Append

Append at the end of a file:

echo "your_line_to_append" >> your_file.txt

history -a

tee --append ~/.ssh/config << END
Host localhost
  ForwardAgent yes
END

Using sed

• Append a text (TEST_TO_APPEND_AT_BEGINNIG) at the beginning of a line:

sed -i s/^/TEST_TO_APPEND_AT_BEGINNIG/ file.txt

Append a space at the beginning of lines:

sed s/^/" "/

• Append a text (TEST_TO_APPEND_AT_END) at the end of a line ($):

sed -i s/$/TEST_TO_APPEND_AT_END/ file.txt

Related

• lineinfile
• Shell redirection: > and >>
• Prepend
• list
• Add line

See also

• echo, print, printf, tput, logger, write-output, echo -e, /dev/stdout, banner
• tee, sponge, append, prepend, tee --append
• Append, prepend