10-16-2012
Quote:
Originally Posted by
null7
Hai Don,
Thanks it works perfectly
![Thumbsup Smilie](https://www.unix.com/images/smilies/thumb.gif)
. But can you explain a bit your second method. I just don't get how the code insert the value 0 in the middle.
Thanks again.
![Smilie Smilie](https://www.unix.com/images/smilies/smile.gif)
Both methods are the same; the 1st one adds
,0 to the end of the next to the last field; the 2nd one adds
0, to the start of the last field. Putting two strings next to each other when assigning a string value to a variable concatenates those strings. Both use OFS (the awk output field separator) instead of a literal comma in case you change from a comma separated value file format to use some other field separator at some point in the future.
This User Gave Thanks to Don Cragun For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I need to insert strings "0000 00" at the each line within the file.
The postion is 37 to 42.
ex.
name1 name2 0000 00
nam name 0000 00
The "0000 00" in two lines should be lined up.
I don't know why it's not lined up when I posted it.
Can anyone help? (14 Replies)
Discussion started by: whatisthis
14 Replies
2. Shell Programming and Scripting
Hi, excuse me for my poor english.
My problem is that:
I have a File
i want to add to each line of that file two strings: one at the beginning of the line, one at the ending.
string1="abcd"
string2="efgh"
i want $string1 content $string2 for each line.
Is that possible? (3 Replies)
Discussion started by: Linux-fueled
3 Replies
3. Shell Programming and Scripting
Dear Folks :),
I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp.
I can do this in vi editor by using this command :g/^/s//BBB_
e,g I have a file named as Test.dat and it containins below text:
michal... (4 Replies)
Discussion started by: Muhammad Afzal
4 Replies
4. Shell Programming and Scripting
Hi all,
I need to insert new text and change existing text in a file. For that I used the below line in the command line and got the expected output.
sed '$a\
hi...
' shell > shell1
But I face problem when using the same in script. It is throwing the error as,
sed: command garbled:... (4 Replies)
Discussion started by: iamgeethuj
4 Replies
5. Shell Programming and Scripting
Enclosed is comma separated text file. I need to write a korn shell program that will parse the text file and insert the values into Oracle database.
I need to write the korn shell program on Red Hat Enterprise Linux server.
Oracle database is 10g. (15 Replies)
Discussion started by: shellguy
15 Replies
6. Shell Programming and Scripting
this is Korn shell unix.
The scenario is I have a pipe delimited text file which needs to be customized. say for example,I have a pipe delimited text file with 15 columns(| delimited) and 200 rows. currently the 11th and 12th column has null values for all the records(there are other null columns... (4 Replies)
Discussion started by: vasan2815
4 Replies
7. Shell Programming and Scripting
HI Guys,
I have a data in a file in the below format
45783
23457
23556
54584
Now i want to convert this data into the below format
reader='45783' or
reader='23457' or
reader='23556' or
reader='54584'
Please help how to convert as i am applying loop but not able to get the data... (6 Replies)
Discussion started by: jaituteja
6 Replies
8. Shell Programming and Scripting
I have a file containing multiple values, some of them are pipe separated which are to be read as separate values and some of them are single value all are these need to store in variables.
I need to read this file which is an input to my script
Config.txt
file name, first path, second... (7 Replies)
Discussion started by: ketanraut
7 Replies
9. Shell Programming and Scripting
Hi, please help with this, I need to insert missing values into a matrix for a regression analysis.
I have made up an example. The first three columns are variables with levels and the next 3 are values, the 4th column missing values should be replaced by 0s, and 5th and 6th column missing... (3 Replies)
Discussion started by: ritakadm
3 Replies
10. Shell Programming and Scripting
I have 2 files.
Template file:
SELECT
NAME = ""
DEATILS
Input file:
SERVER1 06/05/2016 10:00:00 06/05/2016 05:08:59
SERVER2 06/04/2016 09:50:00 06/05/2016 01:03:59
SERVER3 06/06/2016 11:26:00 06/06/2016 10:31:55
I want to generate the output file that look like this:
... (6 Replies)
Discussion started by: vinus
6 Replies
JOIN(1) BSD General Commands Manual JOIN(1)
NAME
join -- relational database operator
SYNOPSIS
join [-a file_number | -v file_number] [-e string] [-o list] [-t char] [-1 field] [-2 field] file1 file2
DESCRIPTION
The join utility performs an ``equality join'' on the specified files and writes the result to the standard output. The ``join field'' is
the field in each file by which the files are compared. The first field in each line is used by default. There is one line in the output
for each pair of lines in file1 and file2 which have identical join fields. Each output line consists of the join field, the remaining
fields from file1 and then the remaining fields from file2.
The default field separators are tab and space characters. In this case, multiple tabs and spaces count as a single field separator, and
leading tabs and spaces are ignored. The default output field separator is a single space character.
Many of the options use file and field numbers. Both file numbers and field numbers are 1 based, i.e., the first file on the command line is
file number 1 and the first field is field number 1. The following options are available:
-a file_number
In addition to the default output, produce a line for each unpairable line in file file_number.
-e string
Replace empty output fields with string.
-o list
The -o option specifies the fields that will be output from each file for each line with matching join fields. Each element of list
has either the form file_number.field, where file_number is a file number and field is a field number, or the form '0' (zero), repre-
senting the join field. The elements of list must be either comma (',') or whitespace separated. (The latter requires quoting to
protect it from the shell, or, a simpler approach is to use multiple -o options.)
-t char
Use character char as a field delimiter for both input and output. Every occurrence of char in a line is significant.
-v file_number
Do not display the default output, but display a line for each unpairable line in file file_number. The options -v 1 and -v 2 may be
specified at the same time.
-1 field
Join on the field'th field of file1.
-2 field
Join on the field'th field of file2.
When the default field delimiter characters are used, the files to be joined should be ordered in the collating sequence of sort(1), using
the -b option, on the fields on which they are to be joined, otherwise join may not report all field matches. When the field delimiter char-
acters are specified by the -t option, the collating sequence should be the same as sort(1) without the -b option.
If one of the arguments file1 or file2 is '-', the standard input is used.
EXIT STATUS
The join utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
For compatibility with historic versions of join, the following options are available:
-a In addition to the default output, produce a line for each unpairable line in both file1 and file2.
-j1 field
Join on the field'th field of file1.
-j2 field
Join on the field'th field of file2.
-j field
Join on the field'th field of both file1 and file2.
-o list ...
Historical implementations of join permitted multiple arguments to the -o option. These arguments were of the form
file_number.field_number as described for the current -o option. This has obvious difficulties in the presence of files named 1.2.
These options are available only so historic shell scripts do not require modification and should not be used.
SEE ALSO
awk(1), comm(1), paste(1), sort(1), uniq(1)
STANDARDS
The join command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
BSD
July 5, 2004 BSD