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Thanks All, that worked :)

i have one file, i am doing 'vi Filename' now i want to search for particular string and i want to know how many times that string occurs in whole file

it worked, Thanks for Great help!!

Okay! it worked..but when i am doing ls -l | grep -v "[a-z]", it is showing nothing. the ls | grep -v "[a-z]" is working fine..thanks 4 help

Thanks for replying..but this didn't work for me..i have some files in a directory which are of two types like abc.IDS and XYZ.IDS , only the extension part is same. i want to display all the files...

i want to display all the files which has their names in the Uppercase in a particular directory...guide..

is it possible that we can restrict the root user if he runs some commands?? e.g i want if root runs command 'rm etc/passwd', he shoudn't be able to run command and throws error :confused: