Case-insensitive substitution

More sed commands

• Multiple expressions
  sed -e 's/foo/bar/g' -e 's/baz/qux/g' file.txtcopy

  Apply multiple substitutions in one command

• Strip leading/trailing whitespace
  sed 's/^[[:space:]]*//;s/[[:space:]]*$//' file.txtcopy

  Trim leading and trailing whitespace from each line

• Address range substitution
  sed '5,15s/DEBUG/INFO/g' app.logcopy

  Apply substitution only to lines 5 through 15

• Extract value from key=value file
  sed -n 's/^DB_HOST=//p' .envcopy

  Print the value of DB_HOST from a .env file

• Substitute first match per line
  sed 's/foo/bar/' file.txtcopy

  Replace the first occurrence of 'foo' with 'bar' per line

all 15 sed commands →