Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
I have a formatted file a portion of which I have given below:
2005-05-01/23:00:23 STICKER 23452010-ABE3098 Line one asdkjad a
2005-05-01/23:01:10 STICKER 23452010-ABE3098 I want this jha
2005-05-01/23:02:03 STICKER 23452010-ABE3098 klja fjskl s
2005-05-01/23:02:05 STICKER 23452010-ABE3098 hksf s f
Using egrep, I want to match the second line in the above set. Problem is, there are a set of similar lines in the file, and for each of these lines, all I know is the first field 2005-05-01/23:01:10, and the last one [partiall] : I want. The second and third column remain same length wise and in format. Is there some way I can use egrep to get the required lines?
I tried, egrep "2005-05-01/23:01:10 [A-Z]{7} [A-F0-9-]{16} I want" <filename>.
However, I got no match for this. Any suggestions?
well you've not really specified what makes it the line that your want.. if you're saying it's the one with a known phase at the end, then it should be simple:
grep -e "I want" filename
if it's starting with a fixed date string (why would that ever happen??) then
Well, since it is a log file, it has a date field.
Coming back to the query, I tried out what you gave, and it works like a dream! Thanks a tonne. But can you explain the use of * and +? I had earlier tried .*? and it failed
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.