How can i delete the contents of one file based on another file
Hi all,
I have two log files A and B. Where files A have 10 lines and file b has 5 lines.
Out of them 3 lines are common to both of them. I want to compare both the files and want to delete the common data from file A(file B should remain as it is)
Hi All,
Im having a file named logserver.txt. I want a perl script to take a backup of that file, along with the datestamp; move the file to a different location or empty the contents of the file after backup.
Remember, the file gets generated when the related service starts. My condition is... (14 Replies)
So, this issue is driving me nuts! I was hoping to get a lending hand here...
I have 2 files:
file1.txt contains:
this is example1
this is example2
this is example3
this is example4
this is example5
file2.txt contains:
example3
example5
Basically, I need a script or command to... (4 Replies)
Hi all
I currently use the following in shell.
#!/bin/sh
while read LINE
do
perl -i -ne "$/ = ''; print if !m'Using archive: ${LINE}'ms;" "datafile"
done < "listfile"
NOTE the single quote delimiters in the expression. It's highly likely the 'LINE' may very well have characters in it... (3 Replies)
Give shell script....which takes two file names as input and compares the contents, is both are same delete second file's contents.....
I try with "diff"...... but confusion how to use "diff" with if ---else
Thanking you (5 Replies)
Hello,
I have two files as shown below:
test1
678
679
689
690
710
test2
1 678
654 800
676 791
689 900
I want to get a count of lines from test2 whose columns bound the values in test1
I tried running the code below; however am getting wrong results. (3 Replies)
Hi,
I want to delete the contents of a file which are matching with contents of other file in shell scripting.
Ex.
file1
sheel,sumit,1,2,3,4,5,6,7,8
sumit,rana,2,3,4,5,6,7,8,9
grade,pass,2,3,4,5,6,232,1,1
name,sur,33,1,4,12,3,5,6,8
sheel,pass,2,3,4,5,6,232,1,1
File2... (3 Replies)
Hello,
I have a file with tab delimited columns like:
File1
A 2 C R
F 4 D Q
C 9 A B
......
I want to grep out the lines in a second file, File2, corresponding to each line in File1
Can I do this:
while read a b c d
do
grep '$a\t$b\t$c\t$d' File2 >>... (2 Replies)
Hi
I have 2 files
1.del
----
1,2,3,4,5
1,2,3,4,4
1,1,1,1,2
2.del
----
1,2,3,4,5
1,
1,2,3,4,4
1,1,1,1,2
I need to compare the above two files in unix, as in the output should only tell the difference in contents as I should get only the line
1 ( from 2.del) , rest all lines are... (4 Replies)
I am trying to use the two files shown below to either remove or rename contents in one of those files. If in file1.txt $5 matches $5 of file2.txt and the value in $1 of file1.txt is not "No Match" then that value is substituted for all values in $5 and $1 of file2.txt. If however in $1 ... (5 Replies)
Discussion started by: cmccabe
5 Replies
LEARN ABOUT REDHAT
diff3
DIFF3(1) GNU Tools DIFF3(1)NAME
diff3 - find differences between three files
SYNOPSIS
diff3 [options] mine older yours
DESCRIPTION
The diff3 command compares three files and outputs descriptions of their differences.
The files to compare are mine, older, and yours. At most one of these three file names may be -, which tells diff3 to read the standard
input for that file.
Options
Below is a summary of all of the options that GNU diff3 accepts. Multiple single letter options (unless they take an argument) can be com-
bined into a single command line argument.
-a Treat all files as text and compare them line-by-line, even if they do not appear to be text.
-A Incorporate all changes from older to yours into mine, surrounding all conflicts with bracket lines.
-B Old behavior of -A. Shows non-conflicts.
-e Generate an ed script that incorporates all the changes from older to yours into mine.
-E Like -e, except bracket lines from overlapping changes' first and third files. With -e, an overlapping change looks like this:
<<<<<<< mine
lines from mine
=======
lines from yours
>>>>>>> yours
--ed Generate an ed script that incorporates all the changes from older to yours into mine.
--easy-only
Like -e, except output only the nonoverlapping changes.
-i Generate w and q commands at the end of the ed script for System V compatibility. This option must be combined with one of the
-AeExX3 options, and may not be combined with -m.
--initial-tab
Output a tab rather than two spaces before the text of a line in normal format. This causes the alignment of tabs in the line to
look normal.
-L label
--label=label
Use the label label for the brackets output by the -A, -E and -X options. This option may be given up to three times, one for each
input file. The default labels are the names of the input files. Thus diff3 -L X -L Y -L Z -m A B C acts like diff3 -m A B C ,
except that the output looks like it came from files named X, Y and Z rather than from files named A, B and C.
-m
--merge
Apply the edit script to the first file and send the result to standard output. Unlike piping the output from diff3 to ed, this
works even for binary files and incomplete lines. -A is assumed if no edit script option is specified.
--overlap-only
Like -e, except output only the overlapping changes.
--show-all
Incorporate all unmerged changes from older to yours into mine, surrounding all overlapping changes with bracket lines.
--show-overlap
Like -e, except bracket lines from overlapping changes' first and third files.
-T Output a tab rather than two spaces before the text of a line in normal format. This causes the alignment of tabs in the line to
look normal.
--text Treat all files as text and compare them line-by-line, even if they do not appear to be text.
-v
--version
Output the version number of diff3.
-x Like -e, except output only the overlapping changes.
-X Like -E, except output only the overlapping changes. In other words, like -x, except bracket changes as in -E.
-3 Like -e, except output only the nonoverlapping changes.
SEE ALSO cmp(1), comm(1), diff(1), ed(1), patch(1), sdiff(1).
DIAGNOSTICS
An exit status of 0 means diff3 was successful, 1 means some conflicts were found, and 2 means trouble.
GNU Tools 22sep1993 DIFF3(1)