I have a log file which is continuously added to, called log.file. I'd like to
monitor this file, and when certain lines are found, update some totals in
another file. I've played around with tail -f, grep, and awk, but can't seem
to hit the right note, so to speak.
The lines I'm... (0 Replies)
Hi,
I have two text files containing records in following format:
file1 format is:
name1 age1 nickname1 path1
name2 age2 nickname2 path2
file 1 example is:
abcd 13 abcd.13 /home/temp/abcd.13
efgh 15 efgh.15 /home/temp/new/efgh.15 (4 Replies)
Can someone help me again, I think with awk? I have a file with 4 columns (pipe-delimited):
I just want to convert the last field so that e1 is now 'message 1', e2 is 'message 2', e0 is 'message 3', etc. I don't want to change any other columns because the e0-e10 code may appear as part of a... (4 Replies)
I have an extremely large csv file that I need to search the second field, and upon matches update the last field...
I can pull the line with awk.. but apparently you cant use awk to directly update the file? So im curious if I can use sed to do this... The good news is the field I want to... (5 Replies)
I have a file ("modtest") in which I want to update the last date/time block in the lines beginning with a period. Here is a sample:
.ROMULT 10150908EDT 10270908EDT 10010908EDT RANGE
RAWV2 1.00
.ROMULT 10150908EDT 10270908EDT 10010908EDT FGROUP
CHOWANRV 1.00
.RRIMULT 10150908EDT... (10 Replies)
I have another question I am stuck at :wall:
I have a text file with two columns, like so...
2 0.0627279
3 0.0794451
4 0.108705
5 0.137739
6 0.190394
7 0.217407
8 0.241764
9 0.344458
10 0.460762
I'd like to go through the file line by line until the value in the second column... (3 Replies)
I can not seem to figure out how to update the attached match.txt column 2 using update.txt. However, only the text before the period in updat.txt appears in match.txt.
For example, in update.txt NM_001613.2 matches NM_001613 in match.txt, so is it possible to update the record in match.txt to... (8 Replies)
Hi,
I have a file(testfile.txt) that contains list of variables as shown below. T
$$FirstName=James
$$LastName=Fox
$$Dateofbirth=1980-02-04
……and so on there are 50 different variables.
I am writing a script(script1.sh) that will update the above three variable one by one with the values... (6 Replies)
hi,
i have an csv(which is a month's log file containing userid and log in date ) file which has to be appended to another file say master.log.I need to compare the next month's log data to master.log file .In case, there is new log date for userid it has to get updated in master.log file or i... (2 Replies)
Discussion started by: preema
2 Replies
LEARN ABOUT BSD
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 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)