Using sed for multiline matching
Ok, I give up. How do you use sed to do a multiline search given a regular expression? I don't want to replace anything, just do a search, much like grep. However, I'm to understand that grep only searches one line at a time. Thanks, - Dave ... 15 Dec 2009 18:56
Use of 'set'
I was looking back at the thread: "getting time since epoch using shell commands? (Bourne Shell)" http://groups.google.com/group/comp.unix.shell/browse_thread/thread/121344445ef2c75a/e4903a12920f4c?hl=en&ie=UTF-8&q=seconds+since+epoch+comp.unix.shell and in particular this post http://groups.google.com/group/... 14 Dec 2009 21:03
read in bash script in a loop
houghi wrote: I am trying to do the following in bash and don't even know if it is possible: Do something if the 'Y' is pressed. However if any other key is pressed or if no key is pressed for 5 seconds. The first part is pretty easy with a simple read. However I have no idea where to start ... 11 Dec 2009 12:28
unix WHO command
I'm running the WHO command on an AIX system, interrogating the /etc/ security/failedlogin file. The time being displayed does not include the YEAR. Since this is a cumulative file, YEAR would be really helpful. How can I format the time to display the YEAR? ... 9 Dec 2009 17:46
unable to open files
Hi All, I am using RedHat linux 4.5. I am unable to login and not able to open files from single user mode i am getting the below message the saying that "/bin/vi : cannot allocate memory" when i open files. Kindly help me with a solution. It is a very critical database server. Regards, Lakshman ... 11 Dec 2009 14:43
manually flush stdout pipe?
hi I have encountered a strange problem. I am writing a pascal (Lazarus) GUI program to communicate with a C++ command line tool. In the C++ tool, it prints out various informations (with fprintf(stdout, ....) ) during the execution, and I was trying to capture it in the GUI. Strangely, I found that my GUI onl... 8 Dec 2009 23:03
The regex to capture IPv4 addresses from a file by using (e)grep.
Hi all, I want to obtain all of the IPv4 addresses from a file by using (e)grep. What regex should I use to do this thing? Thanks in adavance. -- ..: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :. ... 15 Dec 2009 01:24
mark patch conflicts/rejects as diff3 does it
Hello I was wondering if there is a way to mark conflicts right in the file a patch is applied to. Currently I 'only' get a .rej file from patch that contains the hunks that couldn't be applied. I think at least for some of those rejected hunks it should be possible to mark them in the file similar to the way di... 7 Dec 2009 18:29
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why string should be preceded by $
The output is 4. While IFS='\n', the output is 1. It is obvious that `var' is expanded as four string in the first case, while it is expanded as a single string in the second case. The point is that IFS has different meaning in the two cases. Is there any explanation? #!/bin/bash var='a b c d' IFS=$'\n' ... 5 Dec 2009 15:09