awk supports associative arrays. Also, when you run tests, you should use a reasonable dataset, not just 100 lines. The reason is: what you get with the time command does not reflect your algorithm as much as it reflects creating a process, opening files, etc.
for keys common to file1 and file2 (try this on a big file)
hi again...need new help guys:p
the file contains following infos...
users/abc/bla1.exe
newusers/defgh/ik/albg2.exe
users2/opww/ertz/qqwertzu/rwerwew.exe
how to get the file content into...
users/abc/
newusers/defgh/ik/
users2/opww/ertz/qqwertzu/
with...
you can erase the... (5 Replies)
Let's say I have a line like that:
I want to cut out numbers between two $ including $s. The result should be like that:
I am so-newbei. I am non-stop reading about SED since yesterday and not a programmer. I know that it is a short period, thus maybe I had overlooked something. I... (4 Replies)
Hi,
I'm looking for a command to retrieve a block of lines using sed or grep, probably awk if that can do the job.
In below example,
By searching for words "Third line2" i'm expecting to retrieve the full block starting with 'BEGIN' and ending with 'END' of the search.
Example:
... (3 Replies)
Hi,
I have filename in the following format:
YUENLONG_20070818.DMP
HK_20070818_V0.DMP
WANCHAI_20070820.DMP
KWUNTONG_20070820_V0.DMP
How to retrieve only the digital part with sed or awk and return the following format:
20070818
20070818
20070820
20070820
Thanks!
Victor (3 Replies)
I am trying to retrieve that max 'year' in a text file that is delimited by tilde (~). It is the second column and the values may be in Char format (double quoted) and have duplicate values.
Please help. (4 Replies)
Hello,
i have a file, i open the file and read the line, i want to get the first item in the csv file and also teh third+6 item and wirte it to a new csv file. only problem is that using echo it takes TOO LONG:
please help a newbie. below is my code:
WorkingDir=$1
FileName=`cut -d ',' -f... (2 Replies)
Being new to awk I have a really basic question. It just has to be in the archives but it didn't bite me when I went looking for it.
I've written an awk script, placed it in a file, added the "#!/usr/bin/awk -f" at the top of the script and away I go. "% myAwk <inputfile>" gives me exactly what... (2 Replies)
Hi guys,
I have been trying to do this, but... no luck so maybe you can help me.
I have a line like this:
Total Handled, Received, on queue Input Mgs: 140 / 14 => 0
I need to, get the number after the / until the =, to get only 14 .
Any help is greatly appreciated.
Thanks, (4 Replies)
awk/sed newbie here. I have a HTML file and from that file and I would like to retrieve a text word.
<font face=arial size=-1><li><a href=/value_for_clients/Tokyo/abc_process.txt>abc</a> NDK Version: 4.0 </li>
<font face=arial size=-1><li><a... (6 Replies)
Hi All,
I'm new on this forum, and i'm trying since several days to find out a way to retrieve a expression from the last line containing a pattern. Could you please help me with this ?
E.g. The file is containing the following lines
08/05 17:33:47 STAT1 Response(22) is... (4 Replies)
Discussion started by: Antonio Fargas
4 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)