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Old 11-12-2008, 11:10 AM   #1
rmarkin
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Registered: Sep 2003
Location: Fernley, NV
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bash scripting question


Hello everyone,

Code:
#!/bin/sh
REMOTE_NAME=DirectTV_RC16
for digit in $(echo $1 | sed -e 's/./& /g'); do
irsend --device=/dev/lircd1 SEND_ONCE $REMOTE_NAME $digit
sleep 0.4 # note, you may have to tweak the interdigit delay up a bit
done
irsend --device=/dev/lircd1 SEND_ONCE $REMOTE_NAME select
Currently if I pass a value to the above script such as "one", I get the following results. I would like the script to run the irsend command once and pass the value "one" instead of the below behavior.


Code:
robert@myth-dvr:~$ /usr/local/bin/change_channel.sh one
irsend: command failed: SEND_ONCE DirectTV_RC16 o
irsend: unknown command: "o"
irsend: command failed: SEND_ONCE DirectTV_RC16 n
irsend: unknown command: "n"
irsend: command failed: SEND_ONCE DirectTV_RC16 e
irsend: unknown command: "e"
robert@myth-dvr:~$

Any ideas would be greatly appreciated.

Robert
 
Old 11-12-2008, 01:47 PM   #2
jan61
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Registered: Jun 2008
Posts: 235

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Moin

I don't exactly understand, what you want. Which values do you expect as $1? If you want to split the argument into single digits, you first have to assure that the argument is a number. Actually your sed splits every argument (even if it is a number or not) into single characters.

Maybe this sed helps:
Code:
sed -e 's/[0-9]/& /g'
Jan
 
Old 11-12-2008, 01:57 PM   #3
unSpawn
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The "for" loop breaking up stuff?
Code:
#!/bin/bash
DEVICE="/dev/lircd1"
REMOTE_NAME="DirectTV_RC16"
CMD="irsend --device=$DEVICE SEND_ONCE $REMOTE_NAME"
$CMD "$@"; $CMD select
exit 0
 
Old 11-13-2008, 01:52 PM   #4
lumak
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Registered: Aug 2008
Location: Phoenix
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I think I know what you are trying to do... but I'm not sure...

If you are pressing a number combination 1 2 3 4 that gets cached then translated and separated with your for loop... then you really just need spaces in between them.

Code:
function function_name () {
COMMANDS="$1"
# will automatically loop with each word.  No sed needed.
# if you need to change the field separator to anything other than white space... you need to change an environment variable
# I forgot what it is at the moment.
for digit in $1; do
...
done
...
}

# Each word will be treated as a separate loop through the for loop. 
function_name "one two three four"
However, it would be better to not have to quote the numbers and just use "$@" in place of "$1"


It's kind of hard to understand what you are trying to do with the for command if you don't tell us more information.
 
  


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