1 bash                                                                       

1=British Columbia/Colombie-Britannique,2=Pitt Meadows--Maple Ridge,3=59022,4=941=British Columbia/Colombie-Britannique,2=Richmond Centre/Richmond-Centre,3=5902_sum=227                                                                        1=British Columbia/Colombie-Britannique,2=Skeena--Bulkley Valley,3=59028,4=90586au Parti démocratique",1_sum=157                                                1=British Columbia/Colombie-Britannique,2=South Surrey--White Rock/Surrey-Sud--Wative/Conservateur",1_sum=219                                                   1=British Columbia/Colombie-Britannique,2=Steveston--Richmond East/Steveston--Rial/Libéral",1_sum=287                                                           1=British Columbia/Colombie-Britannique,2=Vancouver Granville,3=59036,4=99886,5=1=Yukon,2=Yukon,3=60001,4=33897,5=26879,6=82,7=20291,8=99.5,10=.5,11=20385,12=751=Northwest Territories/Territoires du Nord-Ouest,2=Northwest Territories/Territ Liberal/Libéral",1_sum=104                                                     1=Nunavut,2=Nunavut,3=62001,4=31906,5=20252,6=59,7=11928,8=99.2,10=.8,11=12023,1admin@i-09c5441a6537c2c35:~$ mlr merge-fields -a sum -f 9 -o 1 my3.csv          

└─nvme0n1p15 259:5    0  124M  0 part /boot/efi                                 nvme2n1      259:2    0    1G  0 disk                                           admin@i-0ee381b106ee6f241:~$ sudo lvdisplay                                     admin@i-0ee381b106ee6f241:~$ df -hT                                             Filesystem      Type      Size  Used Avail Use% Mounted on                      udev            devtmpfs  217M     0  217M   0% /dev                            tmpfs           tmpfs      46M  368K   46M   1% /run                            /dev/nvme0n1p1  ext4      7.7G  6.1G  1.2G  84% /                               tmpfs           tmpfs     228M   12K  228M   1% /dev/shm                        tmpfs           tmpfs     5.0M     0  5.0M   0% /run/lock                       /dev/nvme0n1p15 vfat      124M  5.9M  118M   5% /boot/efi                       admin@i-0ee381b106ee6f241:~$ sudo mkfs.ext4 /dev/nvme1n1                        mke2fs 1.46.2 (28-Feb-2021)                                                     /dev/nvme1n1 contains a LVM2_member file system                                 Proceed anyway? (y,N)                                                           

                                                                                example:  knock myserver.example.com 123:tcp 456:udp 789:tcp                                                                                                    admin@i-080ac908debd2d3d7:~$ knock -v 127.0.0.1 80:tcp 1                        hitting tcp 127.0.0.1:80                                                        hitting tcp 127.0.0.1:1                                                         admin@i-080ac908debd2d3d7:~$ knock -v 127.0.0.1 80:tcp                          hitting tcp 127.0.0.1:80                                                        admin@i-080ac908debd2d3d7:~$ curl -D - -v localhost                             *   Trying 127.0.0.1:80...                                                      * connect to 127.0.0.1 port 80 failed: Connection refused                       * Failed to connect to localhost port 80: Connection refused                    * Closing connection 0                                                          curl: (7) Failed to connect to localhost port 80: Connection refused            admin@i-080ac908debd2d3d7:~$ nc -vv 12