It looks like you are asking about five different things.
Sentence #1: Use the mv command to rename files.
Sentence #2: I think you mean copy a file use cp
Do you want #1 and #2 as part of the "collect some field". You need to give us exact requirements. Sample of the old file, sample of new file, and file names.
Assume, I created one file three years back and I like to move the file to some other directory with the old date (Creation date)? Is it possible? Explain? (1 Reply)
I am trying to write a script that prompts users for date and time, then process the gzip file into awk. During the ksh part of the script another file is created and needs to be processed with a different set of pattern matches then I need to combine the two in the end. I'm stuck at the part... (6 Replies)
I am using ksh93 on Solaris.
Ok, this may seem like a simple request at first. I have a directory that contains sets of files with a YYYYMMDD component to the name, along with other files of different filespecs. something like this:
20110501_1.dat
20110501_2.dat
20110501_3.dat... (2 Replies)
Hi guys,
I have a variable where i am storing the filename (with full path).
I just need the value before ".txt". But instead of getting the filename i am getting the contents of the filename.
FileName=/appl/data/Input/US/Test.txt
a=`awk -F"." '{print $1}' ${FileName}`
echo $a... (3 Replies)
Hi
i want to list files based on date and change the date alone in the files in a directory
abc20120101.txt
xyzxyxz20120101.txt
ccc20120201.txt
ddd20120301.txt
In the above i want to select only files having date 20120101 and rename the date for those files like below
abc20111231.txt... (3 Replies)
I have 100 files in a directory , all the files have a word "error" and they are created in different date . Now I would like to change the word from "error" to "warning" , and keep the date of the files ( that means do not change the file creation date after change the word ) , can advise what can... (0 Replies)
I have 100 files in a directory , all the files have a word "error" and they are created in different date . Now I would like to change the word from "error" to "warning" , and keep the date of the files ( that means do not change the file creation date after change the word ) , can advise what can... (7 Replies)
Hello,
I'd like to write a monthly archive script that archives some logs. But I'd like to do it based on yesterday's date. In other words, I'd like to schedule the script to run on the 1st day of each month, but have the archive filename include the previous month instead.
Here's what I... (5 Replies)
Suppose i have a list of files in a directory as mentioned below
1. Shankar_04152019_ny.txt
2. Gopi_shan_03122019_mi.txt
3. Siva_mourya_02242019_nd.txt
..
.
.
.
.
1000 . Jiva_surya_02282019_nd.txt
query : At one shot i want to modify the above all filenames present in one path with... (4 Replies)
Discussion started by: Shankar455
4 Replies
LEARN ABOUT DEBIAN
io::atomicfile
IO::AtomicFile(3pm) User Contributed Perl Documentation IO::AtomicFile(3pm)NAME
IO::AtomicFile - write a file which is updated atomically
SYNOPSIS
use IO::AtomicFile;
### Write a temp file, and have it install itself when closed:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->close || die "couldn't install atomic file: $!";
### Write a temp file, but delete it before it gets installed:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->delete;
### Write a temp file, but neither install it nor delete it:
my $FH = IO::AtomicFile->open("bar.dat", "w");
print $FH "Hello!
";
$FH->detach;
DESCRIPTION
This module is intended for people who need to update files reliably in the face of unexpected program termination.
For example, you generally don't want to be halfway in the middle of writing /etc/passwd and have your program terminate! Even the act of
writing a single scalar to a filehandle is not atomic.
But this module gives you true atomic updates, via rename(). When you open a file /foo/bar.dat via this module, you are actually opening a
temporary file /foo/bar.dat..TMP, and writing your output there. The act of closing this file (either explicitly via close(), or
implicitly via the destruction of the object) will cause rename() to be called... therefore, from the point of view of the outside world,
the file's contents are updated in a single time quantum.
To ensure that problems do not go undetected, the "close" method done by the destructor will raise a fatal exception if the rename() fails.
The explicit close() just returns undef.
You can also decide at any point to trash the file you've been building.
AUTHOR
Primary Maintainer
David F. Skoll (dfs@roaringpenguin.com).
Original Author
Eryq (eryq@zeegee.com). President, ZeeGee Software Inc (http://www.zeegee.com).
REVISION
$Revision: 1.2 $
perl v5.12.4 2011-09-18 IO::AtomicFile(3pm)