awk is a good tool to work with individual fields, as in your case.
Please see below:
If you are not familiar with awk, here are few hints so you can make it work for your specifics. the -F '|' tells awk to use pipe as field delimiter, the $3 is third field, the $0 is whole line
I have tried to show the file name whose size is greater than 200 byte in current directory.
Please help me.
ls -l | tr -s " " " " | cut -f 5,9 -d " " >out.txt
#set -a x `cat out.txt`
i=0
`cat out.txt` | while
do
read x
echo $x
#re=200
j=0
if }" < "200" ]
then
echo $j
j=`expr $j... (2 Replies)
Is there any way to write to a text file with scripting? I need to write to a text file two lines of text for the amount of files in the current directory. (9 Replies)
Hi,
We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the... (1 Reply)
Hi,
Can anyone please help me with this issue.
I have a Awk command which take file as input, and provides the output having multiple lines, its working in command mode, but not if i plug it in script.
#!/bin/ksh
infile=a.txt
outfile=b.txt
awk '
BEGIN{
FS=OFS="|";ORS = "\n";... (1 Reply)
hello world, i was looking for exemples for writing ans reading in / from a file, more exactly a text file; and how i'm only at very beagining, if anyone have some exemples very simple, very 'classic' , -with explications- and not hard to undersand . i was wondering that some of you are theacher... (6 Replies)
Hey guyz,
I have a table like this:
1 A=#;B=#;C=#
2 A=#;C=#;D=#;E=#;E=#
3 B=#;B=#;B=#;D=#
# are just some numbers. I want to have the output like this:
* 1 2 3
A # # NA
B # NA #
C # # NA
D NA # #
E NA # NA
So basically, I wanna know in each of the rows in my input (which... (9 Replies)
I have got a file in following format:
AAAAAAA
BBBBBBBB
CCCCCCC
DDDDDDD
I am trying to read this file and out put it in following format:
AAAAAAA,BBBBBBB,CCCCCCC,DDDDDD
Preferred method is shell or Perl.
Any help appreciated. (11 Replies)
Hello Guys, How all are doing?
I have an issue in Unix and want help from all of you
I have a file in UNIX which it read by line by line , If at the end of line '0' is written the it should fetch that line into another file and change '0' to '1'
and If at the end of line '1' is written then it... (10 Replies)
Hello,
How can I use a conditional to produce an output file that varies with respect to the contents of column #4 in the data file:
Data file:
9780020080954 9.95 0.49 AS 23.3729
9780020130857 9.95 0.49 AS 23.3729
9780023001406 22.20 0.25 AOD ... (12 Replies)
Hi All
Please Help
Read input write multply output with creteria
Exemple i have file
abc 111 444
abc 111 444
def 111 444
def111 444
bbb 111 444
bbb 111 444
i would need write 3 files pos 1-3 is the Criteria
output would be file1 contains abc file2 def file3 bbb
... (3 Replies)
Discussion started by: tonyk334
3 Replies
LEARN ABOUT FREEBSD
join
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