will this command displays only the changed data can you please explain.
when I run this command it is displaying same file with the data.
Thanks
Quote:
Originally Posted by radoulov
Code:
awk '
# If NR==FNR this is the first file, so get rid of
#+ the "(",")","-"," " characters ("gsub" is global substitution),
#+ and populate the x array: x[$0].
NR==FNR{gsub(/[ \(\)-]/,"");x[$0];next}
# Otherwise, it's the second file, so
#+ remove the spaces. Now we have
#+ the right formating.
{gsub(/ /,"")}
# If the current record is not
#+ previously stored in the x array,
#+ print it (default action).
!($0 in x)' file1 file2
Hi,
I am trying to get an ouput of certain fields from a file:
awk '{ print $NF }' portfile
8087
8047
localhost:1117
Now i need to take this output and see if it exists in netstat -a command. How do i check that.
Thanks,
Gundu (3 Replies)
I am new to unix and need to learn how to compare a variable $subject to a string pattern. If the variable has the word "Item" in it then it should be true. How do I do this? Currently I am using the Bourne shell but I can also use Korn or Bash.
I come from a Rexx background where strings are... (2 Replies)
Hi everybody.
I have this comand "/usr/local/check_procs myprocess" which prints "OK: myprocess running" on my console if the process is running and "myprocess not running" if it is not.
I am writing a bash script to check if the process is running but am getting an error.
Here is my... (3 Replies)
Hi,
I have a variable with value tmp2=123.45.175.243, I am taking this value from a network file.
In the script I need to check whether the variable has only numerals and .(dot).
if ..." ]
then
printf "SUCCESS\n"
else
printf "FAILED\n"
fi
doesnt work, is there a alternate... (1 Reply)
Hi i have a bash script which calls a PHP script (comparison_cron.php).
The php script prints the string "no_data_to_retrieve" without quotes.
Why does the following bash script not leave the while loop?
#!/bin/bash
cronOutput=$(php /srv/www/vhosts/xyz/httpdocs/comparison_cron.php)... (2 Replies)
Hi,
I have file like below,
Srinivas Jala Srinivas Jala AA
Srikanth ML Srikanth ML KK
Vijay Kumar Dha Vijay Kumar Dha JJ
i want to compare like "Srinivas Jala" word in same line, if i found i shoud get some like found, or not found. Pls help to get the code. (3 Replies)
Dear all
Would anyone tell me how to prevent user from input non asterisk(i.e. *) character via keyboard?
#!/bin/ksh
targetHour=-1
while ]
do
echo "Please input target hour":
read targetHour
done
When I execute the above coding, and then input a "j", it return the following... (3 Replies)
I have below code inside my awk script
if ( $0 ~ /SVC IN:/ )
{
svc_in=substr( $0,23 , 3);
if (msg_start == 1 && msg_end == 0)
{
msg_arr=$0;
}
}
else if ( $0 ~ /^SVC OUT:/ )
{
svc_out=substr( $0, 9, 3);
if (msg_start == 1 && msg_end == 0)
... (6 Replies)
Discussion started by: bhagya123
6 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)
01-29-2007
