sean@sean-XPS-13-9300:~$ tracker reset --hard
CAUTION: This process may irreversibly delete data.
Although most content indexed by Tracker can be safely reindexed, it can’t be assured that this is the case for all data. Be aware that you may be incurring in a data loss situation, proceed at your own risk.

Are you sure you want to proceed? [y|N]: y
Found 2 PIDs…
  Killed process 1178 — “tracker-miner-fs”
  Killed process 1532 — “tracker-store”
_g_io_module_get_default: Found default implementation dconf (DConfSettingsBackend) for ‘gsettings-backend’
Setting database locations
Checking database directories exist
Checking database version
Checking whether database files exist
Removing all database/storage files
  Removing database:'/home/sean/.cache/tracker/meta.db'
  Removing db-locale file:'/home/sean/.cache/tracker/db-locale.txt'
  Removing journal:'/home/sean/.local/share/tracker/data/tracker-store.journal'
  Removing db-version file:'/home/sean/.cache/tracker/db-version.txt'
sean@sean-XPS-13-9300:~$ free -m
              total        used        free      shared  buff/cache   available
Mem:           7542        1803        2166         432        3572        5002
Swap:          2047         142        1905
sean@sean-XPS-13-9300:~$ man free
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  1891778560  2267140096   450699264  3750387712  5248475136
Swap:    2147479552   148897792  1998581760
sean@sean-XPS-13-9300:~$ free -g
              total        used        free      shared  buff/cache   available
Mem:              7           1           2           0           3           4
Swap:             1           0           1
sean@sean-XPS-13-9300:~$ free -k
              total        used        free      shared  buff/cache   available
Mem:        7723932     1847496     2215004      439064     3661432     5126472
Swap:       2097148      145408     1951740
sean@sean-XPS-13-9300:~$ free -p
free: invalid option -- 'p'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -t
              total        used        free      shared  buff/cache   available
Mem:        7723932     1845340     2216280      439896     3662312     5127804
Swap:       2097148      145408     1951740
Total:      9821080     1990748     4168020
sean@sean-XPS-13-9300:~$ man free
sean@sean-XPS-13-9300:~$ free -peta
free: invalid option -- 'p'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -tera
free: invalid option -- 'e'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  1889705984  2270859264   448995328  3748741120  5252251648
Swap:    2147479552   148897792  1998581760
sean@sean-XPS-13-9300:~$ free -t
              total        used        free      shared  buff/cache   available
Mem:        7723932     1845736     2216244      439544     3661952     5127760
Swap:       2097148      145408     1951740
Total:      9821080     1991144     4167984
sean@sean-XPS-13-9300:~$ free -tera
free: invalid option -- 'e'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -tebi
free: invalid option -- 'e'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -b --tera
free: Multiple unit options doesn't make sense.
sean@sean-XPS-13-9300:~$ free --tera
              total        used        free      shared  buff/cache   available
Mem:              0           0           0           0           0           0
Swap:             0           0           0
sean@sean-XPS-13-9300:~$ free --peta
              total        used        free      shared  buff/cache   available
Mem:              0           0           0           0           0           0
Swap:             0           0           0
sean@sean-XPS-13-9300:~$ free --kibi
              total        used        free      shared  buff/cache   available
Mem:        7723932     4671212      140884      800860     2911836     1941148
Swap:       2097148      167936     1929212
sean@sean-XPS-13-9300:~$ free - mebi
              total        used        free      shared  buff/cache   available
Mem:        7723932     4680048      160176      772388     2883708     1960588
Swap:       2097148      167936     1929212
sean@sean-XPS-13-9300:~$ free --gibi
              total        used        free      shared  buff/cache   available
Mem:              7           4           0           0           2           1
Swap:             1           0           1
sean@sean-XPS-13-9300:~$ free --tibi
free: unrecognized option '--tibi'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  4772376576   184446976   786337792  2952482816  2032222208
Swap:    2147479552   171966464  1975513088
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  4764684288   190623744   786808832  2953998336  2039427072
Swap:    2147479552   171966464  1975513088
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  4759252992   195411968   786276352  2954641408  2045403136
Swap:    2147479552   171966464  1975513088
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  4754141184   199360512   787390464  2955804672  2049421312
Swap:    2147479552   171966464  1975513088
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  5479710720   290217984   940212224  2139377664  1198759936
Swap:    2147479552   255328256  1892151296
sean@sean-XPS-13-9300:~$ up
up: command not found
sean@sean-XPS-13-9300:~$ uptime
 22:50:41 up 10:09,  1 user,  load average: 0.98, 1.14, 1.24
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  5143162880   589021184   721010688  2177122304  1747795968
Swap:    2147479552   240910336  1906569216
sean@sean-XPS-13-9300:~$ free -b
              total        used        free      shared  buff/cache   available
Mem:     7909306368  5186088960   578539520   687898624  2144677888  1737998336
Swap:    2147479552   240910336  1906569216
sean@sean-XPS-13-9300:~$ free -peta
free: invalid option -- 'p'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free --peta
              total        used        free      shared  buff/cache   available
Mem:              0           0           0           0           0           0
Swap:             0           0           0
sean@sean-XPS-13-9300:~$ free --lohi
              total        used        free      shared  buff/cache   available
Mem:        7723932     2529100     2500124      612820     2694708     4281308
Low:        7723932     5223808     2500124
High:             0           0           0
Swap:       2097148      311808     1785340
sean@sean-XPS-13-9300:~$ free -v
free: invalid option -- 'v'

Usage:
 free [options]

Options:
 -b, --bytes         show output in bytes
     --kilo          show output in kilobytes
     --mega          show output in megabytes
     --giga          show output in gigabytes
     --tera          show output in terabytes
     --peta          show output in petabytes
 -k, --kibi          show output in kibibytes
 -m, --mebi          show output in mebibytes
 -g, --gibi          show output in gibibytes
     --tebi          show output in tebibytes
     --pebi          show output in pebibytes
 -h, --human         show human-readable output
     --si            use powers of 1000 not 1024
 -l, --lohi          show detailed low and high memory statistics
 -t, --total         show total for RAM + swap
 -s N, --seconds N   repeat printing every N seconds
 -c N, --count N     repeat printing N times, then exit
 -w, --wide          wide output

     --help     display this help and exit
 -V, --version  output version information and exit

For more details see free(1).
sean@sean-XPS-13-9300:~$ free --v
free from procps-ng UNKNOWN
sean@sean-XPS-13-9300:~$ free -k
              total        used        free      shared  buff/cache   available
Mem:        7723932     2529528     2499916      611264     2694488     4282480
Swap:       2097148      311808     1785340
sean@sean-XPS-13-9300:~$ flow

Command 'flow' not found, but can be installed with:

sudo snap install flow

sean@sean-XPS-13-9300:~$ calm

Command 'calm' not found, did you mean:

  command 'cal' from deb bsdmainutils (11.1.2ubuntu3)
  command 'calc' from deb calc (2.12.7.2-4)
  command 'bcalm' from deb bcalm (2.2.1-2build1)
  command 'clm' from deb mcl (1:14-137+ds-4)

Try: sudo apt install <deb name>

sean@sean-XPS-13-9300:~$ cal
   December 2021      
Su Mo Tu We Th Fr Sa  
          1  2  3  4  
 5  6  7  8  9 10 11  
12 13 14 15 16 17 18  
19 20 21 22 23 24 25  
26 27 28 29 30 31     
                      
sean@sean-XPS-13-9300:~$ calc

Command 'calc' not found, but can be installed with:

sudo apt install calc

sean@sean-XPS-13-9300:~$ bcalm

Command 'bcalm' not found, but can be installed with:

sudo apt install bcalm

sean@sean-XPS-13-9300:~$ telnet
telnet> exit
?Invalid command
telnet> ?
Commands may be abbreviated.  Commands are:

close   	close current connection
logout  	forcibly logout remote user and close the connection
display 	display operating parameters
mode    	try to enter line or character mode ('mode ?' for more)
open    	connect to a site
quit    	exit telnet
send    	transmit special characters ('send ?' for more)
set     	set operating parameters ('set ?' for more)
unset   	unset operating parameters ('unset ?' for more)
status  	print status information
toggle  	toggle operating parameters ('toggle ?' for more)
slc     	set treatment of special characters

z       	suspend telnet
environ 	change environment variables ('environ ?' for more)
telnet> ?close
?Invalid command
telnet> close
Need to be connected first for `bye'.
telnet> logout
Need to be connected first for `logout'.
telnet> ?  
Commands may be abbreviated.  Commands are:

close   	close current connection
logout  	forcibly logout remote user and close the connection
display 	display operating parameters
mode    	try to enter line or character mode ('mode ?' for more)
open    	connect to a site
quit    	exit telnet
send    	transmit special characters ('send ?' for more)
set     	set operating parameters ('set ?' for more)
unset   	unset operating parameters ('unset ?' for more)
status  	print status information
toggle  	toggle operating parameters ('toggle ?' for more)
slc     	set treatment of special characters

z       	suspend telnet
environ 	change environment variables ('environ ?' for more)
telnet> quit
sean@sean-XPS-13-9300:~$ lol

Command 'lol' not found, did you mean:

  command 'gol' from deb growl-for-linux (0.8.5-5)
  command 'sol' from deb aisleriot (1:3.22.9-1)
  command 'col' from deb bsdmainutils (11.1.2ubuntu3)
  command 'lola' from deb lola (1.3-1)

Try: sudo apt install <deb name>

sean@sean-XPS-13-9300:~$ l33t
l33t: command not found
sean@sean-XPS-13-9300:~$ leet

Command 'leet' not found, did you mean:

  command 'beet' from snap beets (1.4.9)
  command 'peet' from deb pipexec (2.5.5-2)
  command 'eleet' from deb filters (2.55-3build1)
  command 'beet' from deb beets (1.4.9-4)
  command 'eet' from deb libeet-bin (1.23.3-8)

See 'snap info <snapname>' for additional versions.

sean@sean-XPS-13-9300:~$ leetspeek
leetspeek: command not found
sean@sean-XPS-13-9300:~$ rust

Command 'rust' not found, did you mean:

  command 'dust' from snap dust (v0.7.5)
  command 'rush' from deb rush (1.8+dfsg-1.1)
  command 'trust' from deb p11-kit (0.23.20-1ubuntu0.1)
  command 'rst' from deb bro-aux (0.42-1)
  command 'rustc' from deb rustc (1.53.0+dfsg1+llvm-4ubuntu1~20.04.1)

See 'snap info <snapname>' for additional versions.

sean@sean-XPS-13-9300:~$ git

Command 'git' not found, but can be installed with:

sudo apt install git

sean@sean-XPS-13-9300:~$ xeyes
q
:q
^[^[^[sean@sean-XPS-13-9300:~$ q

Command 'q' not found, but can be installed with:

sudo snap install q                       # version 1.6.3-1, or
sudo apt  install python3-q-text-as-data  # version 1.7.4+2018.12.21+git+28f776ed46-2

See 'snap info q' for additional versions.

sean@sean-XPS-13-9300:~$ :q
:q: command not found
sean@sean-XPS-13-9300:~$