I realize that... however, I'm learning how to write scripts. I like to implement what I already know into them as much as possible. think of it as practice...
You don't learn by doing unnecessary things. Knowing what is necessary is part of learning.
Quote:
so, by this, do you mean i should:
or is the : just to show that input goes here?
That's where your function goes. Using your code, it would be:
Hi there,
I am a student and currently working on a project. I have a file that contains about 50 filenames. (1.txt, 2.txt, 3.txt ...).
I would like to know how can I store these filenames into a variable using a loop?
I would appreciate if anyone can help me. Thank You.
Regards,
Bib (4 Replies)
I'm relatively new at this scripting game, just need to learn some basic stuff for data handling.
My current need is to write a script that loops through a textfile of filenames, and for each file removes the first line and re-writes that file to a new name.
In fact I could do with knowing... (1 Reply)
Seems simple but I am having difficulty with this one: I am trying to write a single command line argument (which will be a path) - the program should print out the owner of the path.
I can not get anything I write to run.
Please help. (5 Replies)
I have written a script that will email a generic user when a device is "offline". I would like to enhance this by having the script lookup a contact's email and automatically add it to the MAIL_LIST. I am trying to lookup and return data based on a field common in two files
File 1 ... (0 Replies)
Could someone please recommend a very good shell scripting book for me. I would be starting a new job that would require a very good understanding of shell scripting. Please help. (3 Replies)
Hi,
I am newbie in shell scripting
I have a file name like simple.txt which comes from Mainframe systems onto windows dir every 15 minutes daily. File name is same. Every 15 minutes it updates.
I need to write shell script to check if the file arrived every 15 min or not.
If the new file... (4 Replies)
Hi Guys, I want to create a shell script to run multiple jobs in sequence.
Explaination -
If I were to run each jobs individually I would have gone to folder - "abin"(where my shellscript is place) as follows
cd abin
abin > runappeng.sh abc001
Now, I have list of programs which are like... (8 Replies)
Howdy folks,
I'm trying to craft a log file summarisation tool for an application that creates a lot of duplicate entries with only a different suffix to indicate point of execution. I thought I'd gotten close but I'm clearly missing something.
Here's a genericized version:
A text_file... (3 Replies)
Hi all,
I have drill to do and I'll very appreciate your help:
Please create a simple CSV file as follow (3 columns and 4 rows):
A,B,C
A,”B,C”,D
“A,B”,C,D
o A,B,”C,D”
- Please refer to the comma between the quotation marks as a parameter and not as a separator.
- Please provide... (3 Replies)
Please bear with me, I'm a beginner but have had some experience and decent knowledge to understand things as I read them and I'm in the process of trying to learn more. I recently inherited a UNIX server which has a bash script which is part of a crontab schedule that needs to be modified (or... (3 Replies)
Discussion started by: Danylko
3 Replies
LEARN ABOUT FREEBSD
ddb
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