Saturday, June 16

File permission Related:

To change file permissions for all the files in a directory 
$ chmod 755 * 

To copy the file having spaces in its file name 
EX: 1)Filename is Supplier Key Contacts.xls 
Here there are spaces between file name. 
cp "Supplier Key Contacts.xls" "Supplier Key Contacts.xls_bkp"  

To find and replace a string in one or more files in a directory 
perl -pi -e 's/old_string/new_string/g' file_pattern 
EX:- perl -pi -e 's/18791/7001/g' *.sh 

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