I tested this snipplet on busybox 1.19.4 and it works as expected.
So as Corona688 requests, I also must ask how the trap is being called. If there are redirections affecting stdin, maybe read is operating on /dev/null, in which case, it would just carry on since that's your default case statement and KEYHIT would be null...
Edit: My reply took too long.. Is your loop operating as,
I wonder what read works on then?
Maybe try read ... </dev/tty inside your trap
These 2 Users Gave Thanks to neutronscott For This Post:
Hi All,
i have a cron entry like
0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57 * * * * /amex/sssmonitor/dss_chk.ksh
and the script is like
#!/bin/ksh
file=`uname -n`
> /sunmast/projects/oasis/COREDEV/Dss$file.log
> /tmp/output_sss
today=`date`
varb=`ps -ef | grep... (5 Replies)
Pls this is emergency.I have written a script which is taking input from another script. and the contents of my second script are acting as functions to my main script.Now the problem is that in one of the functions i want the script ececution to stop and start when user enters any character r... (2 Replies)
Hi everyone,
when executing this command in unix:
echo "WM7 Fatal Alerts:", $(cat query1.txt) > a.csvIt works fine, but running this command in a shell script gives an error saying that there's a syntax error.
here is content of my script:
tdbsrvr$ vi hc.sh
"hc.sh" 22 lines, 509... (4 Replies)
I have some industrial ARM linux board with 2.6.34 Linux on it with Busybox
v1.15.0.
The https.conf is located in /etc/ and contains:
H:/root/web
In the www directory I also have 'cgi-bin' folder with chmod 777 and in that folder a file called 'testcgi'.
Now I start the server with... (1 Reply)
Hi All,
I have a script that I wrote on a bash shell, I use it to sort files from a directory into various other directories. I have an variable set, which is an array of strings, I then check each file against the array and if it is in there the script sorts it into the correct folder.
But... (5 Replies)
Hi All,
I am using geopts inside a function in shell script.
But it is doesnt seem to read the input args and I always gt empty value in o/p.
my code is
http://sparshmail.ad.infosys.com/owa/14.2.318.4/themes/base/pgrs-sm.gif
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#!/bin/ksh IFS=' '... (1 Reply)
Hi,
I'm trying to write shell scripts on busybox bash on windows and grep is not working for simple regular expression like
$ grep FEN *
bash: grep: Invalid argument
but the same grep works fine if use the single file instead of asterisk
$ grep FEN test
$
Am I doing something... (5 Replies)
Hello,
I'm trying to figure out a way to use a decode64 function in an embedded system who has few utilities, including busybox.
Right now have something like this (taken from "google base64-and-base85-encoding-awk-scripts" sorry, I'm not able to post urls yet)
_decode64()
{
&&... (4 Replies)
Discussion started by: chilicuil
4 Replies
LEARN ABOUT XFREE86
trap
trap(1) User Commands trap(1)NAME
trap, onintr - shell built-in functions to respond to (hardware) signals
SYNOPSIS
sh
trap [ argument n [n2...]]
csh
onintr [-| label]
ksh
*trap [ arg sig [ sig2...]]
DESCRIPTION
sh
The trap command argument is to be read and executed when the shell receives numeric or symbolic signal(s) (n). (Note: argument is scanned
once when the trap is set and once when the trap is taken.) Trap commands are executed in order of signal number or corresponding symbolic
names. Any attempt to set a trap on a signal that was ignored on entry to the current shell is ineffective. An attempt to trap on signal 11
(memory fault) produces an error. If argument is absent all trap(s) n are reset to their original values. If argument is the null string
this signal is ignored by the shell and by the commands it invokes. If n is 0 the command argument is executed on exit from the shell. The
trap command with no arguments prints a list of commands associated with each signal number.
csh
onintr controls the action of the shell on interrupts. With no arguments, onintr restores the default action of the shell on interrupts.
(The shell terminates shell scripts and returns to the terminal command input level). With the - argument, the shell ignores all inter-
rupts. With a label argument, the shell executes a goto label when an interrupt is received or a child process terminates because it was
interrupted.
ksh
trap uses arg as a command to be read and executed when the shell receives signal(s) sig. (Note that arg is scanned once when the trap is
set and once when the trap is taken.) Each sig can be given as a number or as the name of the signal. trap commands are executed in order
of signal number. Any attempt to set a trap on a signal that was ignored on entry to the current shell is ineffective. If arg is omitted
or is -, then the trap(s) for each sig are reset to their original values. If arg is the null (the empty string, e.g., "" ) string then
this signal is ignored by the shell and by the commands it invokes. If sig is ERR then arg will be executed whenever a command has a non-
zero exit status. If sig is DEBUG then arg will be executed after each command. If sig is 0 or EXIT for a trap set outside any function
then the command arg is executed on exit from the shell. The trap command with no arguments prints a list of commands associated with each
signal number.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), exit(1), ksh(1), sh(1), attributes(5)SunOS 5.10 23 Oct 1994 trap(1)