10-08-2008
Expect Script - While file exist
Hi:
Can anyone help me with the while loop in expect script. Following is my scenario:
1. one of my process is running and looking for a file
2. as soon as the file is dropped the proces then processes the file and creates a control file ".ctl" to indicate end of process for that file
3. after the above process, I need to rename the ".ctl" file to ".done" as part of the second processing
How do I write an expect script to check if the file exists in the directory and then only rename the file from ".ctl" to ".done" extension. I can work with the if condition, but my expect script is the one that drops the file and will have to wait till the ".ctl" file is created by the process and then my expect script will rename the .ctl file to .done
set filename "abc"
expect ">$ "
while { [file exists $flname.ctl] }\
{
expect ">$ "
puts "$flname.ctl exists\r"
expect ">$ "
send "mv $flname.ctl $flname.done\r"
}
For some reason the above code doesnt do anything. I am not sure if it's the syntax or something that I am overlooking. Or is it plain that I cant use "file exists" command in a while loop.
Please advice
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KTRANS(1) General Commands Manual KTRANS(1)
NAME
ktrans - language transliterator
SYNOPSIS
ktrans
DESCRIPTION
The ktrans program installs itself between the keyboard and /dev/cons and transliterates typed letter sequences into characters in lan-
guages that do not use the Latin character set. The language is selected by typing a control character:
ctl-E return to default English mode (no transliteration).
ctl-G Japanese hiragana: interpret lower-case letters as a Hepburn representation of hiragana. In this mode, typing ctl-T looks up the
last `word' in a hiragana-kanji dictionary and replaces it. Subsequent ctl-T characters cycle through the possibilities. A word is
the longest immediately preceding unbroken string of hiragana characters.
ctl-K Japanese katakana.
ctl-R Russian: interpret letters as Cyrillic; the transliteration is mostly phonetic, with ' for myagkij-znak (), '' for tverdyj-znak ()
yo for , j for i-kratkaya ().
ctl-L Greek.
FILES
/dev/kbd
SOURCE
/sys/src/cmd/ktrans
SEE ALSO
81/2(1)
BUGS
Considerably more sophistication is required to support ideographic languages properly.
There is no way to generate the control characters literally.
KTRANS(1)