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Shell Programming and Scripting
Need code for updating second record to first record in shell scripting
Post 302976427 by Samah on Wednesday 29th of June 2016 08:22:05 AM
06-29-2016
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Hi,
I am new to UNIX scripting and woiuld appreicate your help...
Input file contains only one (but long) record:
aaaaabbbbbcccccddddd.....
Desired file:
NEW RECORD #new record (hardcoded) added as first record - its length is irrelevant#
aaaaa
bbbbb
ccccc
ddddd
...
...
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My input file like this
01,011600033,011600033,110516,0834,2,90,,2/
02,011600033,011103093,1,110317,0834,,2/
03,105581,,015,+00000416418,,,901,+00000000148,,,922,+00000000354,,/
49,+00000000000416920,00002/
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LEARN ABOUT DEBIAN
tinydyndns-update
tinydyndns-update(8) System Manager's Manual tinydyndns-update(8) NAME
tinydyndns-update - update TYPE A record in data.cdb SYNOPSIS
tinydyndns-update fqdn dynip DESCRIPTION
tinydyndns-update changes the data of a TYPE A record in data.cdb in the current directory. Other than tinydns-data(8), tinydndns-update does not know about the source file data but changes the binary database data.cdb directly. First tinydyndns-update checks if the given fqdn has a TYPE A record in data.cdb. Then it checks if the given IP address differs from the one in the TYPE A record in data.cdb, or if the record's timestamp should be updated. Finally if data.cdb needs to change, tinydyndns- update copies data.cdb to data.tmp, changes the IP address of the TYPE A record of fqdn to dynip in data.tmp, optionally adjusts time-to- live or time-to-die, and renames data.tmp to data.cdb. ENVIRONMENT
TTL time-to-live. The environment variable TTL overrides the default time-to-live in seconds (0 if TTD is set, otherwise 5). If TTL is not set or zero, the time-to-live of the record will not change. $TTL must be an integer. TTD time-to-die. $TTD must be an integer, specifying a number of seconds. If TTD is set, the timestamp of the record is set to the current time plus $TTD seconds, and TTL is set to zero by default, so that tinydns(8) interpretes the timestamp as time-to-die. Note: you probably want to adjust SOA ttl, or create a wildcard record, to prevent DNS caches from caching nxdomain, when using this feature. LOC location. $LOC must be two characters long. If LOC is set, it specifies the client location for records to be updated. EXIT CODES
If tinydyndns-update cannot find a TYPE A record for fqdn in data.cdb, it prints a warning and exits 114. If dynip does not differ from the IP address of the TYPE A record of fqdn in data.cdb, and the environment variable TTD is not set, tiny- dyndns-update prints a note and exits 0. tinydyndns-update exits 100 if it has trouble opening data.cdb, and leaves data.cdb unchanged. tinydyndns-update exits 111 on temporary error, and leaves data.cdb unchanged. If data.cdb was changed successfully, tinydyndns-update exits 0. FILES
./data.cdb ./data.tmp SEE ALSO
tinydyndns-data(8), tinydyndns-conf(8) http://smarden.org/tinydyndns/ AUTHOR
Gerrit Pape <pape@smarden.org> tinydyndns-update(8)