Any one tried puting breakpoint while debugging a core file? I have been using a gdb for running it.. But unsuccessful to put a breakpoint before executing it. Any sugestion or tool for doing it would be welcomed..
Thanks :) (0 Replies)
How do I put wallpaper from the internet on the Unix desktop? For example, I want to know how to perform the same operation as "right click-> Set as Wallpaper" on a graphics on a web page, in Windows.
Thanks! :rolleyes: (3 Replies)
I need to separate Pascal style identifiers (TheyLookLikeThis) into words separated by an underscore (_).
I've tried sed 's//&_&/' but this won't work (obviously). I'd love some help. (4 Replies)
Hello, I was just reading around these forums when I had an idea, without being able to really answer my question for myself due to some circumstances, so hopefully someone can give me a hand. I have an old desktop PC that has served me very well. I got an Asus G73JH though, so I mostly used the... (2 Replies)
I want to make a program where you have to insert binary numbers like this:
do
{
iBinary = getche();
}while(iBinary == 1 || iBinary == 0);
after you get the numbers I want them to be placed behind eachother so you will get:
input:
1
1
0
1
output:
1101 (7 Replies)
Hi,
I generated many figures in .png format (approximately 120). Right now I need to pair the figures on a single page so that the files with the same file name (i.e. jack) that end with .matrix.png are placed on the left and .cdt.png is on the right (so jack.matrix.png with jack.cdt.png... (6 Replies)
Hello ,
I am searching a directory for a file and have to assign the filename to a variable .
The variable must have form $$filename
So my code is
echo "'$$filename='`ls -lrt *PreMatch*.csv| head -1 | nawk '{print $9}'`"
however $$ is converting to a number .
How could I make it $$... (3 Replies)
What are the steps you need to take when you put an old HD in a new computer? I just did this. Every time it makes it to the windows boot screen then restarts. I have a bunch of old engineering software that is not compatible with the newer versions of windows. I figured this out after I bought... (6 Replies)
Discussion started by: cokedude
6 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)