55 lines
1.3 KiB
Bash
55 lines
1.3 KiB
Bash
#!/usr/bin/env bash
|
|
|
|
################### 单引号和双引号 ###################
|
|
################### 拼接字符串 ###################
|
|
# 使用单引号拼接
|
|
name1='white'
|
|
str1='hello, '${name1}''
|
|
str2='hello, ${name1}'
|
|
echo ${str1}_${str2}
|
|
# Output:
|
|
# hello, white_hello, ${name1}
|
|
|
|
# 使用双引号拼接
|
|
name2="black"
|
|
str3="hello, "${name2}""
|
|
str4="hello, ${name2}"
|
|
echo ${str3}_${str4}
|
|
# Output:
|
|
# hello, black_hello, black
|
|
|
|
################### 获取字符串长度 ###################
|
|
text="12345"
|
|
echo ${#text}
|
|
# Output:
|
|
# 5
|
|
|
|
################### 获取字符串长度 ###################
|
|
text="12345"
|
|
echo ${text:2:2}
|
|
# Output:
|
|
# 34
|
|
|
|
################### 查找子字符串 ###################
|
|
text="hello"
|
|
echo `expr index "${text}" ll`
|
|
# Output:
|
|
# 3
|
|
|
|
################### 截取关键字左边内容 ###################
|
|
str="feature/1.0.0"
|
|
branch=`echo ${str#feature/}`
|
|
echo "branch is ${branch}"
|
|
|
|
################### 截取关键字右边内容 ###################
|
|
key=`echo ${str%/1.0.0}`
|
|
echo "key is ${key}"
|
|
|
|
################### 判断字符串中是否包含子字符串 ###################
|
|
result=$(echo "${str}" | grep "feature/")
|
|
if [[ "$result" != "" ]] ; then
|
|
echo "feature/ 是 ${str} 的子字符串"
|
|
else
|
|
echo "feature/ 不是 ${str} 的子字符串"
|
|
fi
|