I need to extract the first 16 bytes of a filename (AIX 4.3) which consists of
an IP address (nnn.nnn.nnn.nnn), and move that to first 16 positions in the
file itself, plus adding a pipe (|) sign for a delimiter, and save the IP
address as a file name with a .dat extension, before loading the contents into
a table.
My predecessor concocted the following:
#!/usr/bin/ksh
FN=$1
IP=`echo $FN|cut -c1-16`
sed "s/Report by Hosts/$IP| Report by Hosts/" $FN > newfile.dat
#-- End of file
which is great for a single file at a time.
Right now I have to perform this surgery on 19 986 files, which is in one
place.
Using the script above would take me over 20 000 hours.
Any way I can grab the files one at the time based on a ls command, and invoke
the script, and to end up when the last file has been processed.
ALTERNATIVE:
Each file contains the IP address which has to move into the first position
after a string on line 13 which you guessed it: is called 'IP Address:'. Is
their a way vi could be used to achieve the same result?
Any input would be appreciated,
Johan Muller
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Author: Johan Muller
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