Différences

Ci-dessous, les différences entre deux révisions de la page.

--- linux:sed [01-11-2013 21:40]
edmc73
+++ linux:sed [16-02-2014 22:22]
edmc73 [Exemple en vrac]
@@ Ligne 99: / Ligne 99: @@
 Ici on a rajouté **1d** qui permet de supprimer la 1ère ligne.
-==== Regexp extended ====
+===== Exemple en vrac =====
-On peut mettre l'option -r à la place de l'option -e et voici la différence
+Source
+<code>dublablacodecode<a href="/chemin/bien/precis/fichier.xyz">OnSenFoutDuNom</a>dublablacode
+dublablacodecode<a href="/chemin/bien/precis/fichier2.xyz">OnSenFoutDuNom</a>dublablacode</code>
-|Appendix A Extended regular expressions
+Résultat
-|
+<code>fichier.xyz
-|The only difference between basic and extended regular expressions is in the behavior of a few characters: ‘?’, ‘+’, parentheses, and |braces (‘{}’). While basic regular expressions require these to be escaped if you want them to behave as special characters, when using |extended regular expressions you must escape them if you want them to match a literal character.
+fichier2.xyz</code>
-|
-|Examples:
+Sed
-|
+<code>sed -r 's/.*href=".*[$/](.*)".*/\1/' fichierSource</code>
-|abc?
-|becomes ‘abc\?’ when using extended regular expressions. It matches the literal string ‘abc?’.
+Extraire la date et la reformaté dans un nom de fichier
-|c\+
-|becomes ‘c+’ when using extended regular expressions. It matches one or more ‘c’s.
+  $ echo Pict_20140215_0945.jpg | sed -r 's/.*([0-9]{4})([0-9]{2})([0-9]{2})_([0-9]{2})([0-9]{2}).*/\3-\2-\1 \4:\5/'
-|a\{3,\}
+-02-2014 09:45
-|becomes ‘a{3,}’ when using extended regular expressions. It matches three or more ‘a’s.
-|\(abc\)\{2,3\}
+===== Regexp extended =====
-|becomes ‘(abc){2,3}’ when using extended regular expressions. It matches either ‘abcabc’ or ‘abcabcabc’.
-|\(abc*\)\1
+On peut mettre l'option -r à la place de l'option -e et voici la différence
-|becomes ‘(abc*)\1’ when using extended regular expressions. Backreferences must still be escaped when using extended regular |expressions.
+>Appendix A Extended regular expressions
+>
+>The only difference between basic and extended regular expressions is in the behavior of a few characters: ‘?’, ‘+’, parentheses, and  braces (‘{}’). While basic regular expressions require these to be escaped if you want them to behave as special characters, when using extended regular expressions you must escape them if you want them to match a literal character.
+>
+>Examples:
+>
+>abc?
+>becomes ‘abc\?’ when using extended regular expressions. It matches the literal string ‘abc?’.
+>c\+
+>becomes ‘c+’ when using extended regular expressions. It matches one or more ‘c’s.
+>a\{3,\}
+>becomes ‘a{3,}’ when using extended regular expressions. It matches three or more ‘a’s.
+>\(abc\)\{2,3\}
+>becomes ‘(abc){2,3}’ when using extended regular expressions. It matches either ‘abcabc’ or ‘abcabcabc’.
+>\(abc*\)\1
+>becomes ‘(abc*)\1’ when using extended regular expressions. Backreferences must still be escaped when using extended regular expressions.

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