bash进行字符串大小写转换

# awk 命令
str1="MATCH"
str2="match"
awk -vs1="$str1" -vs2="$str2" 'BEGIN {
  if ( tolower(s1) == tolower(s2) ){
    print "match"
  }
}'

直接使用变量自身转换
var1=TesT
var2=tEst

echo ${var1,,} ${var2,,} #转换为小写
echo ${var1^^} ${var2^^} #转换为大写
 

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转载自blog.csdn.net/halazi100/article/details/85242647