Move a line in a file

[geirha]

I believe this ed should do it. Note that it edits the file in-place.

printf "%s\n" "/^build/d" "/^source/x" "w" | ed -s file.txt

It sends three commands to ed.

/^build/d  - find the first line that mathces "^build" and delete it (The line's content is stored in the cut buffer)

/^source/x - find the first line that matches "^source" and paste the contents of the cut buffer below it.

w          - write the changes

[Gen2ly]

awk '/build/{
    # if build is found
    f=0    #remove flag
    print $0 # print the current line
    for(i=1;i<=d;i++){ print a[i]  } #print the array of lines after source  and before build...

Not sure how the array understands to the source line, but thanks for the explanation. I'm getting to like how awk works.

how did you call it ?, it should be

thisscriptfile.awk foofile.txt

...

Yeah, I called this from my script path which is a hidden folder. I'm thinking your script is interpretting the . as a regexp variable???

I believe this ed should do it. Note that it edits the file in-place.

printf "%s\n" "/^build/d" "/^source/x" "w" | ed -s file.txt

It sends three commands to ed...[/code]

Yeah, I originally wrote the thread trying to remember this command. I had seen 'ed' before but didn't remember it. +1 for helping me remember this and for ease of use.

I've run into a bit of a problem though. At times, (I've discovered) the source and build lines expand over more lines. For example:

source=('78905905f5a4ed82160c327f3fd34cba'
        '5277a9164001a4276837b59dade26af2'
        '3f8b60b6fbb993c18442b62ea661aa6b')

build=('a-file-name'
       'another-file-name')

I've tried using the ed command and defining a range:

printf "%s\n" "/^build/,/)/d" "/^source/,/)/x" "w" | ed -s file.txt

with no luck. Can I do this with 'ed'??? Or anyone know a way to get awk to do it??

[ghostdog74]

source=('78905905f5a4ed82160c327f3fd34cba'
        '5277a9164001a4276837b59dade26af2'
        '3f8b60b6fbb993c18442b62ea661aa6b')

build=('a-file-name'
       'another-file-name')

... Or anyone know a way to get awk to do it??

you will need extra check, since your build ends with ), you can check whether it spans another line.

/build/ && !/\)$/ {
  # if build found but does not end in )
  s=$0
  getline #get the next line
  s=s$0 # join them
  # if you are sure those statements don't span more than 2 lines
  print s
}
/build/ && /\)$/{
  .......
}