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3
votes
2answers
669 views

Wait for move directory to be completed before attempting to delete it

I have a process running on one computer that spawns simulations by writing the simulation data to directory pre/id. Worker processes then copy a simulation from pre to a local disk, which can be on a ...
0
votes
1answer
147 views

Sync Linux between two computers [duplicate]

I have Mint Linux installed on my Computer at home, on my Laptop and on a bootable USB3 stick. I would like these three systems to be completely identical when I get home. For example: I work on my ...
3
votes
1answer
776 views

Program for two-way synchronization of big files (VM disk images)

I heavily use virtual machines in my work and I need an efficient way of synchronizing them between my PCs. I know of bigsync, but this program works well only for one-way synchronizing (like ...
6
votes
2answers
165 views

What is the best way to synchronize files to a VFAT partition?

POSIX filenames may contain all characters except /, but some filesystems reserve characters like ?<>\\:*|". Using pax, I can copy files while replacing these reserved characters: $ pax -rw -s ...
0
votes
1answer
394 views

raid1: how to synchronize harddisks (Debian 6)

My system is Linux/Debian 6, using GPT (GUID Partition Table). If I run the command cat /proc/mdstat I see the following situation: Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] ...
3
votes
0answers
155 views

Libav: Find out the exact time that the first frame coming from an RTSP stream was dumped into a file

I am dumping an RSTP stream from a web camera into a file using avconv: avconv -f rtsp -rtsp_transport tcp -i rtsp://user@password/ 192.168.1.4/stream.cgi -t 100 -c:v libx264 -s 1024x768 -an ...
2
votes
2answers
92 views

Replace all files except one with rsync

I'm currently using rsync as follows rsync -az --delete ... What option can I use with rsync to replace all destination files that already exist except for one specific file that should not be ...
6
votes
4answers
836 views

Rsync that handles moves sensibly

I've been successfully using rsync to synchronize my home directories between my laptop and my netbook (both using ext4 with Linux). My only problem with it is that every now and then I like to ...
3
votes
1answer
448 views

Chrony 506 Cannot talk to daemon

I'm having trouble configuring chrony to sync the time between my raspberry pi and a desktop computer in an isolated network. My raspberry pi's chrony.config file looks like this: server master ...
1
vote
1answer
136 views

Portable bootable installation of Ubuntu, synchronized with my main computer

I have a difficult problem that I'm trying to solve. Currently, I am using Mac OSX and I want to create a full Ubuntu partition on my home computer; this is fine. I'm currently doing a lot of ...
2
votes
2answers
265 views

How to have a chroot system mount shared with its host?

Say I chrooted into ~/myroot with its /mnt being bind-mounted from the host's /mnt. Now (from within the chroot environment) I want to e.g. mount /dev/something /mnt/something such that not only the ...
2
votes
3answers
429 views

Monitor via SSH and execute local script upon change detection

I have an environment where I can SSH into a Linux machine via Cygwin, but not the other way around due to a security policy out of my control. I need to automate tasks on the Windows machine but ...
0
votes
1answer
280 views

Periodically sync local folders using rsync (no symlinks!)

I am using Dropbox to have an online backup of some data. However I want to encrypt my data before uploading it to Dropbox. Therefore I have created a TrueCrypt container and I am using rsync to ...
8
votes
3answers
796 views

rsync most recent x GB

I'm looking for a command/script to allow the most recently modified files (up to) 10GB be copied to another computer. So if there are 4 files 4 GB each, only 2 of them should be transferred by the ...
0
votes
1answer
440 views

Get a clean list of files transferred from rsync

I'm trying to get an itemized list of files transferred by rsync. Using the -i and --out-format options, I'm instead ending up with output that looks like this: 3HMP1MO_001.tif 974.68K 100% ...
3
votes
1answer
384 views

Periodic filesystem replication wih snapshot

I'm looking for a non-realtime replication solution that supports periodic snapshot. Here's my current situation: I have 2 email servers running Ubuntu 12.04 LTS The mail server program I use is ...
1
vote
1answer
539 views

Does sync command remove the dirty cache in the memory?

I am aware that sync command flushes the dirty cache into disk. I have run free command first, then sync, and then free again. The result of latter free command shows more free memory available than ...
2
votes
2answers
217 views

How to automatically apply changes in a folder to another?

Running Ubuntu 12.04, I work software "production" on certain folders and then I usually copy files I make up to another paths where I do the "deployment". For example, sometimes I produce some files ...
5
votes
2answers
12k views

Move files and delete directories with rsync?

Recently I needed to delete a large number of files (over 1 million) and I read that doing: rsync -av --delete `mktemp -d`/ ~/source && rmdir ~/source Was one of the most optimized ways to ...
1
vote
2answers
859 views

How do I kill 'repo sync' using crontab given it spawns many processes?

I need to 'repo sync' the Android source overnight, as my monthly bandwidth is limited. , I start the 'repo sync' at midnight, then want to kill it at 8am. The following is the command: 2 0 * * * ...
5
votes
3answers
726 views

Two-way rsync results in oscillating content

I am trying to sync content between two servers. The servers are identical builds (Ubuntu 12.04LTS) and have this cron job running to sync the content: rsync -arzc --update --delete ...
2
votes
1answer
527 views

Syncronising Calendar and Contacts between Thunberbird and Android using Linux Software

I am looking for software to sync my Calendar and my Contacts between Thunderbird, my Android phones and probably other clients like KDEs Kalendar and Kontacts. I want to have both parts available ...
2
votes
2answers
6k views

How to auto-sync with a plugged-in USB mass storage device?

I have (at the moment) three mobile USB mass storage devices (flash drive, phone, e-reader). I'd like to always have the latest versions of all my files with me (such as CV, passport, research papers, ...
3
votes
2answers
544 views

How does mdraid resync work?

I have two drives in a mirror (linux sw raid/mdadm); one drive somehow left the mirror in the past and its content is now several days old. At this moment, I'm using degraded mirror (with one drive ...
3
votes
4answers
803 views

Most Efficient way to back up/sync large directories over SSH

I'm looking to back up some large directories on a Dedicated Server to another Server on a daily basis using minimal bandwidth RSync looks like its up to the task but I'm unsure of the best command ...
4
votes
2answers
416 views

How can I synchronize processes started in different TMUX panes?

Consider this: tmux split-window -d program1 program2 # this program depends on some side effects produced by program1 In this case, program2 will start before program1 is ready. program1 will send ...
9
votes
4answers
4k views

Note taking app that can sync both android and Linux

I've been looking high and low for an Evernote alternative for Linux. I know I can use Everpad or Evernote in WINE but they don't work natively. Any note-taking app would be fine as long as it can ...
2
votes
0answers
357 views

Best way to download dropbox folders to raspberry Pi

I'm trying to sync some folders to raspberry Pi. For now, I have a script that gets the dropbox folders using curl that runs every so often using cron (once every hour for most of the folders). I'm ...
4
votes
2answers
1k views

Syncing multiple home folders with dropbox and symlinks

To keep multiple computers synced with dropbox I tried the following. Approach A. -Computer 1: Install dropbox, dropbox folder: /Dropbox/ -Computer 1: Create symbolic link in that folder to home ...
9
votes
2answers
3k views

Why can an unpriviliged user execute the `sync` command?

Currently on Ubuntu Linux, but I noticed this on other OS's too. Apparently any user can execute the sync command, but why is this? I can only see the disadvantage: system slow down due to unnecessary ...
5
votes
1answer
3k views

Rsync — Itemized List of Changes

I've learned that with the -i option, I can get rsync to list all the changes it makes. I've been using it along with the -n or --dry-run options so that I can always learn about all expected changes ...
1
vote
2answers
587 views

Synchronize the files from One folder of a Server to other

I need a script in which Files of One server will be copied to other folder of another server ONLY AND ONLY IF the file on SOURCE SERVER file doesn't exist on DESTINATION SERVER. Further Detail ...
4
votes
2answers
475 views

syncing two maildirs

I have a server that I use to frequently get email from Google using offlineimap. the email is stored in a maildir format on this server. What tool can I use to sync this maildir with the local ...
3
votes
3answers
2k views

rsync list of files in sub-directories to remote server and delete extraneous

I haven't been able to find the answer to this one. I have tried all kinds of combinations of --include, --exclude, -r, --delete-excluded, and source directory. This is what I'm trying to accomplish: ...
0
votes
2answers
860 views

Music management software that sync playlists onto Android device

I am trying to find a music management software that can sync playlists onto my Android phone running Cyanogenmod 9. BTW, this handset does not have an Internet connection. Specifically, I want the ...
1
vote
1answer
219 views

rsync hardlink attempt copies

I've tried setting up a script to hardlink my files to my box.com account (as it's a backup of my music library). As I want to run it automatically to sync my music across several devices, I wanted to ...
3
votes
3answers
492 views

Backup and synchronization

I want to synchronize my personal document repository between my different computers in my home. Today this folder is under a dedicated partition of the hard drive of a dual boot workstation. My ...
4
votes
2answers
1k views

How to use rsync with a remote remote host

I am a happy user of rsync -e ssh and use it to synchronize data between my machine and a remote host using rsync -avz -e ssh me@hostA:~/folder ~/folder And this did what I needed until now. I am ...
4
votes
3answers
275 views

anyway to fail/delay a cp process?

This is a hypothetical scenario. Say that I have a particular folder that is being synchronized by a process which is receiving a files/folders via the internet. Now while this operation is in ...
4
votes
3answers
2k views

What is a good tool to sync two computers

At home I've got a pc tower running arch linux. Recently I also acquired laptop for on the road, but I'd like to be working on the pc tower when I'm at home. Now I'm pretty sensitive as to how my ...
1
vote
1answer
839 views

Synchronize directory tree with deduplication?

I have two Linux servers that have a large amount of data (1TB+) that need to be synchronized over a slow connection (100 KB/s). A lot of the data overlaps, but are in different locations. I would ...
1
vote
1answer
316 views

Network Copy File With Low Overhead

We're trying to find a system to keep a pair of servers in sync, and I've looked at a million solutions. I came across incron, which seems like it would be perfect. Now, I just need a low overhead way ...
9
votes
3answers
390 views

Stacked filesystems with write-back

I need to setup a system where a laptop and a desktop computers coexist. The idea is, I bring the laptop into the network and the laptop syncs the /home directory( with some exceptions) with the ...
4
votes
2answers
2k views

Sync with a Directory Listing of An Apache Server

Is there an easy way to keep a folder synced with a directory listing via HTTP? Edit: Thanks for the tip with wget! I created a shell script and added it as a cron job: remote_dirs=( ...
3
votes
1answer
7k views

Real Time Local File Sync

How can I set up an instant file sync for two local directories? The catch is I need it in real time (15, 10 or even 5 seconds is too slow), and I don't want the target root directory created. For ...
4
votes
4answers
3k views

Time synchronization in XFCE 4.8

Apparently there is no gui in XFCE (as there was in gnome) to synchronize time with NTP (if there is one, please let me know the name of the application). So, how can I synch with the time servers? ...
3
votes
2answers
697 views

IPC: Shared memory killed process notification

In shared memory system, when two processes share a shared memory segment, after one process is killed, how will the other running process be notified of the killed process by the shared memory system ...
3
votes
2answers
1k views

How to add/replace only modified/updated files recursively for some 2 folders?

So I currently do stuff like: rm -rf ../../../$CLOUD_INSTALL_SUBDIR/lib_boost mkdir ../../../$CLOUD_INSTALL_SUBDIR/lib_boost cp -r ../../../$BOOST_ROOT_DIR/$BOOST_INSTALL_SUBDIR/lib/* ...
17
votes
6answers
10k views

How can I do a “copy if changed” operation?

I would like to copy a set of files from directory A to directory B, with the caveat that if a file in directory A is identical to a file in directory B, that file should not be copied (and thus its ...
8
votes
3answers
4k views

Why is my EC2 server's time off by ~10 seconds every day?

I have what I believe is a system file, /etc/cron.daily/ntpupdate which runs ntpdate ntp.ubuntu.com daily to sync with the network time. Every day it generates output very similar to this: ...