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Top Forums UNIX for Beginners Questions & Answers Merging two lines into one (awk) Post 303039823 by RavinderSingh13 on Wednesday 16th of October 2019 05:20:53 AM
Old 10-16-2019
Hello sand1234,

Following is the complete explanation on same.

Code:
awk '                      ##Starting awk command here.
{
  ORS=length==80?"":RS     ##Setting ORS by checking condition if length of current line is 80 characters then set to NULL or set it as new line. 
                           ##Point to be noted here ORS and RS both have new line values by default from starting so setting them as per situation to either we want to print new line in output or not.
}
1
'  Input_file

Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
 

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JOIN(1) 						      General Commands Manual							   JOIN(1)

NAME
join - relational database operator SYNOPSIS
join [ options ] file1 file2 DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If file1 is `-', the standard input is used. File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in each line. There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con- sists of the common field, then the rest of the line from file1, then the rest of the line from file2. Fields are normally separated by blank, tab or newline. In this case, multiple separators count as one, and leading separators are dis- carded. These options are recognized: -an In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2. -e s Replace empty output fields by string s. -jn m Join on the mth field of file n. If n is missing, use the mth field in each file. -o list Each output line comprises the fields specified in list, each element of which has the form n.m, where n is a file number and m is a field number. -tc Use character c as a separator (tab character). Every appearance of c in a line is significant. SEE ALSO
sort(1), comm(1), awk(1) BUGS
With default field separation, the collating sequence is that of sort -b; with -t, the sequence is that of a plain sort. The conventions of join, sort, comm, uniq, look and awk(1) are wildly incongruous. 7th Edition April 29, 1985 JOIN(1)
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