=i
25 [ $i -eq 100 ] && {
26 str=${str}${i}
27 break
28 }
29 str=${str}${i}'+'
30 #((sum=sum+i))
31 done
32 #echo $sum
33 echo "$str=$sum"
三、1-100的求和（遞歸）
#！/bin/bash
function sum()
4 {
5 local val=$1
6 local res
7 if [ $val -eq 1 ];then
8 echo 1
9 return
10 fi
11
12 local tem=$val
13 let tem--
14 local tem1=0
15 tem1=$(sum $tem)
16 let res=$tem1+$val
17 echo $res
18 }
19 sum 100
四、求一個文件中數的最大值、最小值、平均值
file文件中的三個數：100,200,300
1 #!/bin/bash
2 count=0
3 while read line
4 do
5 let ++count
6 [ $count -eq 1 ] && min=$line && max=$line
7 let sum+=$line
8 [ $line -gt $max ] && max=$line
9 [ $line -lt $min ] && min=$line
10 done <file
11 echo "max: ${max}"
12 echo "min: ${min}"
13 printf "argv: "
14 echo "base=10;scale=2;
15 ${sum}/${count}" | bc
五、斐波那契數列（非遞歸）
54 #!/bin/bash
55
56 function fib()
57 {
58 read val
59 fib_arr[1]=1
60 fib_arr[2]=1
61 local count=0
62 while [ $count -le $val ]
63 do
64 let fib_arr[$count+2]=fib_arr[$count+1]+fib_arr[$count]
65 ((count++))
66 done
67 echo ${fib_arr[$val]}
68 }
69 fib
六、斐波那契（遞歸）
#!/bin/bash
function fib()
76 {
77 local val=$1
78 local fiv_val1=0
79 local fiv_val2=0
80 local fiv_curr=0
81 if [ $1 -lt 3 ];then
82 echo 1
83 return
84 fi
85 let val--
86 fiv_val1=$( fib $val )
87 let val--
88 fiv_val2=$( fib $val )
89 let fiv_curr=$fiv_val1+$fiv_val2
90 echo $fiv_curr
91 }
92 ret=$(fib $val)
93 echo "$ret"
七、將一個問價中的字符串轉換：例如："123abc456"->"456ABC123"
file文件中是“123abc456”轉換成“456ABC123”
#!/bin/bash
21 read name
22
23 while read line
24 do
25 str1=$(echo $line | cut -c 1-3)
26 str2=$(echo $line | cut -c 4-6 | tr '[a-z]' '[A-Z]')
27 str3=$(echo $line | cut -c 7-9)
28 echo ${str3}${str2}${str1}
29 done<$name >${name}_bak
30 function main()
31 {
32 read target
33 sum $target
34 }
35 main