Remove a file:
Remove a non empty folder (-rf ) displaying more information (-v):
Remove a folder in the user home folder:
MOVE a file or RENAME it
examples:
note: the ~/ means home directory of the user
Compare two files:
check available FREE SPACE:
use with -mT to display the size in megabytes (-m) and display file system type (-T):
check DISK USAGE of a file, since ls command doesn't always display the correct size
use with -h to see size in Mbytes, GBytes "human" readable sizes:
Print work directory / display the full path:
Check manjaro version :
Pause/Stop/Continue a process using the terminal (Konsole):
htop displays the application PID
^ for the PID process 16143
Pause/Stop/Continue a process in the desktop environment using KSysGuard, just right click to access the menu:
its possible to add default parameters to a bash/terminal command using alias, to see active alias use:
to add more, edit
open ~/.bashrc with nano(or another text editor) , add to the file section of alias(search for alias in it):
Mounting a device, umounting and error correction:
the following notes were created after dealing with a mounted usb pendrive that despite being mounted was no longer accessible.
list the devices using lsblk -f ( the -f is for file type)
or use findmnt command:
the pendrive is mounted and the filesystem is extfat
atempt to unmount the device and perform a file system check using umount returns an error, use it again with -l to perform a lazy umount
now perform a file system check using fsck, -a for auto correct file system
note: exfatfsck /dev/sda2 or fsck.exfat /dev/sda2 perform the same action
The solution was to mount the device and remove the file, the other solution is to use a Windows OS to fix the USB pendrive
For other file systems:
Shutdown or Restart the computer using commands:
display network interfaces:
Monitor network I/O application: nethogs
to install it just run pacman -S nethogs, it requires super user privileges, -d 2 parameter makes it refresh every 2 seconds, the -v 3 will display a counter of the total amount of data. If there are several netowork devices either use -a or specify the device, example : nethogs eth0 eth1. Help output of nethogs:
Useful keyboard shortcuts:
r: sort by RECEIVE traffic
rm boringvideo.mp4
Remove a non empty folder (-rf ) displaying more information (-v):
rm -rf -v boringvideosfolder
Remove a folder in the user home folder:
rm ref -v ~/FutileVideos
MOVE a file or RENAME it
mv original_file_name.mp4 renamed_file_name.mp4
examples:
- move this_file.mp4 to /home/thisguy/Downloads
mv this_file.mp4 ~/Downloads/
note: the ~/ means home directory of the user
- move a file two folders up from the local directory:
mv ../../some_file.mp4 .
- move all files with mp4 extension into Videos folder, located in current user home directoy ( /home/thisGuy/Videos/)
mv *.mp4 ~/Videos/
Compare two files:
diff file_name_1.zip file_name_2.zip
check available FREE SPACE:
df
use with -mT to display the size in megabytes (-m) and display file system type (-T):
df -mT:
check DISK USAGE of a file, since ls command doesn't always display the correct size
du sample_video_file.mp4
use with -h to see size in Mbytes, GBytes "human" readable sizes:
du -h sample_video_file.mp4
Print work directory / display the full path:
pwd
Check manjaro version :
cat /etc/lsb-release
Pause/Stop/Continue a process using the terminal (Konsole):
htop displays the application PID
kill -STOP 16143
kill -CONT 16143
kill -CONT 16143
^ for the PID process 16143
Pause/Stop/Continue a process in the desktop environment using KSysGuard, just right click to access the menu:
its possible to add default parameters to a bash/terminal command using alias, to see active alias use:
to add more, edit
open ~/.bashrc with nano(or another text editor) , add to the file section of alias(search for alias in it):
alias ls="ls -ahl" ; this will replace ls command with ld -ashl
alias lsa="ls -ahl" ; when you type lsa you will get ls -ahl
alias mpvv="mpv --cache=yes --hwdec=vaapi"
alias mpva="mpv --cache=yes --player-operation-mode=pseudo-gui"
alias lsa="ls -ahl" ; when you type lsa you will get ls -ahl
alias mpvv="mpv --cache=yes --hwdec=vaapi"
alias mpva="mpv --cache=yes --player-operation-mode=pseudo-gui"
Mounting a device, umounting and error correction:
the following notes were created after dealing with a mounted usb pendrive that despite being mounted was no longer accessible.
list the devices using lsblk -f ( the -f is for file type)
lsblk -f
or use findmnt command:
findmnt
the pendrive is mounted and the filesystem is extfat
atempt to unmount the device and perform a file system check using umount returns an error, use it again with -l to perform a lazy umount
umount /dev/sda2
now perform a file system check using fsck, -a for auto correct file system
note: exfatfsck /dev/sda2 or fsck.exfat /dev/sda2 perform the same action
fsck -a /dev/sda2
The solution was to mount the device and remove the file, the other solution is to use a Windows OS to fix the USB pendrive
cd /mnt
sudo mkdir usbpart
sudo mount /dev/sda2 /mnt/usbpart/
cd usbpart/
rm f?????????????????3.mp4
sudo umount /dev/sda2
sudo fsck.exfat /dev/sda2
sudo mkdir usbpart
sudo mount /dev/sda2 /mnt/usbpart/
cd usbpart/
rm f?????????????????3.mp4
sudo umount /dev/sda2
sudo fsck.exfat /dev/sda2
its possible to create new partitions in GParted or KDE Partition Manager, however both those utilities can't format the partitions
to list partitions use:
lsblk -f
to format using NTFS filesystem, use (-f for fast formating):
sudo mkfs.nts /dev/sda2
sudo mkfs -t vfat /dev/sda1
sudo mkfs -t ext4 /dev/sda1
sudo mkfs -t ntfs /dev/sda1
sudo mkfs -t ext4 /dev/sda1
sudo mkfs -t ntfs /dev/sda1
After, its possible to mount the partitions:
mkdir ~/NewPart
mount /dev/sda2/ ~/NewPart
mount /dev/sda2/ ~/NewPart
Monitor disk I/O application: iotop
to install it just run pacman -S iotop, it requires super user privileges, -d 2 parameter makes it refresh every 2 seconds, -o (--only ) to only display process with I/O activity and -a to show accumulated values instead of instant bandwidth:
Useful keyboard shortcuts:
to install it just run pacman -S iotop, it requires super user privileges, -d 2 parameter makes it refresh every 2 seconds, -o (--only ) to only display process with I/O activity and -a to show accumulated values instead of instant bandwidth:
sudo iotop -d 2 -a -o
Useful keyboard shortcuts:
LEFT and RIGHT arrow keys : choose the sorting order
r : reverse the selected order
o : toggle only display process with I/O activity
a : a to show accumulated values instead of instant bandwidth
q : quit
r : reverse the selected order
o : toggle only display process with I/O activity
a : a to show accumulated values instead of instant bandwidth
q : quit
Shutdown or Restart the computer using commands:
sudo systemctl reboot
sudo systemctl poweroff
display network interfaces:
ip link show
Monitor network I/O application: nethogs
to install it just run pacman -S nethogs, it requires super user privileges, -d 2 parameter makes it refresh every 2 seconds, the -v 3 will display a counter of the total amount of data. If there are several netowork devices either use -a or specify the device, example : nethogs eth0 eth1. Help output of nethogs:
sudo nethogs -d 2 -a
Useful keyboard shortcuts:
m: mode (KB/s, total KB, total B, total MB)
s: sort by SENT trafficr: sort by RECEIVE traffic
q : quit
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