In the following script when I get SIZE1 and SIZE2, they are of type string. I can not do any mathematical operations on them. I wanted to find out if I can convert string in to Number. Thanks in Advance.
FILE1='/export/registry/incoming/reg.dmp'
FILE2='/export/registry/reg.dmp'
SIZE1=`ls... (2 Replies)
I have a variable (say $A) and while passing it gets either a number or some other string. Now how can test (with if else) whether the variable is just a ne or something else ?
Thanks a lot to all in advance
C Saha (2 Replies)
Hi everyone,
I have a string as follow
ts1n65ulpa4096x16m16_130a_ss1p08v125c
i would like to extract 4096 and 16 from string and save it into two variable. but this string could also have the form
ts1n65ulpa32x16m16_130a_ss1p08v125c
therefore the number before "x" could be 2 or 3 digits. i use... (6 Replies)
Hey I want to know if there is an option to know the number of lines containing a certain string (bit for example) in a file? Say I want to know number of lines containing only the string BIT in file xyz. I know how to get number of lines in a file by using wc -l but how do you get number of lines... (1 Reply)
Hi there, I have some user input in a variable called $VAR, and i need to ensure that the string is 5 or less characters .... does anybody know how i can count the characters in the variables ?
any help would be great, cheers (2 Replies)
My question is so simple:
A = raw_input("A ")
if A == '56':
VAR = (A + 54)/13
else:
print "other operations"
if I write in input 5656565656
i want to make some arithmetic operations if the first input is 56XXX
but the output is
TypeError: cannot concatenate 'str' and... (2 Replies)
Hi
actually what happen i have taken a value from database table and stored in variable and that value is 20100601 000000 but this value is stored as string value in database table so
after storing this value in variable a when i did operation on this a variable like
a=`expr ${a} +1`
i m... (1 Reply)
I have a txt file as database. when i run my program what it does is it ask me for 3 name and stored in the file as
name1:name2:name3:1
when u enter 3 name it add those in file as above format and add 1 at the end. I what i want is if i enter same names again it changes that 1 to 2 and so... (3 Replies)
I have below code inside my awk script
if ( $0 ~ /SVC IN:/ )
{
svc_in=substr( $0,23 , 3);
if (msg_start == 1 && msg_end == 0)
{
msg_arr=$0;
}
}
else if ( $0 ~ /^SVC OUT:/ )
{
svc_out=substr( $0, 9, 3);
if (msg_start == 1 && msg_end == 0)
... (6 Replies)
Discussion started by: bhagya123
6 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