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I often use Everything (a search tool) on Windows. It uses USN Journal to speed file name search.
Do Linux filesystems (ext4, xfs, btrfs, etc.) have a similar function to USN Journal?
The USN journal lets a Windows program keep track of changes to files.
An program on Linux can do the same by using inotify. It allows a program to be notified about every change to the files.
It is not a function of any particular filesystem, but of the kernel's filesystem layer, so it works with any filesystem.
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Closed 2 years ago.
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I read that "1" is the number of hard links to the specific file, but what exactly are hard links?
In computing, a hard link is a directory entry that associates a name
with a file on a file system. All directory-based file systems must
have at least one hard link giving the original name for each file.
The term “hard link” is usually only used in file systems that allow
more than one hard link for the same file.
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Closed 2 years ago.
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IS there any way to find what commands we have run in linux server apart from history command
is there any log file where i can see what are commands i have run
unfortunately my ~/.bash_history is clear
On linux distributions and installations I encountered: no, it's not possible. Even .bash_history is storing only bash history (and some administrators can (and will) use other shell(s)) and has usually set a limit so sometimes gets truncated. You would have to write and configure such utility yourself.
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Closed 7 years ago.
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I have a Lumix camera which, like most new cameras, record video in AVCHD format. The files get segmented into 2 or 4 GiB segments because of the limitations of the filesystem used on the memory card.
When I transfer the files to my linux computer to edit them I naturally want to have each video in a single file, which is no problem at all for linux's filesystems. So, how can I losslessly join these segments, maintaining a/v-sync?
(With Avidemux 2.6.8 I can append these segments, but it leads to nasty distortions at the cut point.)
The solution, which seems to work with my files at least, turned out to be very simple:
ffmpeg -i "concat:00000.MTS|00001.MTS|00002.MTS" -c copy output.mts
One still has to figure out which of the files belong together, though.
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Closed 9 years ago.
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I would like to execute "lessc ~/less/app.less > ~/stylesheets/styles.css" everytime I modify a .less file on my machine. Is it possible ?
If you are looking for a generic approach, Linux kernel has a feature called inotify that monitors file system changes.
You will have to write a small program to make use of the interface. inotify has bindings for all major languages, including perl and python .
Take a look at incron, a crontab-like system for inotify. You can set up rules to trigger any commands you want, based on events in the filesystem.
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Closed 8 years ago.
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I recently made the following (i believe important) changes to my system
Actually I was following this tutorial to use something called Linux Containers.
So can you tell me if any of the following stuff is capable enough to crash my system ?
1. Making changes to /etc/fstab or
2. mount /cgroup which will try to mount cgroups automatically or
3 making changes to etc/network/interfaces or
4 making changes to /etc/resolv.conf
A typo in fstab can definitely make a system un-bootable. However, you should be able to boot from CD, mount the HD, and fix it.