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Top Forums Shell Programming and Scripting How to get the line number from while read Post 302148102 by matrixmadhan on Friday 30th of November 2007 12:07:43 AM
Old 11-30-2007
its much more comfortable with awk

try this,

Code:
awk '{ print $0, NR }' b

this prints the content read from a line and the line number

to skip first line and print only the first 4 characters from the remaining
Code:
awk ' NR != 1 { print substr($0, 1, 4) }' b

 

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TXTRecordCreate(3DNS_SD)			      DNS Service Discovery Library Functions				  TXTRecordCreate(3DNS_SD)

NAME
TXTRecordCreate, TXTRecordDeallocate, TXTRecordSetValue, TXTRecordRemoveValue, TXTRecordGetLength, TXTRecordGetBytesPtr, TXTRecordCon- tainsKey, TXTRecordGetValuePtr, TXTRecordGetCount, TXTRecordGetItemAtIndex - DNS TXT record manipulation functions SYNOPSIS
cc [ flag ... ] file ... -ldns_sd [ library ... ] #include <dns_sd.h> void TXTRecordCreate(TXTRecordRef *txtRecord, uint16_t bufferLen, void *buffer); void TXTRecordDeallocate(TXTRecordRef*txtRecord); DNSServiceErrorType txtRecord(TXTRecordRef *txtRecord, const char *key, uint8_t valueSize, const void *value); DNSServiceErrorType TXTRecordRemoveValue(TXTRecordRef *txtRecord, const char *key); uint16_t TXTRecordGetLength(const TXTRecordRef *txtRecord); const void *TXTRecordGetBytesPtr(const TXTRecordRef *txtRecord); int *TXTRecordContainsKey(uint16_t *txtLen, const void *txtRecord, const char *key); const void *TXTRecordGetValuePtr(uint16_t *txtLen, const void *txtRecord, const char *key, uint8_t *valueLen); uint16_t *TXTRecordGetCount(uint16_t *txtLen, const void *txtRecord); DNSServiceErrorType TXTRecordGetItemAtIndex(uint16_t *txtLen, const void *txtRecord, uint16_t *index, uint16_t *keyBufLen, char *key, uint8_t *valueLen, const void **value); DESCRIPTION
These functions in the libdns_sd library allow applications to create and to manipulate TXT resource records. TXT resource records enable applications to include service specific information, other than a host name and port number, as part of the service registration. ATTRIBUTES
See attributes(5) for description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.11 20 Aug 2007 TXTRecordCreate(3DNS_SD)
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