I have a file in which there are strings given below:

inode 1138932c(mqsiadm)
inode 1257904c(mqsiadm)

I want to get the nos. only form these.

The o/p should be
1138932
1257904

How to filter this out ??

You can do by "awk" utility or by "cut" command.

You can also use tr

Hey, I know you have used following one..
tr -d
Deletes each character from standard input that is contained in the string specified by String1. Notes:
1 When the -C option is specified with the -d option, all characters except those specified by String1 will be deleted. The contents of String2 are ignored unless the -s option is also specified.
2 When the -c option is specified with the -d option, all values except those specified by String1 will be deleted. The contents of String2 are ignored unless the -s option is also specified.

I have contents in the file...

/clocal/mqbrkrs/user/mqsiadm/sanjay:
inode 1138932c(mqsiadm)
inode 1257904c(mqsiadm)

And when I run command given by you then I get following..
47940411389321257904


Don't know from where its been generated ?

Varun,
Try this one !!
cut -d ' ' -f 2 <file_name>|cut -c1-7

I dun't have any Linux/Unix system with me right now, so please check the syntex.

Thanks

Perhaps,

Good try....But then tell me what will you do when the numeric length varies that means it could be of sometimes 7 characters, sometimes more then 7 characters and sometimes less then that. At that time your given option would fail, because immediately the numeric string there is a character attached, presently its 'c'.
inode 1138932c(mqsiadm)
inode 1257904c(mqsiadm)

Now tell me !!