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If I understand your problem, you're doing a global search and match, output conditional on that match. The reason it takes so long is that you are going through your big file for each line in your...

I humbly suggest that if you are concerned with security, there are much better alternatives. SSH is how folks commonly do secure transfers, specifically with "scp". You can create certificates for...

One thing you might try is using the double parens math workings of bash. Quite cool and is readable, and it avoids your shell expansion problem. Secondarily, a "here" document with the "dc"...

Please understand that I do not mean to distract from your desire for a script, but this is an excellent example, I think, of something which is bothersome with scripting but simple and...

Just a suggestion, but you might want to look at using the strtok() subroutine. It will provide for you that which is separated by your "/", your directory names, and save lots of iterative coding. ...

inet_pton() returns 0 if the source string does not contain a character string representing a valid network address in the specified address family. You might want to try feeding it an ipv6...

I would build in a logic context so that you can be sure. For example, SIGHUP is a non-zero vector when a process is started. It is good practice to null the vector after one's fork/exec (in the...

I would recommend that the writer look into bcopy() and bzero(). If memory serves, they are the original primitives, and thus the most efficient. In the C++ world, string objects help protect the...

Suggestion with regard to the original question. I believe the signal handlers to be roughly intended as giving you what amounts to a user-space interrupt service routine. Generally in those we set...

That shell script above - you see where it displays "error" - if you make the script in a file with the execute bit set, you can run it. Use the portion that shows an error, i.e. "Skipping line" -...

I wanted to make some mention here regarding coding -

calloc() takes two parameters, a count and a size. It simply multiplies the two values, requests that much from the heap and then does a...

Don't forget to check out "ncftp" to replace "ftp" - it's extremely more cool.

Much encouragement to bring files to common system via secure, authenticated connections. Once done, sdiff is very cool, showing the files side by side.

One additional note, adding to the astute comments by my esteemed colleague blowtorch. Try looking at "exec", which makes the parent's start of the child process fatal.

Suggest upgrading to syslog-ng. You're gonna love it.

bash. I don't much care for csh, as I'd rather use a compiler than something that pretty much amounts to a pseudo-language. I started with sh, back in the early 80's, pretty much like anybody else...

I think you're seeing two due to your invocation method. One method that would be more "tight" would be to have your process write it's PID to a PID file, or have the script write it if necessary. ...

As mentioned, this is sometimes due to a resource limitation, but you would be seeing a long list of "child" processes in your "ps" command if that were the case. Memory leaks can exhaust available...

I'd also check to see the status of your "selinux" subsystem. It has three states; [off|warn|on] and if it's turned on, acl's must be managed over and above the traditional unix permissions.

S.

Agreed to Porter, and apologies to the moderator on the email thing.

Streams must necessarily have a file descriptor as one of their attributes. Streams are a higher level processing construct than the driver level open/close/read/write/ioctl entry points. Generally...

Interesting to note that on the way back to dos, you can reverse the process without problem (:%s/$/^V^M/). It's all good. Another interesting insert you may find useful is ^L for form-breaks, but...

Angler,

I'm not sure if anyone has helped you with this, but in case not - here goes.

UNIX times are stored as unsigned integers. If you're getting a negative value, it's because the number is...