bashscripts(3)

Example 5-4. Integer or string?

创新互联服务项目包括安宁网站建设、安宁网站制作、安宁网页制作以及安宁网络营销策划等。多年来，我们专注于互联网行业，利用自身积累的技术优势、行业经验、深度合作伙伴关系等，向广大中小型企业、政府机构等提供互联网行业的解决方案，安宁网站推广取得了明显的社会效益与经济效益。目前，我们服务的客户以成都为中心已经辐射到安宁省份的部分城市，未来相信会继续扩大服务区域并继续获得客户的支持与信任！

#!/bin/bash
# int-or-string.sh
# Integer or string?

a=2334                   # Integer.
let "a += 1"
echo "a = $a "           # Integer, still.
echo

b=${a/23/BB}             # Transform into a string.
echo "b = $b"            # BB35
declare -i b             # Declaring it an integer doesn't help.
echo "b = $b"            # BB35, still.

let "b += 1"             # BB35 + 1 =
echo "b = $b"            # 1
echo

c=BB34
echo "c = $c"            # BB34
d=${c/BB/23}             # Transform into an integer.
echo "d = $d"            # 2334
let "d += 1"             # 2334 + 1 =
echo "d = $d"            # 2335

# Variables in Bash are essentially untyped.

exit 0

[@more@]
分享文章：bashscripts(3)
本文链接：http://scyanting.com/article/phohgd.html

bashscripts(3)

其他资讯