I have searched about 30 threads, a load of Google pages and cannot find what I am looking for. I have some of the parts but not the whole. I cannot seem to get the puzzle fit together.
I have three folders, two of which contain different versions of multiple files, dist/file1.php dist/file2.php... (4 Replies)
Hello there, I'm a total noob to shell scripting. :)
What I want to do is compare the contents of Folder A and Folder B, and copy any files in Folder A that do not exist in Folder B over to Folder B.
I have gotten so far as:
diff -rq folderA folderB
which returns the names of the files,... (3 Replies)
Hello,
I am new to scripting and have been trying to compare two different directories, but with all the same file names in each directory for file changes. I have been doing it in baby steps and have been doing pretty good, but I have hit a few snags. Test 1 and Test 2 work great, but my... (4 Replies)
Hi experts,
I'mvery new to shell scripting and learning it now
currently i am having a problem which may look easy to u :)
i have two files
File 1:
Start :Thu Nov 19 10:33:09 2009
ABCDGFSDJ.txt
APDemoNew.ppt
APDemoOutline.doc
ARDemoNew.ppt
ARDemoOutline.doc
File 2:
Start... (10 Replies)
I have several directories and all those directories have .dat files in them. I want to copy all those .dat files to one directory say "collected_directory"
The problem is I don't want to overwrite files. So, if two file names match, I don't want the old file to be overwritten with a new one.
... (1 Reply)
Beginner/Intermediate shell; comfortable in the command line.
I have been looking for a solution to a backup problem. I need to compare Directory 1 to Directory 2 and copy all modified or new files/directories from Directory 1 to Directory 3. I need the directory and file structure to be... (4 Replies)
Hello everybody
Looking for help in comparing two files in Linux(files are big 800MB each).
Example:-
File1 has below data
$ cat file1
5,6,3
2.1.4
1,1,1
8,9,1
File2 has below data
$ cat file2
5,6,3
8,9,8
1,2,1
2,1,4 (1 Reply)
Hello everybody
Looking for help in comparing two files in Linux(files are big 800MB each).
Example:-
File1 has below data
$ cat file1
5,6,3
2.1.4
1,1,1
8,9,1
File2 has below data
$ cat file2
5,6,3
8,9,8
1,2,1
2,1,4 (8 Replies)
Dear all
I have a multiple directories, say for example org1, org2, org3 ..... org100 and each directory having a file namely dnaG.fasta. I need to copy all the dnaG.fasta file from each directory and paste in another directory fastconcatg. Therefore, my script has to copy dnaG.fasta file from... (5 Replies)
Discussion started by: dineshkumarsrk
5 Replies
LEARN ABOUT PLAN9
diff
DIFF(1) General Commands Manual DIFF(1)NAME
diff - differential file comparator
SYNOPSIS
diff [ -efbwr ] file1 ... file2
DESCRIPTION
Diff tells what lines must be changed in two files to bring them into agreement. If one file is a directory, then a file in that directory
with basename the same as that of the other file is used. If both files are directories, similarly named files in the two directories are
compared by the method of diff for text files and cmp(1) otherwise. If more than two file names are given, then each argument is compared
to the last argument as above. The -r option causes diff to process similarly named subdirectories recursively. The normal output con-
tains lines of these forms:
n1 a n3,n4
n1,n2 d n3
n1,n2 c n3,n4
These lines resemble ed commands to convert file1 into file2. The numbers after the letters pertain to file2. In fact, by exchanging `a'
for `d' and reading backward one may ascertain equally how to convert file2 into file1. As in ed, identical pairs where n1 = n2 or n3 = n4
are abbreviated as a single number.
Following each of these lines come all the lines that are affected in the first file flagged by `<', then all the lines that are affected
in the second file flagged by `>'.
The -b option causes trailing blanks (spaces and tabs) to be ignored and other strings of blanks to compare equal. The -w option causes
all white-space to be removed from input lines before applying the difference algorithm.
The -e option produces a script of a, c and d commands for the editor ed, which will recreate file2 from file1. The -f option produces a
similar script, not useful with ed, in the opposite order. It may, however, be useful as input to a stream-oriented post-processor.
Except in rare circumstances, diff finds a smallest sufficient set of file differences.
FILES
/tmp/diff[12]
SOURCE
/sys/src/cmd/diff
SEE ALSO cmp(1), ed(1)DIAGNOSTICS
Exit status is the empty string for no differences, for some, and for trouble.
BUGS
Editing scripts produced under the -e or -f option are naive about creating lines consisting of a single `.'.
When running diff on directories, the notion of what is a text file is open to debate.
DIFF(1)