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Top Forums UNIX for Beginners Questions & Answers Read two file and compare the line Post 303040878 by Abdellah on Friday 8th of November 2019 05:43:12 AM
Old 11-08-2019
Read two file and compare the line

Hello Guys
I need to read and compare two file, one file contains hostname, and others contain hostname and IP@,
and the objective is to read each file and compare if line in file1 equal to first word in the second file2

file1
Quote:
host1
host2
host3
file2
Quote:
host1 IN A 10.10.105.2
host2 IN A 10.10.104.2
host8 IN A 10.10.12.8
host5 IN A 10.10.18.9
this is my first code

Code:
fqdn_hosts=list.txt
named_hosts=infra.hosts

for line in `cat $fqdn_hosts`
do
        for line2 in `cat $named_hosts`
        do
                if $line -eq $line2 | awk -F: '{print $1}'
                then
                        echo $line   '$line2 | awk -F: '{print $4}''
                fi
        done
done

can you help me, please
 

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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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