Hi experts,

I need help with an edit of a .txt file. I want to replace a part of the string with an empty space (i.e. remove the part of the string).

I have many lines like this one:

[{"absoluteLimits":{"conditionalLimits":[{"bidirVolume":4096000,"name"
+:"Home"}],"resetPeriod":{"volume":"monthly day 15 00:??"}},"sliceVolu
+me":5120,"subscriptionDate":"29-09-2016"},<b>{"absoluteLimits":{"cond
+itionalLimits":[{"bidirVolume":102400000,"name":"Home"}],"resetPeriod
+":{"volume":"2400 hours"}},"description":"Promotion_tariffbasic:29-09
+-2016,08-01-2017T10:21","name":"1004","sliceVolume":5120,"subscriptio
+nDate":"30-09-2016T09:21"}]}
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And from this line I want to remove the bolded string. To do this for many lines, basically I need to remove a part of the string that starts with:

{"absoluteLimits":{"conditionalLimits":[{"bidirVolume":102400000,"name
+":"Home"}],"resetPeriod":{"volume":"2400 hours"}},"description":"Prom
+otion_tariffbasic:
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(this is the "common" part for each line, since the date is different for each line)

The problem is that the string contains special characters like ",:,} and a simple search & replace script does not work:

perl -p -e 's/{"absoluteLimits":{"conditionalLimits":[{"bidirVolume":1
+02400000,"name":"Home"}],"resetPeriod":{"volume":"2400 hours"}},"desc
+ription":"Promotion_tariffbasic:.*//s' example.txt
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Do you have any idea how this can be done?

Thanks a lot!

Sonya