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Lcross Portugal
Asked: 2018-10-08 12:52:20 +0800 CST

how can sed match pattern delete line plus one and insert diferent file

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I believe i'm pretty close but there is 1 command missing..

i have file1.txt

rrrrrrrrrrrrrrrrr
dddddddddddddddddd
id="8" efwef
aaaaaaaaaaaaaaaaaaa
cccccccccccccccccccc
xxxxxxxxxxxxxxxxxxxxx

file2.txt

123

123

what i need is :

rrrrrrrrrrrrrrrrr
dddddddddddddddddd
123

123
cccccccccccccccccccc
xxxxxxxxxxxxxxxxxxxxx

explained: find pattern (id="8") delete pattern line +1 insert into file1.txt content of file2.txt

i got this sed command 

sed -e '/id="8"/,+1{' -e 'r /tmp/file2.txt' -e 'd' -e '}' -i /tmp/file1.txt

it does all i need ... except it inserts file2.txt twice...

probably because the ,+1 but i tryed several combos but can't get to it

sed

1 Answers

  1. Best Answer

    Instead of trying to specify the next line via an address range, try using N to pull it into the pattern space before the d:

    $ sed -e '/id="8"/{r file2.txt' -e 'N;d;}' file1.txt
rrrrrrrrrrrrrrrrr
dddddddddddddddddd
123

123
cccccccccccccccccccc
xxxxxxxxxxxxxxxxxxxxx
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