CODEWITHSUNDEEP
filetextsedaddition
dani
dani

Reputation: 41

copy all text from text file and insert it on the beginning of each line sed

I want to copy all the text in a text file and to add at the beginning of each line in another text file.

I have tried with sed, I can put a char at the beginning of each line but I don't how to copy text from another file

I have tried this:

sed 's/^/#/' 2.txt > 3.txt

but this puts only a char or a string.

Example:

I have in the 2.txt the words:

u
ubbia
ubbidiente
ubbidienza
ubbidire
ubertoso

in the second 3.txt I have the same lines but with explanation:

u  = explanation here
ubbia = explanation here
ubbidiente = explanation here
ubbidienza = explanation here
ubbidire = explanation here
ubertoso = explanation here

I want this result:

u              u  = explanation here
ubbia          ubbia = explanation here
ubbidiente     ubbidiente = explanation here
ubbidienza     ubbidienza = explanation here
ubbidire       ubbidire = explanation here
ubertoso       ubertoso = explanation here

Upvotes: 2

Views: 300

Answers (3)

potong
potong

Reputation: 58473

This might work for you (GNU sed):

sed -E 's/.*/printf "%-15s" &/e;s#(\S+).*#s/^\\<\1\\>/&\1/#' file1 | 
sed -f - -e 't;d' file2

This builds a sed script from file1 and runs it against file2. If a line from file1 matches the first word for file2, the printf formatted line from file 1 is prepended to the matching line from file2, otherwise it is deleted. If you prefer to leave unmatching lines from file2 alone, remove the -e 't;d' commands from the above solution.

N.B. This solution does not require either file to be sorted, however for large files it may be time intensive.

From your comments to jas, if the file is 1-1, this may work for you:

parallel -k 'printf "%-15s%s\n" {1} {2}' ::::+ file1 file2

Upvotes: 0

jas
jas

Reputation: 10865

Why do you need the first file at all? Why not just:

$ awk '{print $1 "\t" $0}' 3.txt  | column -t -s $'\t'
u           u  = explanation here
ubbia       ubbia = explanation here
ubbidiente  ubbidiente = explanation here
ubbidienza  ubbidienza = explanation here
ubbidire    ubbidire = explanation here
ubertoso    ubertoso = explanation here

Upvotes: 0

RavinderSingh13
RavinderSingh13

Reputation: 133600

Could you please try following, this solution will make indentation in output as per length of maximum length of 1st column(a logic has been written for it), tested with given samples.

awk '
FNR==NR{
  a[FNR]=$1
  c[$1]
  next
}
($1 in c){
  b[++count]=$0
  len=len>length($1)?len:length($1)
}
END{
  for(i=1;i<=count;i++){
    val=len<length(b[i])?len+(len-length(a[i])):len
    printf("%s%"val"s%s\n",a[i],OFS,b[i])
  }
}
'  2.txt 3.txt

Output will be as follows.

u                   u  = explanation here
ubbia               ubbia = explanation here
ubbidiente          ubbidiente = explanation here
ubbidienza          ubbidienza = explanation here
ubbidire            ubbidire = explanation here
ubertoso            ubertoso = explanation here

Upvotes: 1

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