07-14-2008
Merging lines in a file
Hi,
I want to merge the lines starting with a comma symbol with the previous line of the file.
Input :
cat file.txt
name1,name2
,name3,name4
emp1,emp2,emp3
,emp4
,emp5
user1,user2
,user3
Output
name1,name2,name3,name4
emp1,emp2,emp3,emp4,emp5
user1,user2,user3
IS there any command in unix to do this conversion for the entire file?
Mohan
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LEARN ABOUT OPENSOLARIS
net_instance_notify_register
net_instance_notify_register(9F) Kernel Functions for Drivers net_instance_notify_register(9F)
NAME
net_instance_notify_register, net_instance_notify_unregister - add/delete a function to be called for changes to an instance
SYNOPSIS
#include <sys/hook.h>
#include <sys/neti.h>
int net_instance_notify_register(net id_t net_id,
hook_notify_fn_t *callback, void *arg);
int net_instance_notify_unregister(net id_t net_id,
hook_notify_fn_t *callback);
typedef int (* hook_notify_fn_t)(hook_notify_cmd_t command,
void *arg, const char *name1, const char *name2, const char
*name3);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
netid value from either callback registered with net_instance_register() or net_zoneidtonetid().
callback function to call when a change occurs.
arg pointer to pass into the callback() function when a change occurs.
DESCRIPTION
The net_instance_notify_register() function registers a function represented by the pointer callback to be called when there is a new
instance added or removed from the given network instance (represented by netid.)
The net_instance_notify_unregister() function indicates that there is no longer any desire to receive notification of changes to the
instance through function calls to the specified callback.
Multiple callback functions may be registered through this interface. The same set of parameters is passed to each callback function. The
memory referenced through the pointers passed to the callback should be treated as pointing to read-only memory. Changing this data is
strictly prohibited.
The function that is called must not block any other events.
The arguments passed through to the callback are as follows (the command is either HN_REGISTER or HN_UNREGISTER):
name1 is the netid represented as a string.
name2 is NULL.
name3 is the name of the instance being added/removed
RETURN VALUES
If these functions succeed, 0 is returned. Otherwise, the following error is returned:
EEXIST the given callback function is already registered.
CONTEXT
These functions may be called from user or kernel context.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5), net_instance_register(9F), net_instance_unregister(9F), net_zoneidtonetid(9F)
SunOS 5.11 30 Oct 2008 net_instance_notify_register(9F)