Sed (editor)

sed utility is using for text processing, such as strings replacements.

Sed Basic examples

• 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 text (TEST_TO_APPEND_AT_END) at the end of a line: sed -i s/$/TEST_TO_APPEND_AT_END/ file.txt

See also

• vi (editor)
• awk, awk -F, cut, $NF
• tr
• Ansible lineinfile module
• grep