11-11-2008
Should I use PERL or Shell scripting?
Hello,
I have done some BASIC shell scripting/PERL scripting before so I am familiar with the languages. I am not really sure which one would lend itself better to the application I have to write.
I am required to scan the message logs for possible break in attempts. If I use shell scripting I could use GREP for a particular pattern and I am sure PERL has some similar pattern scanning capability. I am not sure which language could accomplish the following more easily: In each warning attempt I would have to locate the username used to loggin and keep track of how often this username attempted a loggon in a variable.
Opinions/suggestions?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
please give the difference between AIX shell scripting and Unix shell scripting. (2 Replies)
Discussion started by: haroonec
2 Replies
2. Shell Programming and Scripting
I guess the subject asks it all, but I am wondering (before I go and code a COBOL module) if conversion of regular ASCII data to COMP-3 is possible on a UNIX environment (AIX 5.1)? Any help would be appreciated! Thanks, Dave (13 Replies)
Discussion started by: dfran1972
13 Replies
3. Shell Programming and Scripting
Hi,
I need sample code to compare the two files line by line which contains text strings and to print the difference in the third file.
Thanks in advance (1 Reply)
Discussion started by: sudhakaryadav
1 Replies
4. Shell Programming and Scripting
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
Discussion started by: anupdas
2 Replies
5. Shell Programming and Scripting
Hi,
I have general question: i have good working Perl script with .pl extension, and now I have to migrate all to another Linux box, and I was told that I can use only shell scripting, so I'm not sure how different those two things are, will it work without any changes . Is there anything smart I... (6 Replies)
Discussion started by: trento17
6 Replies
6. What is on Your Mind?
Hi all,
I would like to start developping some good scripting skills. Do you think it would be best to start with shell scripting or Perl? I already got a fundation, really basics, in perl. but I am wondering what would be best to be good at first.
Can you please help me determine which one to... (14 Replies)
Discussion started by: Pouchie1
14 Replies
7. Shell Programming and Scripting
Hai ! I am doing a research on Bioinformatics and a part of the code in perl have to be converted to shell scripting. I am new to shell programming. Pls. kindly help me to convert this code to shell script though it is somewhat lengthy.
PLS KINDLY HELP ME. THANKS IN ADVANCE.
my @FreeEnergy =... (1 Reply)
Discussion started by: kswapnadevi
1 Replies
8. What is on Your Mind?
Gents,
I have been working in a Solaris/Unix environment for about 9 months. I took some linux classses online before getting the job. But, I am not very good at scripting. I want to learn how to script. Do you think that I should start with Shell scripting or Perl? I wanted to continue with... (2 Replies)
Discussion started by: Pouchie1
2 Replies
9. Web Development
i am going to study any one of the scripting languages mentioned above(shell 0r perl scripting) . Which is having more scope for a fresher? (1 Reply)
Discussion started by: Anna Hussie
1 Replies
10. Shell Programming and Scripting
I am working on converting shell to Perl script. In shell we have built in function
trap
Do you know alternative in Perl or actually we don't need it?
Thanks for contribution (3 Replies)
Discussion started by: digioleg54
3 Replies
DDB(8) BSD System Manager's Manual DDB(8)
NAME
ddb -- configure DDB kernel debugger properties
SYNOPSIS
ddb capture [-M -core] [-N -system] print
ddb capture [-M -core] [-N -system] status
ddb script scriptname
ddb script scriptname=script
ddb scripts
ddb unscript scriptname
ddb pathname
DESCRIPTION
The ddb utility configures certain aspects of the ddb(4) kernel debugger from user space that are not configured at compile-time or easily
via sysctl(8) MIB entries.
To ease configuration, commands can be put in a file which is processed using ddb as shown in the last synopsis line. An absolute pathname
must be used. The file will be read line by line and applied as arguments to the ddb utility. Whitespace at the beginning of lines will be
ignored as will lines where the first non-whitespace character is '#'.
OUTPUT CAPTURE
The ddb utility can be used to extract the contents of the ddb(4) output capture buffer of the current live kernel, or from the crash dump of
a kernel on disk. The following debugger commands are available from the command line:
capture [-M core] [-N system] print
Print the current contents of the ddb(4) output capture buffer.
capture [-M core] [-N system] status
Print the current status of the ddb(4) output capture buffer.
SCRIPTING
The ddb utility can be used to configure aspects of ddb(4) scripting from user space; scripting support is described in more detail in
ddb(4). Each of the debugger commands is available from the command line:
script scriptname
Print the script named scriptname.
script scriptname=script
Define a script named scriptname. As many scripts contain characters interpreted in special ways by the shell, it is advisable to
enclose script in quotes.
scripts
List currently defined scripts.
unscript scriptname
Delete the script named scriptname.
EXIT STATUS
The ddb utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The following example defines a script that will execute when the kernel debugger is entered as a result of a break signal:
ddb script kdb.enter.break="show pcpu; bt"
The following example will delete the script:
ddb unscript kdb.enter.break
For further examples, see the ddb(4) and textdump(4) manual pages.
SEE ALSO
ddb(4), textdump(4), sysctl(8)
HISTORY
The ddb utility first appeared in FreeBSD 7.1.
AUTHORS
Robert N M Watson
BUGS
Ideally, ddb would not exist, as all pertinent aspects of ddb(4) could be configured directly via sysctl(8).
BSD
December 24, 2008 BSD