What's the contents of ${FIELD[1]}? How did you define it?
The script begins by reading a file and looking for duplicate values in a specific column. These are retrieved by,
so the file is sorted on column 2 and uniq ignores the first column.
For the above data the output would be,
Then I iterate over the array to parse the lines and capture individual names,
When I echo $current_name I get the correct value but it doesn't work with the sed command I posted.
The following seems quite basic but does not seem to work. Anybody know why?
$ g=1
$ echo $g
1
$ echo abc$g
abc1
$ abc$g=hello
ksh: abc1=hello: not found
$ echo $abc1
ksh: abc1: parameter not set
It works when I specify the full variable name
$ abc1=hello
$ echo $abc1
hello
... (2 Replies)
I am trying to write a simple script which will take a variable with sed to take a line out of a text and display it
#!/bin/sh
exec 3<list
while read list<&3
do
echo $list
sed -n '$list p'<list2
done
this does not work, yet when I replace the $list variable from the sed command and... (1 Reply)
Hi....
cd command is not working when dual string drive/volume name is passed to cd through variables.......
For Ex....
y=/Volumes/Backup\ vipin/
cd $y
the above command gives error.......
anyone with a genuine solution ? (16 Replies)
GNU sed version 4.1.4 on Windows XP SP3 from GnuWin32
I think that I've come across a seemingly simple text file change problem on a INI formatted file that I can't do with SED without side effects edge cases biting me. I've tried to think of various ways of doing this elegantly and quickly... (5 Replies)
I am writing a script with a sed call that needs to use a variable and still have quotations be present in the substitution.
Example:
sed -i "s/Replacable.\+$/Replaced="root@$VAR"/g"
this outputs:
where $VAR = place
Replaced=root@place
and i need
Replaced="root@place"
... (2 Replies)
...
declare vINIFILE
vINIFILE=$1
...
echo "The name of the File is $vINIFILE" >>mail_tmp
echo "" >> mail_tmp.$$
...
grep RUNJOB=0 $vINIFILE >>tmp_filter
...
So the strange is in echo-statement I get the correct output for $vINIFILE wrtitten into the file mail_tmp. But the... (2 Replies)
I am writing perl script to configure Cisco device but Variables inside Net::Telnet::Cisco Module doesn't work and passed to device without resolving.
Please advise.
here is a sample of script:
use Net::Telnet::Cisco;
$device = "10.14.199.1";
($o1, $o2, $o3, $o4) = split(/\./,$device);... (5 Replies)
$ x="/home/guru/temp/f1.txt"
$ echo $x | sed 's^.*/^^'
This will give the absolute path f1.txt. I don't understand WHY it works. How is it determining the last "/" character exactly? (7 Replies)
Hello!
I have a problem to insert variables with sed... And I can't find the solution. :confused:
I would like to display one/few line(s) between 2 values.
This line works well
sed -n '/Dec 12 10:42/,/Dec 12 10:47/p'
Thoses lines with variables doesn't work and I don't find the... (2 Replies)
Bash version 4.4.20 / Ubuntu 16.0.4
Hello,
I tried to write a script that gathers some data and passes them to an executable.
The executed application answers with an error. The echo output in the script returns correct values.
If I copy/paste the last echo command, it get's executed... (2 Replies)
Discussion started by: sushi2k7
2 Replies
LEARN ABOUT LINUX
join
JOIN(1) User Commands JOIN(1)NAME
join - join lines of two files on a common field
SYNOPSIS
join [OPTION]... FILE1 FILE2
DESCRIPTION
For each pair of input lines with identical join fields, write a line to standard output. The default join field is the first, delimited
by whitespace. When FILE1 or FILE2 (not both) is -, read standard input.
-a FILENUM
print unpairable lines coming from file FILENUM, where FILENUM is 1 or 2, corresponding to FILE1 or FILE2
-e EMPTY
replace missing input fields with EMPTY
-i, --ignore-case
ignore differences in case when comparing fields
-j FIELD
equivalent to `-1 FIELD -2 FIELD'
-o FORMAT
obey FORMAT while constructing output line
-t CHAR
use CHAR as input and output field separator
-v FILENUM
like -a FILENUM, but suppress joined output lines
-1 FIELD
join on this FIELD of file 1
-2 FIELD
join on this FIELD of file 2
--check-order
check that the input is correctly sorted, even if all input lines are pairable
--nocheck-order
do not check that the input is correctly sorted
--header
treat the first line in each file as field headers, print them without trying to pair them
--help display this help and exit
--version
output version information and exit
Unless -t CHAR is given, leading blanks separate fields and are ignored, else fields are separated by CHAR. Any FIELD is a field number
counted from 1. FORMAT is one or more comma or blank separated specifications, each being `FILENUM.FIELD' or `0'. Default FORMAT outputs
the join field, the remaining fields from FILE1, the remaining fields from FILE2, all separated by CHAR.
Important: FILE1 and FILE2 must be sorted on the join fields. E.g., use ` sort -k 1b,1 ' if `join' has no options, or use ` join -t '' '
if `sort' has no options. Note, comparisons honor the rules specified by `LC_COLLATE'. If the input is not sorted and some lines cannot
be joined, a warning message will be given.
AUTHOR
Written by Mike Haertel.
REPORTING BUGS
Report join bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report join translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO comm(1), uniq(1)
The full documentation for join is maintained as a Texinfo manual. If the info and join programs are properly installed at your site, the
command
info coreutils 'join invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 JOIN(1)