10-24-2008
How to print string on screen according the fixed length?
Problem:
entry_name="joke:hello:yellow:blue:default"
print("%d %-12s\t%-10s\t%-5s\n", $i, $entry_name....);
I just want to print the output like this
index entry value ....
1 joke:hello:y 0 123 567
ellow:blue:d
efault
My step:
get the length of the entry_name
i=0
entry_length=$(echo "$entry_name" | awk '{print length($entry_name)}')
((j=entry_length/12))
while((i<j))
do
tmp=$(echo "$entry_name" | awk '{print substring($entry_name, i*12, 12)}')
printf("%-12s\n", tmp);
((i=i+1))
done
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print(9E) Driver Entry Points print(9E)
NAME
print - display a driver message on system console
SYNOPSIS
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int prefixprint(dev_t dev, char *str);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). This entry point is required for block devices.
PARAMETERS
dev Device number.
str Pointer to a character string describing the problem.
DESCRIPTION
The print() routine is called by the kernel when it has detected an exceptional condition (such as out of space) in the device. To display
the message on the console, the driver should use the cmn_err(9F) kernel function. The driver should print the message along with any
driver specific information.
RETURN VALUES
The print() routine should return 0 for success, or the appropriate error number. The print routine can fail if the driver implemented a
non-standard print() routine that attempted to perform error logging, but was unable to complete the logging for whatever reason.
SEE ALSO
cmn_err(9F)
Writing Device Drivers
SunOS 5.10 15 Sep 1992 print(9E)