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如何在两个连续的 , 之间插入字符串？

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如何在两个连续的 , 之间插入字符串？

我想N.A.在两个连续的之间插入一个字符串,。

这是我的绳子。

5 Local A2A SMS valid for 1 day , 10 A2A SMS valid for 2 days , 10 Local A2A SMS for 2 days only , Daily 5 Local A2A night SMS for 2 days , daily 5 local A2A night SMS for 7 days ,,,,, 5 local A2A night SMS for 2 days ,,, Outgoing Rs 40/min and Incoming Rs 30/min. Applicable only on selected countries and Operators ,,, Outgoing Rs 30/min and Incoming Rs 20/min. Applicable only on selected countries and Operators ,,,,,,,,, 5 Local night A2A SMS(11PM to 6 AM-2 days) ,, 5 Night A2A SMS for 1 Day ,, Roaming Tariff - Incoming Free, Outgoing local @ 80p/min, STD @1.15Rs/min with Talk Time 25 in main A/c ,,, 5 night local A2A sms (2 Days) ,,, Top up TT in Main a/c 95.79 + 5 A2A Night SMS. SMS valid for 2 days ,,, 300 MB 3G/4G Data  , 138.51 TT(unltd val)+5 nite A2ASMS, SMS valid for 2 days , Roaming Tariff - Incoming Free, Outgoing local @ 80p/min, STD @1.15Rs/min with Talk Time 120 in main A/c ,, 500 MB 3G/4G data for 30 Days  , 2 SMS valid for 2 days , 1Gb 3G/4G and 100TT , 1.5GB 3G/4G and 100TT , 2GB 3G/4G and 100TT , 2.5GB 3G/4G and 100TT , 3GB 3G/4G and 100TT , 3.5GB 3G/4G and 100TT , 4GB 3G/4G and 100TT , 200 MB 3G/4G Data , Roaming Tariff - Incoming Free, Outgoing local @ 80p/min,

例如，字符串中有5个连续的、3个连续的、6个连续的逗号。我想N.A.在每个逗号之间插入。

,,,,,转换为,N.A.,N.A,N.A.,N.A.,等

答案1

使用 GNU sed：

echo "your string with commas" | sed ':a;s/,,/,N.A.,/g;ta'

:a：名称为 a 的标签

s/,,/,N.A.,/g: 搜索并替换所有 ( g),,为,N.A.,

ta：如果s///替换成功，则分支到标签a

答案2

你可以在 bash 中这样做：

 a="5 Local A2A SMS valid for 1 day , 10 A2A SMS valid for 2 days , 10 Local A2A SMS for 2 days only , Daily 5 Local A2A night SMS for 2 days , daily 5 local A2A night SMS for 7 days ,,,,, 5 local A2A night SMS for 2 days ,,, Outgoing Rs 40/min and Incoming Rs 30/min. Applicable only on selected countries and Operators ,,, Outgoing Rs 30/min and Incoming Rs 20/min. Applicable only on selected countries and Operators ,,,,,,,,, 5 Local night A2A SMS(11PM to 6 AM-2 days) ,, 5 Night A2A SMS for 1 Day ,, Roaming Tariff - Incoming Free, Outgoing local @ 80p/min, STD @1.15Rs/min with Talk Time 25 in main A/c ,,, 5 night local A2A sms (2 Days) ,,, Top up TT in Main a/c 95.79 + 5 A2A Night SMS. SMS valid for 2 days ,,, 300 MB 3G/4G Data  , 138.51 TT(unltd val)+5 nite A2ASMS, SMS valid for 2 days , Roaming Tariff - Incoming Free, Outgoing local @ 80p/min, STD @1.15Rs/min with Talk Time 120 in main A/c ,, 500 MB 3G/4G data for 30 Days  , 2 SMS valid for 2 days , 1Gb 3G/4G and 100TT , 1.5GB 3G/4G and 100TT , 2GB 3G/4G and 100TT , 2.5GB 3G/4G and 100TT , 3GB 3G/4G and 100TT , 3.5GB 3G/4G and 100TT , 4GB 3G/4G and 100TT , 200 MB 3G/4G Data , Roaming Tariff - Incoming Free, Outgoing local @ 80p/min,"
 b=
 while [ "$b" != "$a" ]
 do 
   b="$a"
   a="${a/,,/,N.A.,}"
 done
 echo "$a"

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