05-27-2011
Problem with searching and then editing a file through shell.
Hi,
I have searched through this forum as there are many similar entries but could'nt get one of them to work, either that or they were just different to what I needed.
Basically I have a file, recordsDatabase. In this file are a few different fields. There is a unique identifier eg 001 which is a variable the user enters into the application.
I then want to search through the file for the unique identifier field and once the right line has been found prompt the user to enter new information which will then write over the old record and save.
The only part of the code I am struggling with is the part to actually open and edit the file.. I know sed is definately the way forward but I can't for the life of me figure out how to do it...
Any help would be greatly appreciated.
Mikey
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VM(1) mgetty VM(1)
NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts
ACTIONS
beep options [<frequency [<length in 0.001sec>]]>
diagnostics options device name (e.g. ttyS2
dial options phone number
help
play options [<file names]+>
record options file name
shell options [<shell script [shell options]]>
wait options [<time in seconds]>
devicetest
OPTIONS
-c n use compression type n
-d n set i/o device
-t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7>
-l s set device string (e.g. -l ttyS2:ttyC0)
-v verbose output
-w use off / on hook signal from local handset to start and stop recording
-x n set debug level
-L n set maximum recording length in sec
-P print first DTMF tone on stdout and exit
-R read and print DTMF string on stdout and exit
-S s set default shell for shell scripts (e.g. -S /bin/sh)
-T n set silence timeout in 0.1sec
-V n set silence threshold to <n> (0-100%%)
SEE ALSO
vgetty(1)
POD ERRORS
Hey! The above document had some coding errors, which are explained below:
Around line 30:
You forgot a '=back' before '=head1'
Around line 32:
'=item' outside of any '=over'
Around line 71:
You forgot a '=back' before '=head1'
perl v5.10.1 2010-04-04 VM(1)