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Terminal - Command line speed test
Scheduled Pinned Locked Moved Linux Systems Guides command line terminal speed test0 Votes1 Posts1k Views
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Screen recording can use webm as their format, it can be more simple to use a gif to embed into a website or forum, than adding scripts to host different video format.
In this case I grabbed a screen record of the progress for writing zeros to a hard drive with dd
Use ffmpeg to convert webm to gif:
First create a pallet:
Move into the directory which the webm is located, or type in the path
Where ‘dd.webm’ is the screen recording
ffmpeg -y -i dd.webm -vf palettegen palette.pngOutput:
Then convert the webm to gif:
ffmpeg -y -i dd.webm -i palette.png -filter_complex paletteuse -r 10 dd.gifThis is what I ended up with, looks like any image of any alien on the interwebz, as if shot through a potato, some tweaking of the command is in my future. None the less.
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Write zeros to all sectors
Use the command ‘lsblk’ to find the drive you wish to erase
I’m using ‘dd’ to erase things
In this case I’m torching sdb
Only use status=progress if you care it’s not necessary
dd if=/dev/zero of=/dev/sdb bs=12M status=progress
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Remove old kernel images that are cluttering the system
Most of these errors are due to low or not enough space left in the root partition.
If you are using a Debian flavor:
sudo apt-get autoremove --purgeInform grub whenever an old kernel is removed:
update grubRemove the un-used kernel config files:
These will be the files pre cursed as ‘rc’ where installed kernels use ‘ii’
… As well as files no longer used or required due to dependencies
This command will detect, print, and remove left over cruft from previously installed packages or scripts, that have been removed or updated.
sudo dpkg --purge $(dpkg -l | awk '/^rc/{print $2}')You can re-run the following to view the installed kernel(s):
dpkg --list | grep linux-image
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New script due to dependency changes:
#! /bin/sh set -e
if [ “$1” = “install” ] || [ “$1” = “upgrade” ]; then
ACTION=$1
elif [ “$1” = “” ]; then ACTION=install else echo “usage: $(basename $0) action [source]” echo “action is either install (default) or upgrade” echo “source is either tar (default) or git” exit 1 fi
if [ “$2” = “git” ] || [ “$2” = “tar” ]; then SOURCE=$2 elif [ “$2” = “” ]; then SOURCE=tar else echo “Unknown source $2!” exit 1 fi
if [ “$BPC_UID” ] && [ $(getent passwd “$BPC_UID” | cut -d ‘:’ -f 1) != “backuppc” ]; then echo “The uid = $BPC_UID is already in use!” exit 1 fi
#Install dependencies
apt-get -q update export DEBIAN_FRONTEND=noninteractive apt-get install -q -y apache2 apache2-utils libapache2-mod-perl2 par2 perl smbclient rsync tar gcc zlib1g zlib1g-dev rrdtool git make perl-doc libarchive-zip-perl libfile-listing-perl libxml-rss-perl libcgi-session-perl libacl1-dev wget iputils-ping pwgen
#Set up backuppc user and directory
if ! id backuppc >/dev/null 2>&1; then if [ “$BPC_UID” ]; then adduser --system --home /var/lib/backuppc --group --disabled-password --shell /bin/false --uid=“$BPC_UID” backuppc else adduser --system --home /var/lib/backuppc --group --disabled-password --shell /bin/false backuppc fi fi mkdir -p /var/lib/backuppc/.ssh chmod 700 /var/lib/backuppc/.ssh echo -e “BatchMode yes\nStrictHostKeyChecking no” > /var/lib/backuppc/.ssh/config if [ ! -e /var/lib/backuppc/.ssh/id_rsa ]; then ssh-keygen -q -t rsa -b 4096 -N ‘’ -C “BackupPC key” -f /var/lib/backuppc/.ssh/id_rsa fi chmod 600 /var/lib/backuppc/.ssh/id_rsa chmod 644 /var/lib/backuppc/.ssh/id_rsa.pub chown -R backuppc:backuppc /var/lib/backuppc/.ssh
#Set password or read password file
if [ “$BPC_PASS” ]; then PASSWORD=“$BPC_PASS” elif [ -e /root/password ]; then PASSWORD=$(cat /root/password) chmod 600 /root/password else PASSWORD=$(pwgen -s -1 32) echo “$PASSWORD” > /root/password chmod 600 /root/password fi echo “backuppc:$PASSWORD” | chpasswd backuppc
#Get BackupPC release versions
get_latest_release() { wget -q -O - “https://api.github.com/repos/$1/releases/latest” | grep ‘“tag_name”:’ | sed -E ‘s/.“([^”]+)"./\1/’
} bpcver=$(get_latest_release “backuppc/backuppc”) bpcxsver=$(get_latest_release “backuppc/backuppc-xs”) rsyncbpcver=$(get_latest_release “backuppc/rsync-bpc”)mkdir -p /tmp/bpc cd /tmp/bpc
if [ $SOURCE = “tar” ]; then
##Fetch and install latest stable releases
wget https://github.com/backuppc/backuppc-xs/releases/download/$bpcxsver/BackupPC-XS-$bpcxsver.tar.gz wget https://github.com/backuppc/rsync-bpc/releases/download/$rsyncbpcver/rsync-bpc-$rsyncbpcver.tar.gz wget https://github.com/backuppc/backuppc/releases/download/$bpcver/BackupPC-$bpcver.tar.gz tar -zxf BackupPC-XS-$bpcxsver.tar.gz tar -zxf rsync-bpc-$rsyncbpcver.tar.gz tar -zxf BackupPC-$bpcver.tar.gz cd BackupPC-XS-$bpcxsver perl Makefile.PL make make test make install cd …/rsync-bpc-$rsyncbpcver ./configure make make install cd …/BackupPC-$bpcver fi
if [ $SOURCE = “git” ]; then
#Fetch and install the latest development code instead
git clone https://github.com/backuppc/backuppc.git git clone https://github.com/backuppc/backuppc-xs.git git clone https://github.com/backuppc/rsync-bpc.git cd backuppc-xs perl Makefile.PL make make test make install cd …/rsync-bpc ./configure make make install cd …/backuppc ./makeDist --nosyntaxCheck --releasedate “date -u "+%d %b %Y"” --version ${bpcver}git tar -zxf dist/BackupPC-${bpcver}git.tar.gz cd BackupPC-${bpcver}git fi
if [ $ACTION = “install” ]; then ./configure.pl --batch --cgi-dir /var/www/cgi-bin/BackupPC --data-dir /var/lib/backuppc --hostname backuppc --html-dir /var/www/html/BackupPC --html-dir-url /BackupPC --install-dir /usr/local/BackupPC fi
if [ $ACTION = “upgrade” ]; then ./configure.pl --batch --config-path /etc/BackupPC/config.pl fi
#Set up web server #Note that changing the apache user and group (/etc/apache2/envvars) could cause other services #provided by apache to fail. There are alternatives if you don’t want to change the apache #user: use SCGI or a setuid BackupPC_Admin script - see the docs. cp httpd/BackupPC.conf /etc/apache2/conf-available/backuppc.conf sed -i “/Require local/d” /etc/apache2/conf-available/backuppc.conf sed -i “s/export APACHE_RUN_USER=www-data/export APACHE_RUN_USER=backuppc/” /etc/apache2/envvars sed -i “s/export APACHE_RUN_GROUP=www-data/export APACHE_RUN_GROUP=backuppc/” /etc/apache2/envvars echo ‘’ > /var/www/html/index.html a2enconf backuppc a2enmod cgid service apache2 restart
#Set up backuppc service
cp systemd/init.d/debian-backuppc /etc/init.d/backuppc
chmod 755 /etc/init.d/backuppc
update-rc.d backuppc defaults
chmod u-s /var/www/cgi-bin/BackupPC/BackupPC_Admin
touch /etc/BackupPC/BackupPC.users
sed -i “s/$Conf{CgiAdminUserGroup}.*/$Conf{CgiAdminUserGroup} = ‘backuppc’;/” /etc/BackupPC/config.pl
sed -i “s/$Conf{CgiAdminUsers}.*/$Conf{CgiAdminUsers} = ‘backuppc’;/” /etc/BackupPC/config.pl
chown -R backuppc:backuppc /etc/BackupPC
echo $PASSWORD | htpasswd -i /etc/BackupPC/BackupPC.users backuppc
service backuppc start
#Clean up
cd rm -rf /tmp/bpc echo “All done!” exit 0
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To list all files in current directory including dot files (hidden files or directories), as well as print permissions :
ls -la