Good morning. Thanks for the very valuable hard-to-find information I get from you guys.
Can anybody give any suggested websites or references for anyone who wants to begin learning on programming applications in X? Thanks to anyone in advance... (1 Reply)
I have my inputfile in the following format :
From:sdhfhg
dsfhsdjfjdsfh
dsfjdjshjsd
djfhsdjfjsdhjds
Error Description
<aa.aa.aa.aa.aa.aa>
From:ksljfsdhfjh
djfdsjkf
sdjwoquk
dsfsdfj
Error Description
<dd.dd.dd.dd.dd>
I want to read the lines from tag 'From:' thrul <aa.aa.aa.aa.aa.aa>... (1 Reply)
I am new to non Windows operating systems. Does anyone have advice on which UNIX OS vendor would be good for learning purposes. I was looking for a version of UNIX that runs on the Intel platform. Do you have any recommendations on where to purchase the software? Thank you. (14 Replies)
Hi everyone:
I'm developing a dynamic library for notifications, this library is used for a daemon that i've programmed, when something goes wrong the library should send an email to an administrator, but since sending an email is a non-vital process then it can fail (it should work as an... (4 Replies)
Hey, i hope someone can help me with this program.
I need to write a program in shell which will return how many times and how much time have users been logged in system between two dates. We give time as 2 dates as arguments in command line.
Example:
$ nameofprogram 27/04 06/05
... (1 Reply)
i'm just a beginner in unix environment- please help which book to read and which os to use!!! :confused: seriously i've no idea what is unix or how much capable it is!! (1 Reply)
hi all,
Can you suggest me a ebook for unix beginners. I am new to unix. (2 Replies)
Discussion started by: rajasingam
2 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)