I want to know how can I write shell programming which remove all numaric value from one file. But that file contain both numaric and string charecter.
after run that script all string charecters are remain as it is. please help me as soon as possible.
tr command is not working. please tell me how can I write that tr command.
It is only useless if it has or serves no purpose.
In the past I've found that with new shell users it is easier to explain commands piped together rather than explain redirection. Therefore the purpose is simplicity.
The counter argument is, of course you should give the 'proper' answer the first time. Personal preference I guess.
Undeniable though it is that the pipe and redirect operators are taught as shell basics, I feel it is unlikely that someone with understanding of those basics would of asked the question in the first place.