killall process_name

#cpu
#ram

cat /proc/cpuinfo

cat /proc/process_id/

watch 'command'
run command every to second

watch -n 3 'command'

#run command evry second

linx shell
#zsh ubuntu

schedule job

at : run at future time
cron: recurring job in future

terminal

ls -lah
is equal
ld -l -h -a

ls -lhS

ls -a

ls -A
dos not show shortcut directories

linux default
rm = rm -i

mkdir foldername
rmdir -f foldername
rmdir emtydir

touch filename
create and if file exist change timestamp

gerp "serchterm" filename

case insensetive
gerp -i "serchterm" filename

all line except thos contain search term
gerp -v "searchterm" filename

number of eccurance
gerp -c "serchterm" filename

find directory -name "*.txt"
find directory -size +10M

Menue Options

Open a cron jobs file with ctontab-e and
add the following line to enable daily backups:
$ crontab -e # open crontab file
@daily rsync -aze ssh ubuntu@10.0.2.50:/home/ubuntu/sampledir
/var/backup
In the preceding example, we have used a pull operation, where we are downloading files from
the remote server. Rsync can be used to upload files as well. Use the following command to
push files to the remote server:
$ rsync -azP -e ssh backup
ubuntu@10.0.2.50:/home/ubuntu/sampledir
#linux
#rscnc