Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

# If you'd like to omit non-matching lines from the result; add ';d' to the end of the expression. sed -E 's/(url\\?":\\?")(?!http|https)(.*?)"/$1https:\/\/$2"/gm;t' <<< "\"{\"blocks\":[{\"key\":\"dimrp\",\"text\":\"bratwurst currywurst \",\"type\":\"unstyled\",\"depth\":0,\"inlineStyleRanges\":[],\"entityRanges\":[{\"offset\":0,\"length\":9,\"key\":0},{\"offset\":10,\"length\":10,\"key\":1}],\"data\":{}}],\"entityMap\":{\"0\":{\"type\":\"LINK\",\"mutability\":\"MUTABLE\",\"data\":{\"url\":\"http://www.google.com\",\"targetOption\":\"_blank\"}},\"1\":{\"type\":\"LINK\",\"mutability\":\"MUTABLE\",\"data\":{\"url\":\"www.berlin.de\",\"targetOption\":\"_blank\"}}, \"2\":{\"type\":\"LINK\",\"mutability\":\"MUTABLE\",\"data\":{\"url\":\"javascript:alert(101)\",\"targetOption\":\"_blank\"}}, \"3\":{\"type\":\"LINK\",\"mutability\":\"MUTABLE\",\"data\":{\"url\":\"https//www.google.com\",\"targetOption\":\"_blank\"}}}}\" {\"header\":{\"account_id\":\"b05f9df8-cd3b-4b30-b57b-5b45ffaac62f\",\"aggregate_id\":\"9e168575-4127-4c69-beaf-f117dbab87e8\",\"aggregate_name\":\"GUIDES\",\"aggregate_root_id\":\"9e168575-4127-4c69-beaf-f117dbab87e8\",\"aggregate_version\":32,\"correlation_id\":\"d89b000e-9b9c-4799-881a-ea4547f922d3\",\"msg_id\":\"0955de48-8488-4989-a86f-e19c8bbf739a\",\"msg_key\":\"9e168575-4127-4c69-beaf-f117dbab87e8\",\"msg_schema_name\":\"EDIT_TEXT_IN_TEXT_WIDGET\",\"msg_schema_version\":1,\"msg_timestamp\":1557938204180,\"msg_topic\":\"MICHAEL.TOPIC_COMMANDS\",\"source_system_instance_id\":\"240b62d7-7e6e-4c4a-8f5c-1c816b16012c\",\"source_system_name\":\"BynderAPI_V2__development__node_http_service_skel__0.0.1__240b62d7-7e6e-4c4a-8f5c-1c816b16012c\",\"user_id\":\"ab851f80-916b-4e12-a49c-b70e6ab1f817\"},\"payload\":{\"chapter_id\":\"cc1403b7-302a-4d0d-8a95-96b99a20c306\",\"page_id\":\"965f6828-6878-4795-81b6-066c207b2ca9\",\"section_id\":\"3e223fc9-78d6-4a60-9d27-2224d7cd4a35\",\"widget_id\":\"e976646e-0bed-4c12-9893-9688d6c89dbe\",\"widget_type\":\"text\",\"widget_text\":\"{\\"blocks\\":[{\\"key\\":\\"bg6c2\\",\\"text\\":\\"Helllo World \\",\\"type\\":\\"unstyled\\",\\"depth\\":0,\\"inlineStyleRanges\\":[],\\"entityRanges\\":[{\\"offset\\":0,\\"length\\":6,\\"key\\":0},{\\"offset\\":8,\\"length\\":5,\\"key\\":1}],\\"data\\":{}}],\\"entityMap\\":{\\"0\\":{\\"type\\":\\"LINK\\",\\"mutability\\":\\"MUTABLE\\",\\"data\\":{\\"url\\":\\"https://www.bynder.com\\",\\"targetOption\\":\\"_blank\\"}},\\"1\\":{\\"type\\":\\"LINK\\",\\"mutability\\":\\"MUTABLE\\",\\"data\\":{\\"url\\":\\"www.google.com\\",\\"targetOption\\":\\"_blank\\"}}}}\",\"command_time\":\"2019-05-15T16:36:44.166Z\",\"guide_id\":\"9e168575-4127-4c69-beaf-f117dbab87e8\",\"guide_version\":32}} "

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for SED, please visit: https://www.gnu.org/software/sed/manual/html_node/The-_0022s_0022-Command.html