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Shell Programming and Scripting
Copy file only if newer
Post 303024486 by RudiC on Tuesday 9th of October 2018 03:03:55 PM
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Hi,
I have the following question :
As far as I know unix doesn't store file creation dates.
Would that imply the following?
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is equal to:
tar -cvzf backup.tar --newer-mtime ? (1 Reply)
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Dear All,
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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.
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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
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fi (9 Replies)
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LEARN ABOUT PHP
mv
MV(1) User Commands MV(1) NAME
mv - move (rename) files SYNOPSIS
mv [OPTION]... [-T] SOURCE DEST mv [OPTION]... SOURCE... DIRECTORY mv [OPTION]... -t DIRECTORY SOURCE... DESCRIPTION
Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY. Mandatory arguments to long options are mandatory for short options too. --backup[=CONTROL] make a backup of each existing destination file -b like --backup but does not accept an argument -f, --force do not prompt before overwriting -i, --interactive prompt before overwrite -n, --no-clobber do not overwrite an existing file If you specify more than one of -i, -f, -n, only the final one takes effect. --strip-trailing-slashes remove any trailing slashes from each SOURCE argument -S, --suffix=SUFFIX override the usual backup suffix -t, --target-directory=DIRECTORY move all SOURCE arguments into DIRECTORY -T, --no-target-directory treat DEST as a normal file -u, --update move only when the SOURCE file is newer than the destination file or when the destination file is missing -v, --verbose explain what is being done -Z, --context set SELinux security context of destination file to default type --help display this help and exit --version output version information and exit The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX. The version control method may be selected via the --backup option or through the VERSION_CONTROL environment variable. Here are the values: none, off never make backups (even if --backup is given) numbered, t make numbered backups existing, nil numbered if numbered backups exist, simple otherwise simple, never always make simple backups AUTHOR
Written by Mike Parker, David MacKenzie, and Jim Meyering. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report mv translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
rename(2) Full documentation at: <http://www.gnu.org/software/coreutils/mv> or available locally via: info '(coreutils) mv invocation' GNU coreutils 8.28 January 2018 MV(1)