Discussion :

[serge-fx]

Bonjour,

Je suis totalement novice dans la programmation, mais j'aurai besoin d'un script pouvant modifier un fichier texte.

mon fichier texte comprend ceci :

"06292007","0000","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0030","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0100","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0130","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0200","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0230","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","0300","C1","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
....
"06292007","2100","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","2130","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","2200","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","2230","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","2300","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""
"06292007","2330","C60","","CAB","0030","","","","","","","","","","","","","","","","","","","","","","","","","",""

donc 06292007 qui corréspond à la date du jour 29/06/2007
je aurai aimé trouvé/faire un script me permettant de modifier cette valeur avec la valeur du jour suivant en l'occurence 30/06/2007 soit 06302007

Ensuite j'aurai un fichier comprenant 7 jours et donc il faudrait générer un fichier toutes les semaines avec les dates corrépsondantes.

Merci de m'aiguiller vers la bonne voie.

Serge.

[gangsoleil]

Bonjour,

Pour remplacer une chaîne de caractère par une autre, il faut utiliser perl ou sed.

Par exemple le code suivant remplace dans le fichier "mon_fichier.ext" la première chaine "chaine_a_remplacer" de chaque ligne par "nouvelle_chaine".
Pour remplacer toutes les chaines de chaque ligne, il faut ajouter un g (pour 'global' après le dernier '/')

Code :

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perl -pi -e "s/chaine_a_remplacer/nouvelle_chaine/" mon_fichier.ext

Ensuite, pour faire ce que vous voulez, il vous faudra mettre cette ligne de code dans un script qui récupère la date dans le fichier, et la remplacer par la nouvelle, en faisant attention au fait que, par exemple, le lendemain du 30062007 n'est pas 31062007 mais 01072007...

[serge-fx]

Donc,

ça marche super bien.
il est possible dans le shell d'avoir la date du jour au format qui m'intéresse :

date '+%m%d%Y'

et aussi un jour de plus :

date -d 'tomorrow' '+%m%d%Y'

donc comment passer ces infos dans la ligne de commande ?

Merci,

Serge

[SnakemaN]

en essayant d'interpréter les commandes ?

Code :

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perl -pi -e "s//date '+%m%d%Y'//date -d 'tomorrow' '+%m%d%Y'/" mon_fichier.ext

voir

Code :

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sed "s/{date '+%m%d%Y'}/{date -d 'tomorrow' '+%m%d%Y'}/g" mon_fichier.ext

je teste pour voir...

(edit) m'a suis trompé, mais ca marche pas des masses, la piste est a creuser..

[serge-fx]

Code :

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 perl -pi -e "s//date '+%m%d%Y'//date -d 'tomorrow' '+%m%d%Y'/" monfichier_texte

me donne l'erreur suivante :

Code :

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String found where operator expected at -e line 1, near "'tomorrow' '+%m%d%Y'"
        (Missing operator before  '+%m%d%Y'?)
syntax error at -e line 1, near "date -d "
Execution of -e aborted due to compilation errors.