replace substring in lines using sed or grep

I have a file with a lot of lines, two of them are:

Code:

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videoId: 'S2Rgr6yuuXQ'

var vid_seq=1;

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in a shell script, I have two variables, for id, the value is always 11 characters/numbers

id='fsafsferii2'

id_seq=80

I want to modify these two lines with id and id_seq

videoId: 'fsafsferii2'

var vid_seq=80;

I used

Code:

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sed -i 's/\(videoId: \).*\\1'${id}'/\2/' file

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but there are errors, what is wrong with my script?

thanks

hi,

Code:

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$ cat input.file
videoId: 'S2Rgr6yuuXQ'
var vid_seq=1;
$ id='fsafsferii2'
$ sed "s/\(videoId: '\)[^']*/\1$id/" esolve.in.lf
videoId: 'fsafsferii2'
var vid_seq=1;

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the substitution is on the right hand side. the pattern is on the lhs.

To make a very precise conditional replacement, here is my proposal:

Code:

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id='fsafsferii2'
id_seq=80
sed -ri "s/^(videoId: )'[[:alnum:]]{11}'/\1'${id}'$/;s/^(var vid_seq)=[0-9]+$/\1=${id_seq}'/" file

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