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Top Forums Shell Programming and Scripting averaging specific column of multiple files Post 302585389 by ida1215 on Wednesday 28th of December 2011 09:46:55 AM
Old 12-28-2011
averaging specific column of multiple files

Hi all, I'm needing help again on scripting. I have weekly files with 3 columns, and I need to do monthly averaging on the values on column 3, the file naming convention is as follows:
Code:
20000105.u- 2000:year 01:month 05:day
20000112.u
20000119.u
20000126.u
20000202.u
20020209.u

I need to do a loop that will read the month part of each filename and do the average of column 3 for all the files falling on the same month. the desired output will be something like:
Code:
200001.u containing 3 columns still:
cols.1 & 2: the values are the same for all files and so just need to append them to the final output
col.3: average of col. 3 from 20000105.u - 20000126.u

Suggestions are very much welcome and appreciated. thanks much.

On the side, I had another question partly unrelated to the ones on top. Is there a way to change the filename on a directed output automatically, like for instance in the pseudo-code below. thanks again
Code:
list="$(ls *.u)"
for i in $list; do
    command > "$i".out
done

directed output name: file.u.out
desired output name: file.out

thanks a lot,Smilie
 

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IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
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