11-24-2008
Think how you would do the following task manually: send the same message to moe, larry, and curly. Now, do you really send 3 email messages? Or do you send a single email with 3 recipients?
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1. UNIX for Dummies Questions & Answers
Hi to all in forum and I hope someone will be able to help.
It is likely that over the next couple of months I have to get a hands on knowledge of Unix due to incoming work in company and I hope to be able to get some knowledge from the general Unix community.
In the meantime I have one... (2 Replies)
Discussion started by: kencheck
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2. Homework & Coursework Questions
This is a problem with basic Unix scripting. Thanks for looking!
1. The problem statement, all variables and given/known data:
Make a script that will compare 2 given directories and output those filenames that are in Directory 1 and not 2
2. Relevant commands, code, scripts, algorithms:... (1 Reply)
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3. Shell Programming and Scripting
Hello,
I am a new Unix user and new to shell programming. I am working on a script to go through a log file and find the text error:
grep -i 'error' monplus.mplog
if I find the text error in the log file I would like to echo a message to the operator staing there is an error
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4. Shell Programming and Scripting
I have the following script
=========
#!/bin/sh
MUTEXPREFIX="/tmp/"
READMUTEX=(test globallock)
# If mutexes found - exit out
for m in "${READMUTEX}"; do
|| (echo "$0 Mutex file found - Exiting\n" ; exit 1)
done;
echo "After for loop\n";
exit;=============
What i want... (8 Replies)
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5. Homework & Coursework Questions
i am trying to write a script code in unix that will:
1. The problem statement, all variables and given/known data:
display following menu to user:
(A) Add
(B) Subtract
(C) Multiply
(D) Divide
(E) Modulus
(F) Exponentiation
(G) Exit
Then ask user for choice (A-F). After taking... (5 Replies)
Discussion started by: renegade755
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6. Shell Programming and Scripting
I need to check whether the directory is exist or not. only three letter will be passed as argument. from that it should pick the entire directory.
Instead of banking and manfucuture the input will be passed as man or ban.
$1 -> ban $2-> monday
#!/bin/sh
DIR='/sales/$1*/monday'
if ;... (3 Replies)
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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