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I am new to linux and any bash scripts and have the following problem:

I have this kryptokey:

-----BEGIN CERTIFICATE-----n

MIICSTCCAfCgAwIBAgIRAMsLZqD4PavC7NJz7+5ld+EwCgYIKoZIzj0EAwIwdjELn

MAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3JuaWExFjAUBgNVBAcTDVNhbiBGn

cmFuY2lzY28xGTAXBgNVBAoTEG9yZzEuZXhhbXBsZS5jb20xHzAdBgNVBAMTFnRsn

c2NhLm9yZzEuZXhhbXBsZS5jb20wHhcNMTgxMjMxMTA1ODA5WhcNMjgxMjI4MTA1n

ODA5WjB2MQswCQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UEn

BxMNU2FuIEZyYW5jaXNjbzEZMBcGA1UEChMQb3JnMS5leGFtcGxlLmNvbTEfMB0Gn

A1UEAxMWdGxzY2Eub3JnMS5leGFtcGxlLmNvbTBZMBMGByqGSM49AgEGCCqGSM49n

AwEHA0IABEbH7l3CiqLA4N4wgfilYgyEuxDrMAqDX6BrFOfWhymNosjh5FlJDHtNn

GPDKhjtrI6e1q0NC0l6wh9h9TrBn7N2jXzBdMA4GA1UdDwEB/wQEAwIBpjAPBgNVn

HSUECDAGBgRVHSUAMA8GA1UdEwEB/wQFMAMBAf8wKQYDVR0OBCIEIH7OaekSLJdan

S0yuV9PCsuasGTt/+/35aVBXTVbII2rCMAoGCCqGSM49BAMCA0cAMEQCIEd+YP/6n

tCzG/LueYTEio8ApQSyz94ju07pmc3LZJDKBAiALu66LKhOpKhogY9XEFg4TScOtn

el4dC6OnMMTmRsEtoA==n-----END CERTIFICATE-----n

saved in a file $replacementOrg1 (is the path to that file).
Now I want to replace in a template $file "INSERT_ORG1_CA_CERT" with this certificate and safe it in $org1. But I need to keep the "n" Character.
The result should keep the n and write it into one line.

I already tried:

sed -e "s@INSERT_ORG1_CA_CERT@$(cat $replacementOrg1)@g" $file > $org1

but it interprets the "n" as new line.

So the final Output should look like this, 1 String in 1 Line:

    "-----BEGIN   CERTIFICATE-----nMIICSTCCAfCgAwIBAgIRAMsLZqD4PavC7NJz7+5ld+EwCgYIKoZIzj0EAwIw       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

el4dC6OnMMTmRsEtoA==n-----END CERTIFICATE-----n"

Anybody can help?
Thank you

That is not a valid key. What someone has done is "half-encoding" (I don't know a better term) the newlines - they have added the literal string "n" before every newline. What you very likely want is either the original key with no "n" strings or a single line string where every newline has been replaced with "n".

With the original value you can use replace instead - it supports newlines in the replacement value:

$ replace foo $'foonbar' <<< $'xnfoony'

x

foo

bar

y

Your case should be simply replace 'INSERT_ORG1_CA_CERT' "$(< $replacementOrg1)" "$file" > "$org1".

The substitute command isn't very good with multi-line replacement strings. But we can use GNU sed's read command to work around that:

 echo "${replacementOrg1}" | 

 sed -e '/INSERT_ORG1_CA_CERT/{r /dev/stdin'  -e ';d}' ${file} > ${org1}

How it works:

1. 
   echo the multi-line string, piping it to /dev/stdin.


2. When sed finds the target "INSERT_ORG1_CA_CERT" it reads /dev/stdin and outputs the contents


3. then deletes the search string line, (which is presumed to contain no other text).

The tricky part is the inadequately documented r command -- sed assumes everything after the r is part of the filename. If we tried '/INSERT_ORG1_CA_CERT/{r /dev/stdin;d}' it would bomb with the error:

unmatched '{'

Because sed would think the filename was literally "/dev/stdin;d}". But the error message doesn't complain about the missing file, because sed never complains about a missing r filename. Instead sed complains that there's no } closing brace, because sed thinks the } is part of the filename.

To avoid that error we stick an ' -e ' in there.