To specify two or more search patterns, use the -e option:

grep -wv -e nologin -e bash /etc/passwd

Source: https://linuxize.com/post/grep-exclude/

mkdir empty_dir
rsync -a --delete empty_dir/ yourdirectory/

Source: https://unix.stackexchange.com/questions/37329/efficiently-delete-large-directory-containing-thousands-of-files#79656

Use RangeHTTPServer Python module:

“python -m RangeHTTPServer” or “python3 -m http.server”

or use caddy:

caddy file-server –listen 0.0.0.0:8000

awk -F ' ' '{print $1}'

sed ':a;N;$!ba;s/\n/ /g' input_filename

Source: https://stackoverflow.com/questions/1251999/how-can-i-replace-each-newline-n-with-a-space-using-sed

A better option here is to use the tr command as follows:

tr '\n' ' ' < input_filename

or remove the newline characters entirely:

tr -d '\n' < input.txt > output.txt

or if you have the GNU version (with its long options)

tr --delete '\n' < input.txt > output.txt

Source: https://stackoverflow.com/questions/1251999/how-can-i-replace-each-newline-n-with-a-space-using-sed#1252010

gpg -a --export > mypubkeys.asc
gpg -a --export-secret-keys > myprivatekeys.asc
gpg --export-ownertrust > otrust.txt

gpg --import myprivatekeys.asc
gpg --import mypubkeys.asc
gpg -K
gpg -k
gpg --import-ownertrust otrust.txt

Source: https://access.redhat.com/solutions/2115511