I'm just starting the Shell Programming, currently in chapter four in the Book in Unix, Linux, and OS X by Stephen G. Kochan & Patrick Wood (4th edition).
I'm needing a little help with other possible ways to shorten this shell command:
It's purpose is to bed used in ed with a file open with possible matches.
This question was presented as follows:
Using the Regular Expression techniques that we have discussed in class develop, test, and submit a regular expression that will identify each of the following patterns.
An American Express credit card number that fits the following format: 4 digits followed by a space followed by 6 digits followed by a space followed by 5 digits.
Any input or help would be greatly appreciated!
If not, I'm happy to be a member here!
Thanks
Moderator's Comments:
Please use code tags for you code and data, as requested by our forum rules, thanks
Last edited by vbe; 07-10-2017 at 03:19 AM..
Reason: code tags please even for so lttle...
Hi
from a script i want to to read a file beginning at line e.g. number 21 to the EOF.
less +n21 temp.txt
Bevor the result, it brings an empty page, so that i cant use for scripting.
Any idea how the problem can be solved?
Thanks in advance!
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I'm not so sure that this thread should have been closed. Though it was clearly homework the student was asking a specific question related to the assignment, but not the answer to the whole assignment.
/www.unix.com/unix-dummies-questions-answers/107494-how-get-rid.html .
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