03-28-2014
Quote:
1. I am trying to store this values in one variable like (temp = 84|589|60|5)
Because I have hundreds or thousands of lines and don't know how many enries are there. So I am planning to give seperator (|) to store values.
2. In both SunOS and Linux systeam
3. I am using
#!/bin/ksh
4. no tools directly in Linux and Sunos systeam
Thanks you
What are you going to do with this variable with hundreds of thousands of values separated by vertical bars in it once you get it? If you're going to process each value, you'd probably be much better off processing each value as you find it piped into a loop to process the values. Storing a set of values in a variable as a string that is about a quarter of a megabyte long and then processing that string doesn't seem like a good approach.
And, once more:
What have you tried so far? If you refuse to answer this question, it will likely take a lot longer to get a resolution to your problem. We're here to help you learn how to use Linux and UNIX tools; not to write your code for you. And even more importantly, if you show us what you've done, we might get a much better idea of what you're trying to do!
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I would like to substitute a phrase which contains square brackets.
change TO
how?
Thanks (2 Replies)
Discussion started by: gilead29
2 Replies
2. Shell Programming and Scripting
One of the senior administrators gave me a shell script to modify and it begins as follows:
if ] && ]
{more code follows}
Why the double square brackets? (10 Replies)
Discussion started by: mojoman
10 Replies
3. Shell Programming and Scripting
Hi
First apologies if this has been raised before.
I've got the following in a ksh script:
if ]
For some reason this does not work. But if I remove the double square brackets to:
if
This works.
I thought ksh supported the ]. Or is there more to it?
Thanks in advance. (3 Replies)
Discussion started by: tsu3000
3 Replies
4. Shell Programming and Scripting
Hi,
I just came across an interesting shell script syntax like the one below:
] && (trap 'rm -rf ${WORK_DIR}/*.$$; echo "\n\nInterrupted !!\n\n"; exit 4' 1 2 3 15)
Can someone please explain the code snippet above?
The trap command bit is fine but ] && is the hazy part.
Generally we use an... (2 Replies)
Discussion started by: King Nothing
2 Replies
5. UNIX for Dummies Questions & Answers
Hello,
Can someone please explain to me the following line,
] && break
I do not understand why two test square brackets are used.
Thanks,
Shantanu
---------- Post updated at 03:38 PM ---------- Previous update was at 03:35 PM ----------
And, also why there's a $ before (echo $c |... (5 Replies)
Discussion started by: Shan_u2005
5 Replies
6. Shell Programming and Scripting
Hi All,
I have a text file which looks like this:
computer programming
systems engineering
I want to get rid of these square brackets and also the text that is inside these brackets. So that my final text file looks like this:
computer programming
systems engineering
I am using... (3 Replies)
Discussion started by: shoaibjameel123
3 Replies
7. UNIX for Dummies Questions & Answers
Hi frieds, I don't understand the difference between single square bracket and double square brackets in a IF condition.
Ex.
if ;
then
RETURNJOB=1
else
RETURNJOB=0
fi
It run, but this
if ];
then
RETURNJOB=1
else
RETURNJOB=0
fi (4 Replies)
Discussion started by: dogshort
4 Replies
8. Shell Programming and Scripting
I wanted to compare the value inside the Squre bracket after Colon ( : ) based on any value(seperated by or operator | ) inside the variable Thread and if match found then wnated to store in output file
Input file :
20140320 00:08:43.918 INO 35] - Corporate hub is
20140320 00:08:43.918... (2 Replies)
Discussion started by: nes
2 Replies
9. Shell Programming and Scripting
Hello all,
I have the following problem:
$ cat infile
this is spam and i need this too
this is spam and i need this too
$ perl -nwe '$_ =~ /]+ \]+)\]\]*\]? (\+)$/; print "$1 - $2\n";' infile
i need this - too
i need this - and i need this too
I am not sure how many occurences of... (13 Replies)
Discussion started by: zaxxon
13 Replies
10. Shell Programming and Scripting
Hi All,
Hope you all are doing good. Yesterday in my project i came across a scenario which i can not guess why it was working in one region and why it was not in another region. Please find my issue below.
I am using AIX version 6.0 of UNIX in my project, in shell scripting i have the... (1 Reply)
Discussion started by: mad man
1 Replies
LEARN ABOUT DEBIAN
mtbl_sorter
MTBL_SORTER(3) MTBL_SORTER(3)
NAME
mtbl_sorter - sort a sequence of unordered key-value pairs
SYNOPSIS
#include <mtbl.h>
Sorter objects:
struct mtbl_sorter *
mtbl_sorter_init(const struct mtbl_sorter_options *sopt);
void
mtbl_sorter_destroy(struct mtbl_sorter **s);
mtbl_res
mtbl_sorter_add(struct mtbl_sorter *s,
const uint8_t *key, size_t len_key,
const uint8_t *val, size_t len_val);
mtbl_res
mtbl_sorter_write(struct mtbl_sorter *s, struct mtbl_writer *w);
struct mtbl_iter *
mtbl_sorter_iter(struct mtbl_sorter *s);
Sorter options:
struct mtbl_sorter_options *
mtbl_sorter_options_init(void);
void
mtbl_sorter_options_destroy(struct mtbl_sorter_options **sopt);
void
mtbl_sorter_options_set_merge_func(
struct mtbl_sorter_options *sopt,
mtbl_merge_func fp,
void *clos);
void
mtbl_sorter_options_set_temp_dir(
struct mtbl_sorter_options *sopt,
const char *temp_dir);
void
mtbl_sorter_options_set_max_memory(
struct mtbl_sorter_options *sopt,
size_t max_memory);
DESCRIPTION
The mtbl_sorter interface accepts a sequence of key-value pairs with keys in arbitrary order and provides these entries in sorted order.
The sorted entries may be consumed via the mtbl_iter interface using the mtbl_sorter_iter() function, or they may be dumped to an
mtbl_writer object using the mtbl_sorter_write() function. The mtbl_sorter implementation buffers entries in memory up to a configurable
limit before sorting them and writing them to disk in chunks. When the caller has finishing adding entries and requests the sorted output,
entries from these sorted chunks are then read back and merged. (Thus, mtbl_sorter(3) is an "external sorting" implementation.)
Because the MTBL format does not allow duplicate keys, the caller must provide a function which will accept a key and two conflicting
values for that key and return a replacement value. This function may be called multiple times for the same key if the same key is inserted
more than twice. See mtbl_merger(3) for further details about the merge function.
mtbl_sorter objects are created with the mtbl_sorter_init() function, which requires a non-NULL sopt argument which has been configured
with a merge function fp.
mtbl_sorter_add() copies key-value pairs from the caller into the mtbl_sorter object. Keys are specified as a pointer to a buffer, key, and
the length of that buffer, len_key. Values are specified as a pointer to a buffer, val, and the length of that buffer, len_val.
Once the caller has finished adding entries to the mtbl_sorter object, either mtbl_sorter_write() or mtbl_sorter_iter() should be called in
order to consume the sorted output. It is a runtime error to call mtbl_sorter_add() on an mtbl_sorter object after iteration has begun, and
once the sorted output has been consumed, it is also a runtime error to call any other function but mtbl_sorter_destroy() on the depleted
mtbl_sorter object.
Sorter options
temp_dir
Specifies the temporary directory to use. Defaults to /var/tmp.
max_memory
Specifies the maximum amount of memory to use for in-memory sorting, in bytes. Defaults to 1 Gigabyte. This specifies a limit on the
total number of bytes allocated for key-value entries and does not include any allocation overhead.
merge_func
See mtbl_merger(3). An mtbl_merger object is used internally for the external sort.
RETURN VALUE
If the merge function callback is unable to provide a merged value (that is, it fails to return a non-NULL value in its merged_val
argument), the sort process will be aborted, and mtbl_sorter_write() or mtbl_iter_next() will return mtbl_res_failure.
mtbl_sorter_write() returns mtbl_res_success if the sorted output was successfully written, and mtbl_res_failure otherwise.
05/29/2012 MTBL_SORTER(3)