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

/
/
g

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/((<svg:svg )(\w+=\"[\w\.]+\" )+)(height=\"\d+\")/$1height="xxx"/g;t' <<< "<svg:svg version=\"1.1\" baseProfile=\"full\" width=\"771\" height=\"221\" xmlns:svg=\"http://www.w3.org/2000/svg\"><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.transitorio/table_dboah_causal_no_genuino.htm\" title=\"table: dbo.ah_causal_no_genuino\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"78\" y=\"24\" width=\"16\" height=\"16\" style=\"fill:#0000FF; stroke:#0000FF; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.transitorio/table_dboah_causal_no_genuino.htm\" title=\"table: dbo.ah_causal_no_genuino\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"46\" y=\"52\">ah_causal_no_genuino</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"86\" y2=\"32\" /><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cob_ahorros/table_dboah_cuenta.htm\" title=\"table: dbo.ah_cuenta\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"312\" y=\"0\" width=\"16\" height=\"16\" style=\"fill:#0000FF; stroke:#0000FF; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cob_ahorros/table_dboah_cuenta.htm\" title=\"table: dbo.ah_cuenta\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"296\" y=\"28\">ah_cuenta</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"320\" y2=\"8\" /><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cob_ahorros_his/table_dboah_his_movimiento.htm\" title=\"table: dbo.ah_his_movimiento\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"545\" y=\"24\" width=\"16\" height=\"16\" style=\"fill:#0000FF; stroke:#0000FF; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cob_ahorros_his/table_dboah_his_movimiento.htm\" title=\"table: dbo.ah_his_movimiento\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"517\" y=\"52\">ah_his_movimiento</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"553\" y2=\"32\" /><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cobis/table_dbocl_catalogo.htm\" title=\"table: dbo.cl_catalogo\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"78\" y=\"74\" width=\"16\" height=\"16\" style=\"fill:#0000FF; stroke:#0000FF; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cobis/table_dbocl_catalogo.htm\" title=\"table: dbo.cl_catalogo\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"59\" y=\"102\">cl_catalogo</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"86\" y2=\"82\" /><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cobis/table_dbocl_tabla.htm\" title=\"table: dbo.cl_tabla\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"312\" y=\"50\" width=\"16\" height=\"16\" style=\"fill:#0000FF; stroke:#0000FF; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../Sybase.Central.cobis/table_dbocl_tabla.htm\" title=\"table: dbo.cl_tabla\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"298\" y=\"78\">cl_tabla</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"320\" y2=\"58\" /><svg:a target=\"basefrm\" xlink:href=\"sp_dbosp_movimientos_genuinos.htm\" title=\"stored procedure: dbo.sp_movimientos_genuinos\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"310\" y=\"110\" width=\"20\" height=\"20\" style=\"fill:#FF0000; stroke:#FF0000; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"sp_dbosp_movimientos_genuinos.htm\" title=\"stored procedure: dbo.sp_movimientos_genuinos\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"275\" y=\"140\">sp_movimientos_genuinos</svg:text></svg:a><svg:a target=\"basefrm\" xlink:href=\"../ExternalObjects/Sqr_Jubilacionesju_devolucion.htm\" title=\"Sqr: Jubilaciones.ju_devolucion\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"137\" y=\"162\" width=\"16\" height=\"16\" style=\"fill:#B96A9A; stroke:#B96A9A; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../ExternalObjects/Sqr_Jubilacionesju_devolucion.htm\" title=\"Sqr: Jubilaciones.ju_devolucion\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"115\" y=\"190\">ju_devolucion</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"145\" y2=\"170\" /><svg:a target=\"basefrm\" xlink:href=\"../ExternalObjects/Sqr_Jubilacionesju_rendicion_asig_fam.htm\" title=\"Sqr: Jubilaciones.ju_rendicion_asig_fam\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:rect rx=\"5\" ry=\"5\" x=\"487\" y=\"162\" width=\"16\" height=\"16\" style=\"fill:#B96A9A; stroke:#B96A9A; stroke-width:1; fill-opacity:0.5\" /></svg:a><svg:a target=\"basefrm\" xlink:href=\"../ExternalObjects/Sqr_Jubilacionesju_rendicion_asig_fam.htm\" title=\"Sqr: Jubilaciones.ju_rendicion_asig_fam\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><svg:text font-size=\"10\" font-family=\"verdana\" x=\"453\" y=\"190\">ju_rendicion_asig_fam</svg:text></svg:a><svg:line style=\"stroke:#808080;stroke-width:1\" x1=\"320\" y1=\"120\" x2=\"495\" y2=\"170\" /></svg:svg>"

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