I need a KSH script that will check a host file for duplicate IP's and/or host names and report out the errors. Anyone out there have one they would like to share?
Something like:
Hostname blahblah appears X times
IP Address xxx.xxx.xxx.xxx appears X times
TIA (4 Replies)
I have a file which consists of 1000 entries. Out of 1000 entries i have 500 Duplicate Entires. I want to remove the first Duplicate Entry (i,e entire Line) in the File.
The example of the File is shown below:
8244100010143276|MARISOL CARO||MORALES|HSD768|CARR 430 KM 1.7 ... (1 Reply)
Hi All,
I have one problem related to /.rhosts file.
According to my understanding, /.rhosts file is used for "rsh". What will happen if I have duplicate entries in this file?
e.g> my .rhosts file looks like
Code:
wcars42g
wcars89j
wcars42g
wcars42b
wcars42b
Will duplicate entries... (1 Reply)
Hi,
I forgot how to start a new thread. :(
Can somebody please guide me?
I have one problem related to /.rhosts file.
According to my understanding, /.rhosts file is used for "rsh". What will happen if I have duplicate entries in this file?
e.g> my .rhosts file looks like
wcars42g... (2 Replies)
hi
if i have arry with lots of intergers , how to check if there is duplicate integers
in perl ?
say I ahve @intergers=( 1,2,3,3,4,5,4,99,99,100) (2 Replies)
Hi,
I have a very big (with around 1 million entries) txt file with IPv4 addresses in the standard format, i.e. a.b.c.d
The file looks like
10.1.1.1
10.1.1.1
10.1.1.1
10.1.2.4
10.1.2.4
12.1.5.6
.
.
.
.
and so on....
There are duplicate/multiple entries for some IP... (3 Replies)
Hello experts,
I have a requirement where I have to implement two checks on a csv file:
1. Check to see if the value in first column is duplicate, if any value is duplicate script should exit.
2. Check to verify if the value at second column is between "yes" or "no", if it is anything else... (4 Replies)
Hi,
How do I check how old a file is? That is, is it 1 day old, 1 year old, generated x hours ago?
Currently, I receive a supposed to be daily report and in the last few times, it has not been recent, that is instead of the one generated for the day, it is one that was created yesterday or... (3 Replies)
Discussion started by: newbie_01
3 Replies
LEARN ABOUT OPENDARWIN
uniq
UNIQ(1) BSD General Commands Manual UNIQ(1)NAME
uniq -- report or filter out repeated lines in a file
SYNOPSIS
uniq [-c | -d | -u] [-i] [-f num] [-s chars] [input_file [output_file]]
DESCRIPTION
The uniq utility reads the specified input_file comparing adjacent lines, and writes a copy of each unique input line to the output_file. If
input_file is a single dash ('-') or absent, the standard input is read. If output_file is absent, standard output is used for output. The
second and succeeding copies of identical adjacent input lines are not written. Repeated lines in the input will not be detected if they are
not adjacent, so it may be necessary to sort the files first.
The following options are available:
-c Precede each output line with the count of the number of times the line occurred in the input, followed by a single space.
-d Only output lines that are repeated in the input.
-f num Ignore the first num fields in each input line when doing comparisons. A field is a string of non-blank characters separated from
adjacent fields by blanks. Field numbers are one based, i.e. the first field is field one.
-s chars
Ignore the first chars characters in each input line when doing comparisons. If specified in conjunction with the -f option, the
first chars characters after the first num fields will be ignored. Character numbers are one based, i.e. the first character is
character one.
-u Only output lines that are not repeated in the input.
-i Case insensitive comparison of lines.
DIAGNOSTICS
The uniq utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The historic +number and -number options have been deprecated but are still supported in this implementation.
SEE ALSO sort(1)STANDARDS
The uniq utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD June 6, 1993 BSD