CODEWITHSUNDEEP
bashcommand-linesedstr-replace
Zahid Hossain
Zahid Hossain

Reputation: 423

insert entire content of a text file in the position of single line using command line linux

I am bascially trying to replace a single line of text with the entire content of another text file from the command line (linux). Any idea how to do that ?

Upvotes: 2

Views: 357

Answers (3)

Qeole
Qeole

Reputation: 9154

A variant of sat's answer with sed, which does not need to read org_file.txt twice:

sed '/trigger/{
         r newfile.txt
         d
     }' org_file.txt

Or with fewer line breaks:

sed '/trigger/{r newfile.txt
  d}' file.txt

There's a drawback: it's not a one-liner, as r commands interprets everything after it as a filename (more details here).
A workaround was provided by Peter.O (see above link):

sed -f <(sed 's/\\n/\n/'<<<'/trigger/{r new_file.txt\nd}') org_file.txt

Upvotes: 0

sat
sat

Reputation: 14949

You can try this sed,

sed -e '/trigger/r newfile' -e '/trigger/d' org_file

Here,

newfile will have a content a content to be insert when trigger is found in org_file.

Test:

$ cat > org_file
line 1
line 2
line 3
trigger
line 6
line 7
$ cat > newfile
line 4
line 5
$ sed -e '/trigger/r newfile' -e '/trigger/d' org_file 
line 1
line 2
line 3
line 4
line 5
line 6
line 7

Upvotes: 2

Jotne
Jotne

Reputation: 41460

Here is one way to do it with awk

awk 'FNR==NR {a[NR]=$0;f++;next} /trigger/ {for (i=1;i<=f;i++) print a[i];next}1'  newdata orgfile

It stores the newdata in an array a
When trigger is found in orgfile, replace it by all data from array a

If you need to change a line and know the line number change /trigger/ to FNR==20

Upvotes: 0

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