Question

使用KSH。我有一个变量，其中包含用双引号引起来并用逗号分隔的字符串，我想遍历这些字符串，我不想将双引号中的逗号识别为分隔符。

我尝试将IFS设置为IFS =“ \”，\“”和IFS =“，”，但是它仍然可以识别双引号内的逗号。

简体：

errorStrings="Some error","Another error","This, error"
oldIFS=$IFS
IFS=","
for error in $errorStrings;do
  echo "Checking for $error"
  #grep "$error" file >/dev/null 2>&1 && echo "$error found"
  continue
done
IFS=$oldIFS


Actual:
Checking for Some error
Checking for Another error
Checking for This
Checking for  error

Expected:
Checking for Some error
Checking for Another error
Checking for This, error

Answer 1

第一个问题是errorStrings不是您所期望的。试试

echo "e=[${errorStrings}]"

如果要在字符串中使用双引号，请使用

errorStrings='"Some error","Another error","This, error"'

在for循环中引用$errorStrings时，您的脚本会更好地工作。

oldIFS=$IFS
IFS=","
for error in "$errorStrings";do
  echo "Checking for $error"
  #grep "$error" file >/dev/null 2>&1 && echo "$error found"
  continue
done
IFS=$oldIFS

仍然必须修改此循环才能删除引号。也许这是使用数组的好时机：

errorStrings=("Some error" "Another error" "This, error")
for error in "${errorStrings[@]}";do
  echo "Checking for $error"
  #grep "$error" file >/dev/null 2>&1 && echo "$error found"
  continue
done

我不确定您的环境中有哪些选择，也许这也行得通：

errorStrings='"Some error","Another error","This, error"'

echo "${errorStrings}" | sed 's/","/"\n"/g' | while read error; do
   echo "Checking for $error"
done

KSH：循环使用双引号逗号分隔的变量

1 个答案: