08-08-2012
ed is a (text-) file editor (-> man ed), and diff -e is designed to output ed compatible command lines but excluding the final w(rite) command, not to overwrite the file it's working upon. So what we do is create (diff -e + echo w) and execute (ed) the commands in a pipe | to make file1 into file2. If you need to see the deleted records, you might want to execute diff twice - once for the records, once to execute the changes with ed.
This User Gave Thanks to RudiC For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi
I need to compare shadow file sizes with their real file counterparts. If the shadow file size differs form the realfile size then it must send a mail. My problem is that our system has over 1600 shadowfiles in different directories, with different names. the only consistancy is the .sh file... (4 Replies)
Discussion started by: terrym
4 Replies
2. Shell Programming and Scripting
I have a file called X, which contains the following:
10
100
200
300
I then have file Y, which containts the following:
10
200
500
800
I want to write a script that will compare the contents of Y with the contents of X and ONLY return values in Y that does not exist in X (output... (5 Replies)
Discussion started by: soliberus
5 Replies
3. Shell Programming and Scripting
I really need help on creating a script that does the following:
I have one file (File 1) with lines in the following format:
Name.maf score1 score2
I have a second file (File 2) with lines in the following format:
label start end Name
What I need to do is compare File 1 and... (1 Reply)
Discussion started by: awknerd
1 Replies
4. Shell Programming and Scripting
So I have two files:
File1
pictures.txt 1.1 1.3
dance.txt 1.2 1.4
treehouse.txt 1.3 1.5
File2
pictures.txt 1.5 ref2313 1.4 ref2345 1.3 ref5432 1.2 ref4244
dance.txt 1.6 ref2342 1.5 ref2352 1.4 ref0695 1.3 ref5738 1.2 ref4948 1.1
treehouse.txt 1.6 ref8573 1.5 ref3284 1.4 ref5838... (24 Replies)
Discussion started by: linuxkid
24 Replies
5. UNIX for Dummies Questions & Answers
HI ALL,
i have two files each with three columns.
i need to compare the row in file 1 is present in file 2 using FOR loop.
Please Help.
Thanks in Advance
Regards,
Arun Manas (1 Reply)
Discussion started by: arunmanas
1 Replies
6. Shell Programming and Scripting
I've two files with data like below:
file1.txt:
AAA,Apples,123
BBB,Bananas,124
CCC,Carrot,125
file2.txt:
Store1|AAA|123|11
Store2|BBB|124|23
Store3|CCC|125|57
Store4|DDD|126|38
So,the field separator in file1.txt is a comma and in file2.txt,it is |
Now,the output should be... (2 Replies)
Discussion started by: asyed
2 Replies
7. UNIX for Advanced & Expert Users
Hi Guys ,
we have one directory ...in that directory all files will be set on each day..
files must have header ,contents ,footer..
i wants to compare the header,contents,footer ..if its same means display an error message as 'files contents same' (7 Replies)
Discussion started by: Venkatesh1
7 Replies
8. Shell Programming and Scripting
Hi all
I have to compare two file this time
one is
P11223
x1124
x1145
t5678
e3456
z2345
another file
P11223 x s (2 Replies)
Discussion started by: manigrover
2 Replies
9. Shell Programming and Scripting
I hope I can explain this correctly. I am using Bash-4.2 for my shell.
I have a group of file names held in an array. I want to compare the names in this array against the names of files currently present in a directory. If the file does not exist in the directory, that is not a problem.... (5 Replies)
Discussion started by: BudMan
5 Replies
10. UNIX for Beginners Questions & Answers
I have two file as given below which shows the ACL permissions of each file. I need to compare the source file with target file and list down the difference as specified below in required output. Can someone help me on this ?
Source File
*************
# file: /local/test_1
# owner: own
#... (4 Replies)
Discussion started by: sarathy_a35
4 Replies
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)