download a file.
# Download file
curl "<url>" -OL
# Download file & rename
curl "url" -o "<new_name>" -L
| flag | description |
|---|---|
| -o file_name | write output with name file_name |
| -O | write output as the same name |
| -L | follow redirect allowed |
extract .tar.gz archive
tar -xzvf <your archive .tar.gz / .tgz>
tar -xzvf <your archive .tar.gz / .tgz> -C <output directory>
| flag | description |
|---|---|
| -x | xtract |
| -z | use gzip compression |
| -v | verbose |
| -f | the input file ... |
| -C | the redirect |
migrate files to another server / certbot migration
archive file and unarchive
https://community.letsencrypt.org/t/copy-etc-letsencrypt-or-regenerate-to-move/141684/3
# in old server
tar pzcvf /root/moving_le_old_server.tar.gz /etc/letsencrypt/{archive,live,renewal,renewal-hooks}
# in new server
tar pzxvf /root/moving_le_old_server.tar.gz -C /send file
https://superuser.com/questions/98089/sending-file-via-netcat
nc -l -p 1234 > something.zip < /dev/null
# on sender server
cat something.zip | netcat server.ip.here 1234 -q 0