Thanks for you replies and advice. This is not a homework assignment. This is a part of my code development. Currently i am using as below. Please let me know whether this is right way or is there any other simple way to pad the spaces.
Thanks.
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I will raise my question under proper category by following post rules. Please close this thread.
Thanks
Last edited by Don Cragun; 12-25-2013 at 03:00 PM..
Reason: Add CODE tags
Hi
I am looping through the contents of a file as follows
cat file |while read inrec
do
echo $inrec >> $TMP
done
(obviously this isn't all i am doing as it would be pointless but for the sake of the problem this is the important bit)
The file has fields which are separated by... (1 Reply)
How to append constant No of spaces suppose 52 at end of each line in a file (xyz) excluding first and last line.
Please Help me out for the same. (1 Reply)
hi i have a file like (every string contains 16 chars)
CTL1330000000000
0000 00
008000
0080000000
i need to form a line and write to a file
CTL13300000000000000 00008000 0080000000
total chars should be 64
... (2 Replies)
HI
In my script, i am reading the input from the user and want to find the length of the string.
The input may contain leading spaces. Right now, when leading spaces are there, they are not counted.
Kindly help me
My script is like below. I am using the ksh.
#!/usr/bin/ksh
echo... (2 Replies)
Hi,
I have a problem where I need to append few spaces(say 10 spaces) for each line in a file whose length is say(100 chars) and others leave as it is.
I tried to find the length of each line and then if the length is say 100 chars then tried to write those lines into another file and use a sed... (17 Replies)
child_amt=$amount
prev_line="$prev_line $child_amt"
i am getting the result like this
21234567890001343 000001004OLFXXX029100020091112 0000060
but i want 8 spaces between the eg:
21234567890001343 000001004OLFXXX029100020091112 0000060
how can i do this in .ksh (1 Reply)
i/o file:
abc,efg,xyz
Required o/p file:
"abc (Value + blank spaces=16) " ,"efg (Value +blank spaces=15) " ,"xyz (Value+ blank spaces =20) "
In short input file value stores in result file with " i/p Value " added with spaces and are of fixed size like 16,15,20
How to do using... (2 Replies)
Right now, my code is:
s/Secondary Ins./Secondary Ins.\
1/g
It's adding a 1 as soon as it finds Secondary Ins.
Primary Ins.: MEDICARE B DMERC Secondary Ins.
1: CONTINENTAL LIFE INS
What I really want to achieve is having a 1 added on the next line that contain "Secondary Ins." It... (4 Replies)
Hello, could you please help with this one. I have an input file like this:
123,4567,89000
123456789,9876543,12
and for the output I need strings to be with the fixed length, let's say 15, and if the string is -lt 15 to be populated with blanks at the end until it reach 15, like this:
123 ,4567... (1 Reply)
I want to make a script to read row by row and find its length. If the length is less than my required length then i hav to append spaces to that paritucular row. Each row contains special characters, spaces, etc.
For example my file contains ,
12345 abcdef
234 abcde
89012 abcdefgh
... (10 Replies)
Discussion started by: Amrutha24
10 Replies
LEARN ABOUT MOJAVE
madvise
MADVISE(2) BSD System Calls Manual MADVISE(2)NAME
madvise, posix_madvise -- give advice about use of memory
SYNOPSIS
#include <sys/mman.h>
int
madvise(void *addr, size_t len, int advice);
int
posix_madvise(void *addr, size_t len, int advice);
DESCRIPTION
The madvise() system call allows a process that has knowledge of its memory behavior to describe it to the system. The advice passed in may
be used by the system to alter its virtual memory paging strategy. This advice may improve application and system performance. The behavior
specified in advice can only be one of the following values:
MADV_NORMAL Indicates that the application has no advice to give on its behavior in the specified address range. This is the system
default behavior. This is used with madvise() system call.
POSIX_MADV_NORMAL
Same as MADV_NORMAL but used with posix_madvise() system call.
MADV_SEQUENTIAL Indicates that the application expects to access this address range in a sequential manner. This is used with madvise()
system call.
POSIX_MADV_SEQUENTIAL
Same as MADV_SEQUENTIAL but used with posix_madvise() system call.
MADV_RANDOM Indicates that the application expects to access this address range in a random manner. This is used with madvise() system
call.
POSIX_MADV_RANDOM
Same as MADV_RANDOM but used with posix_madvise() system call.
MADV_WILLNEED Indicates that the application expects to access this address range soon. This is used with madvise() system call.
POSIX_MADV_WILLNEED
Same as MADV_WILLNEED but used with posix_madvise() system call.
MADV_DONTNEED Indicates that the application is not expecting to access this address range soon. This is used with madvise() system call.
POSIX_MADV_DONTNEED
Same as MADV_DONTNEED but used with posix_madvise() system call.
MADV_FREE Indicates that the application will not need the information contained in this address range, so the pages may be reused
right away. The address range will remain valid. This is used with madvise() system call.
MADV_ZERO_WIRED_PAGES
Indicates that the application would like the wired pages in this address range to be zeroed out if the address range is
deallocated without first unwiring the pages (i.e. a munmap(2) without a preceding munlock(2) or the application quits).
This is used with madvise() system call.
The posix_madvise() behaves same as madvise() except that it uses values with POSIX_ prefix for the advice system call argument.
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.
ERRORS
madvise() fails if one or more of the following are true:
[EINVAL] The value of advice is incorrect.
[EINVAL] The address range includes unallocated regions.
[ENOMEM] The virtual address range specified by the addr and len are outside the range allowed for the address space.
LEGACY SYNOPSIS
#include <sys/types.h>
#include <sys/mman.h>
int
madvise(caddr_t addr, size_t len, int advice);
int
posix_madvise(caddr_t addr, size_t len, int advice);
The include file <sys/types.h> is necessary. The type of addr has changed.
SEE ALSO mincore(2), minherit(2), mprotect(2), msync(2), munmap(2), compat(5)HISTORY
The madvise function first appeared in 4.4BSD. The posix_madvise function is part of IEEE 1003.1-2001 and was first implemented in Mac OS X
10.2.
BSD June 9, 1993 BSD