I am trying to use the watch command to see the latest file. It is showing the file but how do I switch to the latest one when an even newer file is created?
The files are pictures so I am opening them with an image viewer
here's what I tried
watch -n 0.1 ls /home/titan/mnt
but it doesn't work because I just need one file and basically the lastest file and store that file name and open it with an image viewer.
I cloned a 500GB ssd to a 1050GB ssd but I was having many issues later. I only cloned the partitions I need then later resized them. The swap partition is the only one that I didn't clone because I already have 16GB of ram.
System infos: ubu 16.04, Moved from Samsung Evo 500GB to Crucial MX300 1050GB. Dual booting between win 10 and ubu 16.04 in both. All partitions cloned except swap.
Problems that arose after cloning:
I am on Ubuntu, I have 2 external hard drives, of of them is an SSD. The HDD is from a laptop with windows 10 on it, the SSD is completely empty, I want to use it to copy everything on the HDD to the SSD. I'm using a powered usb 3.0 hub with 2 sata to USB 3.0 cables to connect the drives to my computer.
I was going to this with dd but I realized windows has many partitions, sdb1(C:\ drive), sdb2(EFI system partition), sdb3 (Microsoft reserved partions), sdb4(basic data partition). How can I copy all of them to the SSD using dd?
I am trying to resize the terminal screen to a specific size (say 34X107) to run a python curse based program. I'm not able to figure out how to do it.
Would someone know how to do this? I have cloned equal sized harddrives before with dd but I don't know how to clone a bigger one to a smaller one. The 120GB ssd has less than 50Gb worth of data fyi. How can I do this in Ubuntu?
I have 2 spare HDDS and 1 SSD laying around. I want to combine them into one big volume and connect it to my server. HDD a is 2TB, HDD b is 1TB, SSD is 250GB. I have never done raids before but my 2TB HDD is almost full and I need more space so that's why I turn to raid.
Also would it be easy to add more hard drives in the future? Family members have 2 laptops with 500GB HDD and 750HDD they will be swapping them for SSDs in the near future and I would like to add them to my file server raid too.
How can I do this in Ubuntu?
Edit: So it seems that I can do this with LVM. I have seen a few guides explaining stuff but to me they're very confusing since I have limited knowledge on modifying disks aside from using GParted for partitioning. If someone could create a complete guide with screenshots for combining at least 2 hard drives, I would be very grateful. I'm sure many other Linux users looking to do the same would benefit also.
For example, let's say I try to remove "libopenshot11", I get:
The following packages will be REMOVED:
libopenshot11 openshot-qt python3-openshot
How can I find this out without running apt remove first?
I'm trying this in 16.04 but it is not working. Taken from: https://stackoverflow.com/a/8880633/2771043.
Edit: Apparently this works if you copy and past it to a terminal but not on a script file. How do I get it to work the same way on a .sh file?
declare -a arr=("element1" "element2" "element3")
for i in "${arr[@]}"
do
echo "$i"
done
I get
old.sh: 2: old.sh: Syntax error: "(" unexpected
If I take out the brackets, I get
old.sh: 2: old.sh: declare: not found
old.sh: 5: old.sh: Bad substitution
I'm using dpkg-query -f '${Package}\n' -W "linux-image*" but that doesn't only show what's installed.
Is there a command that can list all apps that aren't install via package managers or deb file? Packages installed using bins, shs, runs, tar.gzs, appimages etc.
Bash or python script would do.
Using the Python apt API on python 2.7? I have not been able to find out how to do it.
I wrote a Python script that executes some bash scripts like this:
cmd = subprocess.Popen(['bash', 'script.sh'])
That way it executes the script although I didn't set execute permissions with chmod. I can also write in the terminal bash script.sh and it works the same. I know scripts can be executed by prepending dot slash ./ to them like this ./script.sh.
So, which way should I use in my Python script? Why?
I'm executing a python script as root with pkexec and I'm using working_dir = os.getenv('HOME') to get the username but it always returns root instead of test1 which is the current user.
How can I get the user that ran pkexec instead?
I already tried print os.environ["SUDO_USER"] but that fails since it's not being executed directly with sudo. I am on trusty now but behaves the same in 16.04.
I decided to try Ubuntu touch on my computer for the first time ever today following This Post's answer as instructions. After running ubuntu-emulator run --scale 0.75 just_testing in around 3 minutes, the terminal showed ubuntu-phablet login:. I did not set any type of password or user so it must be something default right?
For example let's say I want to remove chromium-browser in ubuntu via my script below. How can I monitor the progress of the removal?
#!/usr/bin/env python
# aptremove.py
import apt
import apt_pkg
import sys
def remove():
pkg_name = "chromium-browser"
cache = apt.cache.Cache()
cache.open(None)
pkg = cache[pkg_name]
cache.update()
pkg.mark_delete(True, purge=True)
resolver = apt.cache.ProblemResolver(cache)
if pkg.is_installed is False:
print (pkg_name + " not installed so not removed")
else:
for pkg in cache.get_changes():
if pkg.mark_delete:
print pkg_name + " is installed and will be removed"
print " %d package(s) will be removed" % cache.delete_count
resolver.remove(pkg)
try:
cache.commit()
cache.close()
except Exception, arg:
print >> sys.stderr, "Sorry, package removal failed [{err}]".format(err=str(arg))
remove()
I'm stuck on an issue with polkit authentication in python. I know USC is written in python and they've implemented that. I'd like to know how they do that part.
I have a virtual Ubuntu installation of 14.04, I ran a simple sudo apt upgrade, I got an output telling me linux-generic-lts-xenial and a bunch of other kernel related xenial components will be installed. I'm just trying to do a simple upgrade as you can tell to update software like firefox to its most recent version. I'm not trying to distro upgrade. Is there anyway to do this?
I tried mounting the network drive on all 5 computers in my home with smbfs:
//192.168.1.1/USB_Storage /media/Shared_drive cifs guest 0 0
It works but I just think samba might be more secure. I have some guest users on those computers and they can access that drive too which I don't want. I only want specific users able to see that drive connected to my router.
I have a wireless adapter that used to work in ubuntu 13.10 (dwa 171) after installing drivers for it. Now it won't work the same way anymore since I upgraded to ubuntu 14.04.
I've found the only way to make it work properly is to run the command sudo service network-manager restart I already tried putting this command in rc.local, rc2.local and rc3.local with no real luck. I want this command to run automatically right after login in with startup application program. Please tell me how to.
I'm trying to write a shell scrip to move a file to a a different location when it's found. And when it's not found to move a file from that different location to its location. This is basically my first try at writing shell scripts so be easy on me.
#!/bin/bash
FILE=/usr/lib/mozilla/plugins/libfreshwrapper.so;
if [ -f $FILE ];
then
echo "File $FILE exists"
echo "moving $FILE to home"
mv -f $File /home/jon/temporary
else
echo "File $FILE does not exists"
echo "moving file back"
mv -f /home/jon/temporary/libfreshwrapper.so /usr/lib/mozilla/plugins
echo "done!"
fi
this is my problem.
File /usr/lib/mozilla/plugins/libfreshwrapper.so exists
moving /usr/lib/mozilla/plugins/libfreshwrapper.so to home
mv: missing destination file operand after ‘/home/jon/temporary’