As long as a mv operation is performed on the same file system -
.
.
.
Even if the file is moved between file systems, there should not be a problem as long as the file is kept open. Even though the file and it's contents ARE moved by the mv command, the OS keeps the file readable until it is closed and unlinked. See below, using nezabudka's one liner extended by mv's -v (--verbose) option
and the respective lsof output (before and after (but before file closing) the mv operation) :
Even though attributed "deleted", the file's contents is still available and readable. Of course, once unlinked, the file can't be reopened / reused in its original location.
I am on a HP-UX machine I have a directory called "/u01/blobs" and the files look like this:
ls -1
7398
7399
7400
I need to produce a comma delimited file with the following format:
filename,location/filename
i.e:
7398,/u01/blobs/7398
7399,/u01/blobs/7399
7400,/u01/blobs/7400
What... (3 Replies)
Hello guys, thank God that I found this forum.
I hope that someone can help me because I don't have any idea on how to start it. I know that for some of you this is a very simple task but I'm not as advance on shell scripting like many people out there.
I got this file with a permanent... (10 Replies)
Hello all.
I am new to this forum (and somewhat new to UNIX / LINUX - I started using ubuntu 1 year ago).:b:
I have the following problem that I have not been able to figure out how to take care of and I was wondering if anyone could help me out.:confused:
I have all of my music stored in... (7 Replies)
Hi guys, I am a newbie here :wall:
I need a script that can search for a file in a directory and copy the contents of that file in a new file.
Please help me. :confused: Thanks in advance~ (6 Replies)
I hope some one can help me
I have multiple files in a directory with out extension like as below mentioned. But i want to change all the file names along .DDMMYYYYHHMISS format. And all files should have same DDMMYYYYHHMISS.
Scenario:
direcory name = /vol/best/srcfiles
files in a... (4 Replies)
I have to write a script to rename the every last sub-directory in a directory structure if the last sub-directory name doesn't contain "submitted".
eg:
given directory path:/u01/home/somedir
somedir can have many subdirectories and each subdirectory inturn has many subdirectories.
somedir... (3 Replies)
Hello All,
Can you help me in writing a script for reading the specific position data in a file and if that data found in that file that particular file should be renamed.
Ex: Folder : C:\\test
and Filename : CLSACK_112214.txt,CLSACK_112314.txt,CLSACK_112414.txt
Contents in the file would... (3 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)
I have a specific set (all ending with .bam) of downloaded files in a directory /home/cmccabe/Desktop/NGS/API/2-15-2016. What I am trying to do is use a match to $2 in name to rename the downloaded files. To make things a more involved the date of the folder is unique and in the header of name... (1 Reply)
Hi All,
Just started learning unix and stuck into below issue.
Suppose i have folder structure as below.
Dir1/Dir2/Dir3/File1.msg
I am looking to rename the file name from File1.msg to File2.msg but from the parent Dir1
From Dir3 i can easily run the command like
mv File1.msg... (2 Replies)
Discussion started by: Gurjeet Singh
2 Replies
LEARN ABOUT V7
diff
DIFF(1) General Commands Manual DIFF(1)NAME
diff - differential file comparator
SYNOPSIS
diff [ -efbh ] file1 file2
DESCRIPTION
Diff tells what lines must be changed in two files to bring them into agreement. If file1 (file2) is `-', the standard input is used. If
file1 (file2) is a directory, then a file in that directory whose file-name is the same as the file-name of file2 (file1) is used. The
normal output contains 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 -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. In connection with -e, the following shell program may help maintain multiple
versions of a file. Only an ancestral file ($1) and a chain of version-to-version ed scripts ($2,$3,...) made by diff need be on hand. A
`latest version' appears on the standard output.
(shift; cat $*; echo '1,$p') | ed - $1
Except in rare circumstances, diff finds a smallest sufficient set of file differences.
Option -h does a fast, half-hearted job. It works only when changed stretches are short and well separated, but does work on files of
unlimited length. Options -e and -f are unavailable with -h.
FILES
/tmp/d?????
/usr/lib/diffh for -h
SEE ALSO cmp(1), comm(1), ed(1)DIAGNOSTICS
Exit status is 0 for no differences, 1 for some, 2 for trouble.
BUGS
Editing scripts produced under the -e or -f option are naive about creating lines consisting of a single `.'.
DIFF(1)