Hello,
i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem.
my var1 is a string constructed like this:
filename1 filerev1 filepath1
my var2 is another string constructed like this:
filename2 filerev2 filepath2
when i do... (2 Replies)
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
Hi all,
I have a variable say var1 (output from somewhere, which I can't change)which store something like this:
echo $var1
name=fred
age=25
address="123 abc"
password=pass1234
how can I make the variable $name, $age, $address and $password contain the info?
I mean do this in a... (1 Reply)
Dear all,
I have basic knowledge of Unix script and her I am trying to process variable length and variable format CSV file.
The file length will depend on the numbers of Earnings/Deductions/Direct Deposits.
And
The format will depend on whether it is Earnings/Deductions or Direct Deposits... (2 Replies)
Hi,
I am trying to do the following thing
var='date'
$var
Above command substitutes date for and in turn runs the date command and i am getting the todays date value.
I am trying to do the same thing as following, but facing some problems,
unique_host_pro="sed -e ' /#/d'... (3 Replies)
can anyone please help me with this:
i have written a shell script and a stored procedure which has one OUT parameter. now i want to use that out parameter as an input to the unix script but i am getting an error as variable not found. below are the unix scripts and stored procedure...
... (4 Replies)
Hi all,
Hereby wish to have your advise for below:
Main concept is
I intend to get current directory of my script file.
This script file will be copied to /etc/init.d.
A string in this copy will be replaced with current directory value.
Below is original script file:
... (6 Replies)
Hi All,
I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I... (5 Replies)
I have a below syntax its working fine...
var12=$(ps -ef | grep apache | awk '{print $2,$4}')
Im getting expected output as below:
printf "%b\n" "${VAR12}"
dell 123
dell 456
dell 457
Now I wrote a while loop.. the output of VAR12 should be passed as input parameters to while loop and results... (5 Replies)
Discussion started by: sam@sam
5 Replies
LEARN ABOUT OSX
cache_release_value
cache_set_and_retain(3) BSD Library Functions Manual cache_set_and_retain(3)NAME
cache_set_and_retain, cache_get_and_retain, cache_release_value, cache_remove -- Routines used to manage cached values
SYNOPSIS
#include <cache.h>
int
cache_set_and_retain(cache_t *cache, void *key, void *value, size_t cost);
int
cache_get_and_retain(cache_t *cache, void *key, void **value_out);
int
cache_release_value(cache_t *cache, void *value);
int
cache_remove(cache_t *cache, void *key);
DESCRIPTION
These routines are used to manipulate values added to an in memory cache created by cache_create(3).
cache_set_and_retain() Adds value with cost to cache and associates it with key. The caller retains a reference to value that will prevent
value from being evicted from the cache until value is released in cache_release_value().
cache_get_and_retain() Fetches value for key from cache and places value in value_out. The caller retains a reference to value that will
prevent value from being evicted from the cache until value is release in cache_release_value().
cache_release_value() Releases a reference on value back to cache so that value may be evicted. Signals that the client is not actively
using value and will use cache_get_and_retain() before using again.
cache_remove() Removes the value associated with key from cache. Note that if the value is referenced by a client, the value will not be
finalized until the reference is released using cache_release_value().
RETURN VALUES
All functions return 0 for success and non-zero for failure. The value ENOENT (see errno.h) indicates that a key or value passed as an argu-
ment does not exist in the cache. EINVAL is used for invalid arguments.
EXAMPLE
The following example attempts to fetch a value from a cache using a key. If the value is not present in the cache then it is created and
added to the cache. The value is then used and released back to the cache to allow the cache to evict it when needed.
cache_t *mycache;
cache_create("com.mycompany.mycache", &cache_attributes, &mycache);
void *mykey = my_create_key();
void *myvalue = NULL;
if (cache_get_and_retain(mycache, mykey, &myvalue) != 0) {
myvalue = my_create_value_from_key(mykey);
cache_set_and_retain(mycache, mykey, myvalue, 0);
}
my_use_value(value);
cache_release_value(mycache, myvalue);
SEE ALSO cache(3)Darwin May 7, 2009 Darwin