dear friends,
I have a large size file containg two fields data
like this
*** ****
122 222
***** *****
***** *****
232 233
i have file like this.
i want to remove blank lines from file .
i think awk is servive this problem
i wrote a awk command but the error is... (3 Replies)
Dear friends,
I am writing shell script in csh .
i want to make arthimatic operation in csh.
i wrote sysntax like this.
set val = 230
set tmp = `0.1 * $val + 300`
echo $tmp
but it is not working .
anyone please give me syntax. (3 Replies)
cat > $file <<OP1 #line 1
#some commands
OP1#last lineHi, i came across the above shell code, but i don't understand the purpose of the first line and and last line,especially the effect of putting a tag( OP1) , can anyone advise me their purpose? (2 Replies)
I am calculating a time and appending a space in front of it to get only certain records in a file because the times are represented in HH:II:SS format and I don't want to see anything other than the actual hour and minute combination (hence appending the space to the front of the time). My... (9 Replies)
I have one File named "txt_file"
# cat txt_file
<DBType>RT</DBType>
<AppType>RT</AppType>
--------------------------------------------------
I want replace "<AppType>RT</AppType>" to
<AppType>XY</AppType> in txt_file and output redirect to Newfile
... (2 Replies)
I'm calling the following if-else from nawk. But I keep getting an error at the "else". I've tried putting more brackets and ; but still I get complaints about the "else".
Any ideas ?
Thanks,
wbrunc
BEGIN { FS = "," ; OFS = "," }
{ if ( $8 ~ /A/ && $9 == B )
$1="4/29/2013" ;
$2="J.Doe"... (2 Replies)
awk -v sw="lemons|dogs" 'NR>100 && NR<200 BEGIN { c=split(sw,a,""); } { for (w in a) { if ($0 ~ a) d]++; } }
END { for (i in a) { o=o (a"="(d]?d]:0)","); }
sub(",*$","",o); print o;
}' /home/jahitt/data.txt
what am i doing wrong with the above code? im pretty sure the issue is in the... (6 Replies)
Hi All,
I have a syntax problem with a procedure in oracle. I am looking to just produce the number of rows
from each table located in the HR schema nothing complex. This procedure works great up to dbms_output.put_line(tab_var); where it lists the names of each table in the user schema.
My... (5 Replies)
Hello! i try to understand the art of bash scripting but unfortunately, more i try and less i understand it.
Can someone tell me how i can learn its logic? i will give you an example why its making me crazy. Look at this basic script:
my for loops are working like this, but it took me more than... (10 Replies)
Discussion started by: sablista
10 Replies
LEARN ABOUT CENTOS
std::exception
std::exception(3) Library Functions Manual std::exception(3)NAME
std::exception -
SYNOPSIS
Inherited by __gnu_cxx::__concurrence_broadcast_error, __gnu_cxx::__concurrence_lock_error, __gnu_cxx::__concurrence_unlock_error,
__gnu_cxx::__concurrence_wait_error, __gnu_cxx::forced_error, __gnu_cxx::recursive_init_error, std::bad_alloc, std::bad_cast,
std::bad_exception, std::bad_function_call, std::bad_typeid, std::bad_weak_ptr, std::ios_base::failure, std::logic_error, and
std::runtime_error.
Public Member Functions
virtual const char * what () const noexcept
Detailed Description
Base class for all library exceptions.
This is the base class for all exceptions thrown by the standard library, and by certain language expressions. You are free to derive your
own exception classes, or use a different hierarchy, or to throw non-class data (e.g., fundamental types).
Definition at line 60 of file exception.
Member Function Documentation
virtual const char* std::exception::what () const [virtual], [noexcept]
Returns a C-style character string describing the general cause of the current error.
Reimplemented in std::bad_function_call, std::ios_base::failure, std::bad_typeid, std::bad_cast, std::runtime_error, std::future_error,
std::bad_exception, std::logic_error, std::bad_weak_ptr, and std::bad_alloc.
Author
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libstdc++ Tue Jun 10 2014 std::exception(3)