On Thu, 24 Jul 2008 12:12:09 -0700, jameshanley39 typed this message:





hi

with what command/commands and how would one list all lines in one file
not in another file?

note- this would be useful were one comparing files in one directory and
not another

btw- are there any command to compare 2 directories.. list files in one
and not the other (I could do that from each directory to list files not
shared by both).

(I refer to files with full relative file path with filename, and not
the file contents itself, and not matching a file in one position of a
directory to a file of the same filename elsewhere in the other
directory.  ).

thanks

You could start with diff

$ man diff
$ info diff

$ diff -y  /folder1  /folder2

$ diff --help-

On Thu, 24 Jul 2008 12:12:09 -0700, jameshanley39 wrote:
hi

with what command/commands and how would one list all lines in one file
not in another file?

note- this would be useful were one comparing files in one directory and
not another

btw- are there any command to compare 2 directories.. list files in one
and not the other (I could do that from each directory to list files not
shared by both).

(I refer to files with full relative file path with filename, and not
the file contents itself, and not matching a file in one position of a
directory to a file of the same filename elsewhere in the other
directory.  ).

The problem (or asset, depends on how you look at it) with Linux/Unix is
the plethora of commands to do almost anything and find that one or few
that want you need to be done.  Start your search with these basic
commands:  diff, find, grep, egrep, fgrep, and gawk.  Familiarize
yourself on the use of "the pipe" symbol '|' with which you can "pipe"
the output from one command to another.  You should also study shell
scripting and a particular shell's built-in commands to automate your
searches and save typing, if you intend to do this a lot.

Stef-

hi

with what command/commands and how would one list all lines in one file
not in another file?

note- this would be useful were one comparing files in one directory and
not another

btw- are there any command to compare 2 directories.. list files in one
and not the other (I could do that from each directory to list files not
shared by both).

(I refer to files with full relative file path with filename, and not
the file contents itself, and not matching a file in one position of a
directory to a file of the same filename elsewhere in the other
directory. ).

hi

with what command/commands and how would one list all lines in one file
not in another file?

note- this would be useful were one comparing files in one directory and
not another

btw- are there any command to compare 2 directories.. list files in one
and not the other (I could do that from each directory to list files not
shared by both).

(I refer to files with full relative file path with filename, and not
the file contents itself, and not matching a file in one position of a
directory to a file of the same filename elsewhere in the other
directory. ).

thanks

hi

with what command/commands and how would one list all lines in one
file not in another file?

jameshanley39 wrote:
hi

with what command/commands and how would one list all lines in one file
not in another file?

If you just want to see the unique lines from the two files:

cat file1 file2 | uniq

- Chris

with what command/commands and how would one list all lines in one file
not in another file?

If you just want to see the unique lines from the two files:
cat file1 file2 | uniq

Yes but you wouldn't know which file contained which line or the sequence
of lines.
diff --suppress-common-lines -y file1 file2

noi ance <noi at (no spam) siam.com> writes:

with what command/commands and how would one list all lines in one
file not in another file?

If you just want to see the unique lines from the two files: cat file1
file2 | uniq

Yes but you wouldn't know which file contained which line or the
sequence of lines.
diff --suppress-common-lines -y file1 file2

I don't believe either of those solutions will work in the general case.

Uniq only detects identical adjacent lines, and cat'ing them together
won't do the job. Diff has the same problem, where only lines in
corresponding identical sections will be detected.

-- HASM

noi ance <noi at (no spam) siam.com> writes:

with what command/commands and how would one list all lines in one file
not in another file?

If you just want to see the unique lines from the two files:
cat file1 file2 | uniq

Yes but you wouldn't know which file contained which line or the sequence
of lines.
diff --suppress-common-lines -y file1 file2

I don't believe either of those solutions will work in the general case.

Uniq only detects identical adjacent lines, and cat'ing them together won't
do the job.

Not so the --suppress-common-lines hides lines occurring in both files,
while -y prints the diff in side by side display.

Isn't that what the OP wanted?

2
1

with what command/commands and how would one list all lines in one file
not in another file?

cat file1 file2 | sort | uniq

But you still wouldn't know which file
contained which line (or in which order the lines were originally).

noi ance <noi at (no spam) siam.com> writes:

Not so the --suppress-common-lines hides lines occurring in both files,
while -y prints the diff in side by side display.

Isn't that what the OP wanted?

Not sure what the OP wanted, but the question was:

with what command/commands and how would one list all lines in one
file not in another file?

If I have two identical files, but with the lines in reverse order,
e.g.:

% cat file1
1
2
3
% cat file2
3
2
1

The answer to the OP question should be an empty set, i.e. there isn't a
single line in file1 that isn't in file2. Running your diff command
yields:

% diff --suppress-common-lines -y file1 file2

1
2
2
1

only picking up one of the lines as common.

-- HASM

noi ance <noi at (no spam) siam.com> writes:

Not so the --suppress-common-lines hides lines occurring in both files,
while -y prints the diff in side by side display.

Isn't that what the OP wanted?

Not sure what the OP wanted, but the question was:

with what command/commands and how would one list all lines in one
file not in another file?

If I have two identical files, but with the lines in reverse order, e.g.:

% cat file1
1
2
3
% cat file2
3
2
1

The answer to the OP question should be an empty set, i.e. there isn't a
single line in file1 that isn't in file2. Running your diff command
yields:

% diff --suppress-common-lines -y file1 file2

1
2
2
1

only picking up one of the lines as common.

Chris Burkhardt <chris at (no spam) mretc.net> writes:

with what command/commands and how would one list all lines in one file
not in another file?

cat file1 file2 | sort | uniq

But you still wouldn't know which file
contained which line (or in which order the lines were originally).

Yup. Not sure it can be done easily only with shell commands. That's why
we have perl.