Hi everyone,
If someone out there could help me out with this problem. I would really appreciate it.
I am trying to convert a file into xml format using Unix shell scripts.
The file has fields with each field having a certain number of bytes, but the fields are not delimited by anything... (10 Replies)
Hi Gurus!
I wonder if anyone can help me, I'm sure you guys can.
I have a text file which contains a lot of data on the one line as follows:
$
What I need to do is pull all of those id values out (eg 2549425) and write them to a list in a text file.
Any help would be greatly... (3 Replies)
I have a directory full of text data files.
Unfortunately I need to get rid of the 7th and 8th line from them all so that I can input them into a GIS application.
I've used an awk script to do one at a time but due to the sheer number of files I need some kind of loop mechanism to automate... (3 Replies)
Hi all,
I have a directory containing many subdirectories each named like KOG#### where # represents any digit 0-9. There are several files in each KOG#### folder but the one I care about is named like KOG####_final.fasta. I am trying to write a script to copy all of the KOG####_final.fasta... (3 Replies)
Hi Guys,
In one of my folders i have 10000 log files starting with sqlfile.....
Iam trying to delete the log files alone from the folder using for loop but i am getting an error
ksh: /usr/bin/ls: 0403-027 The parameter list is too long.
For loop i used
for i in `ls sqlfile*`... (4 Replies)
I am currently trying out MKS Toolkit C Shell, and I've no problems with it until I try add directories to PATH that are located on a network drive.
When I do that, the shell performance slows down significantly and no longer runs fast. In fact, it takes seconds for something that should take... (1 Reply)
I'm baffled..... the system I work on creates files every Mon-Friday
I'm trying to delete all files older than 30 days old from a Unix prompt, the command I'm using is:
find /directory/ -mtime +30 -exec rm {} \;
however it returns /directory/filename: 644 mode ? (y/n) for every file! ... (1 Reply)
Hi,
does anyone have some of those scripts or maybe have idea how to make them?
------------------------------------
1)
block of text multiplication n times:
e.g.
something1 something2 something3
something4 something5 something6
result:
something1 something2 something3
something4... (2 Replies)
I have 4 files in a directory and want to delete only first 2 files only..
$ ls -ltr
total 640
-rw-r--r-- 1 user other 148779 Oct 12 10:50 file1.xls
-rw-r--r-- 1 user other 148779 Oct 12 10:50 file2.xls
-rw-r--r-- 1 user other 148779 Oct 12 10:50 file3.xls... (4 Replies)
Discussion started by: giridhar276
4 Replies
LEARN ABOUT PLAN9
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 one of the file names 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.
Input fields are normally separated spaces or tabs; output fields by space. In this case, multiple separators count as one, and leading
separators are discarded.
The following options are recognized, with POSIX syntax.
-a n In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-v n Like -a, omitting output for paired lines.
-e s Replace empty output fields by string s.
-1 m
-2 m Join on the mth field of file1 or file2.
-jn m Archaic equivalent for -n m.
-ofields
Each output line comprises the designated fields. The comma-separated field designators are either 0, meaning the join field, or
have the form n.m, where n is a file number and m is a field number. Archaic usage allows separate arguments for field designators.
-tc Use character c as the only separator (tab character) on input and output. Every appearance of c in a line is significant.
EXAMPLES
sort /adm/users | join -t: -a 1 -e "" - bdays
Add birthdays to password information, leaving unknown birthdays empty. The layout of is given in users(6); bdays contains sorted
lines like
tr : ' ' </adm/users | sort -k 3 3 >temp
join -1 3 -2 3 -o 1.1,2.1 temp temp | awk '$1 < $2'
Print all pairs of users with identical userids.
SOURCE
/sys/src/cmd/join.c
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b -ky,y; with -t, the sequence is that of sort -tx -ky,y.
One of the files must be randomly accessible.
JOIN(1)