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how to insert file contents on match using sed - first occurrence only

debugcn Published at Dev
17
Zell

file contents:

# cat file.txt 
-----
MATCH
-----
MATCH
-----
MATCH
-----

# cat text.txt 
add this text file
before first match

sed commands:

# sed '0,/MATCH/r text.txt' file.txt
-----
add this text file
before first match
MATCH
add this text file
before first match
-----
MATCH
-----
MATCH
-----

# sed '0,/MATCH/i prependme once' file.txt
prependme once
-----
prependme once
MATCH
-----
MATCH
-----
MATCH
-----

I'm trying to merge these commands somehow to get the following output:

-----
add this text file
before first match
MATCH
-----
MATCH
-----
MATCH
-----
steeldriver

With ed instead of sed

ed -s << EOF file.txt
0,/MATCH/-1 r text.txt
,p
q
EOF

or as a one-liner

printf '0,/MATCH/-1 r text.txt\n,p\nq' | ed -s file.txt
-----
add this text file
before first match
MATCH
-----
MATCH
-----
MATCH
-----

(replace ,p by w for in-place editing).

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