A file has >5K records always. Separated by "|", it has 30 fields for each line. In some lines, I am getting an odd field. say, the 15th field is supposed to be 2 characters but comes in as >2. In this case, for resolving this I need to copy the value of 25th field to the 15th. See below.
I wanted to say LOL and punch my face when I saw post#11 (where Don_Cragun even reduced the string manipulation with a simple regex) in the thread https://www.unix.com/shell-programming-scripting/220553-add-0-start-filename-2.html
I mean, when things can be done with just a one liner, sometimes I... (6 Replies)
Hi All,
I got some awk one liners, how can i split it all into a nice script?
Got these:
gzcat capgw0.log-201308161376632741.gz | sed -n '/2013-08-16 05:56:/,/2013-08-16 05:58:/p' > timebased.log
awk -F":|," 'FNR==NR && /INFO - AId:/ {a=$0;next} END {for (i in a) print i "|" a}'... (8 Replies)
Hi fellas and fella-esses...
There are numerous threads on here where people ask for, and often expect, solutions to difficult problems solved using _one_liners_.
Why do they insist as such when it is virtually no different in execution time with well thought out indented code?
Is it me... (12 Replies)
Discussion started by: wisecracker
12 Replies
LEARN ABOUT V7
join
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 specifed 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.
JOIN(1)
12-19-2012
