Full Discussion: Split values using awk
Top Forums UNIX for Beginners Questions & Answers Split values using awk Post 303046301 by Skrynesaver on Thursday 30th of April 2020 08:00:51 AM
Old 04-30-2020
$ cat ~/tmp.dat
Name , Company_Worked (Header)

$ perl -ne 'chomp;($name,$emp)=split/,/;for (split/;/,$emp){print "$name, $_\n";}' ~/tmp.dat
Name ,  Company_Worked (Header)
Asley, IBM
Asley, Amazon
Asley, BOA
Asley, Google
King.Jr, Wipro
King.Jr, Microsoft
King.Jr, AMZ

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insq(9F)						   Kernel Functions for Drivers 						  insq(9F)

insq - insert a message into a queue SYNOPSIS
#include <sys/stream.h> int insq(queue_t *q, mblk_t *emp, mblk_t *nmp); INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). PARAMETERS
q Pointer to the queue containing message emp. emp Enqueued message before which the new message is to be inserted. mblk_t is an instance of the msgb(9S) structure. nmp Message to be inserted. DESCRIPTION
insq() inserts a message into a queue. The message to be inserted, nmp, is placed in q immediately before the message emp. If emp is NULL, the new message is placed at the end of the queue. The queue class of the new message is ignored. All flow control parameters are updated. The service procedure is enabled unless QNOENB is set. RETURN VALUES
insq() returns 1 on success, and 0 on failure. CONTEXT
insq() can be called from user or interrupt context. EXAMPLES
This routine illustrates the steps a transport provider may take to place expedited data ahead of normal data on a queue (assume all M_DATA messages are converted into M_PROTO T_DATA_REQ messages). Normal T_DATA_REQ messages are just placed on the end of the queue (line 16). However, expedited T_EXDATA_REQ messages are inserted before any normal messages already on the queue (line 25). If there are no normal messages on the queue, bp will be NULL and we fall out of the for loop (line 21). insq acts like putq(9F) in this case. 1 #include 2 #include 3 4 static int 5 xxxwput(queue_t *q, mblk_t *mp) 6 { 7 union T_primitives *tp; 8 mblk_t *bp; 9 union T_primitives *ntp; 10 11 switch (mp->b_datap->db_type) { 12 case M_PROTO: 13 tp = (union T_primitives *)mp->b_rptr; 14 switch (tp->type) { 15 case T_DATA_REQ: 16 putq(q, mp); 17 break; 18 19 case T_EXDATA_REQ: 20 /* Insert code here to protect queue and message block */ 21 for (bp = q->q_first; bp; bp = bp->b_next) { 22 if (bp->b_datap->db_type == M_PROTO) { 23 ntp = (union T_primitives *)bp->b_rptr; 24 if (ntp->type != T_EXDATA_REQ) 25 break; 26 } 27 } 28 (void)insq(q, bp, mp); 29 /* End of region that must be protected */ 30 break; . . . 31 } 32 } 33 } When using insq(), you must ensure that the queue and the message block is not modified by another thread at the same time. You can achieve this either by using STREAMS functions or by implementing your own locking. SEE ALSO
putq(9F), rmvq(9F), msgb(9S) Writing Device Drivers STREAMS Programming Guide WARNINGS
If emp is non-NULL, it must point to a message on q or a system panic could result. SunOS 5.10 9 Jul 2001 insq(9F)

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