rename a mulitple file based with specific porting in a file name

[Kishore Nandagopal]

Dear team ,

I have a list of file name , I need to replace date which i have mentioned in the below files. the passing input is 20160101.

File

GE_AML_CUSTTADF_20160824.CSV
GE_AML_DAYSTSDF_20160824.CSV
GE_AML_DEPTTSDFS_20160824.CSV
GE_AML_SECMTSS_20160115.CSV


Need O/P

GE_AML_CUSTTADF_20160101.CSV
GE_AML_DAYSTSDF_20160101.CSV
GE_AML_DEPTTSDFS_20160101.CSV
GE_AML_SECMTSS_20160101.CSV

 

[feherke]

Hi

Such renaming is the simplest to do with the [tt]rename[/tt] command from the File::Rename Perl package.

( Note that there is no standard [tt]rename[/tt] command on Unix/Linux. Some distributions are shipping a [tt]rename[/tt] command provided by the util-linux package, which has different syntax and is not helpful in this case. If you find no [tt]rename[/tt] command on your machine, check also [tt]rename.pl[/tt] as occasionally is shipped with that name. )

[blue]master #[/blue] ls -1
GE_AML_CUSTTADF_20160824.CSV
GE_AML_DAYSTSDF_20160824.CSV
GE_AML_DEPTTSDFS_20160824.CSV
GE_AML_SECMTSS_20160115.CSV

[blue]master #[/blue] rename.pl 's/\d{8}/20160101/' *.CSV

[blue]master #[/blue] ls -1
GE_AML_CUSTTADF_20160101.CSV
GE_AML_DAYSTSDF_20160101.CSV
GE_AML_DEPTTSDFS_20160101.CSV
GE_AML_SECMTSS_20160101.CSV

Assuming the only occurrence of 8 consecutive digits is in the date to be replaced.

In case you not have [tt]rename[/tt], you will have to use [tt]mv[/tt] in a loop and involve the shell's capabilities to craft the new file names :

[b]for[/b] file [b]in[/b] [teal]*.[/teal]CSV[teal];[/teal] [b]do[/b] mv [i][green]"$file"[/green] [green]"${file%_*}_20160101.${file##*.}"[/green][/i][teal];[/teal] [b]done[/b]

Assuming the date is always after the last underscore ( _ ) character.

In case you not have a Bourne shell compatible shell that understands the above command, pleas provide details about what you have.


Feherke.
feherke.ga

 

[Kishore Nandagopal]

Need one more help from above ques?.. how to extract date only in the file name.

Needed o/p..

20160824
20160115