You need to be very fast to not copy your file - the -u, --update option, copies "only when the SOURCE file is newer than the destination file or when the destination file is missing". You'd need to copy twice within a minute to hit a file with the same name older than your actual one.
Yes, the test utility operator -nt stands for newer than. If you check the man page for the test utility on your system or look for the term "conditional expression" on the man page for your shell, you'll find lots of useful tests that can be performed in your shell scripts. (Note that "conditional expression" might be all lowercase, all uppercase, or have the first letter of each word capitalized depending on which shell's man page you're reading.)
Most of the operators that are available with the [[ command (if your shell has a [[ command) are also available with the test utility invoked with:
or with:
The test and [ utilities are available with all Bourne shell derived shells.
Dear All,
I'm new to unix scripting. I'm trying to write an utility script which has to check if one file is newer than another one. $3 $4 $5 $6 are files .txt. Help me please.
for i in $3 $4 $5 $6
do
if
then
echo "$1 is newer than $i"
else
echo "$i is newer than $1"
fi (9 Replies)
Hello,
Can you please help me one this:
I have two servers: Server A and server B.
Every day on 03.00AM in only one on these two servers (randomly)is generated one file, lets say file.txt.
I want to copy this file also to the other server.
I want to create a perl script that does... (2 Replies)
This should be a simple script, but can't find one with google search.
I just need to find the file that is in many directories, then overwrite that file with a newer version i.e.
find file.jar then overwrite with /root/file.jar
All I get in searches is substitute text with new test inside... (1 Reply)
Hi,
I have a text file, foo.txt, it looks something like below. In the file there is a line that gives the date in the form of: Mon Jun 15 11:09:31 2008. I need to find which date is the newest and then store certain details of that list data to another file. So, in this sample text file, I... (6 Replies)
Dear All,
I'm new to unix scripting. I'm trying to write an utility script which has to check if one file is newer than another one. The condition is I dont know the full name of the first file. I searched google and this forum for any such examples, but couldn't find any or may be I would have... (9 Replies)
Howdy folks.
I have a problem - I'm sure the answer is very simple, but I can't work it out.
I want to create a UNIX shell script that does what I've been doing in DOS batch files for years - that is, backing up files. By which I mean copying files from a source directory to a target... (4 Replies)
Hi,
I have the following question :
As far as I know unix doesn't store file creation dates.
Would that imply the following?
tar -cvzf backup.tar --newer
is equal to:
tar -cvzf backup.tar --newer-mtime ? (1 Reply)