[RndTbl] Korn shell script debugging
Gilbert E. Detillieux
gedetil at cs.umanitoba.ca
Fri Jan 3 15:39:55 CST 2014
On 2014-01-03 15:19, Kevin McGregor wrote:
> I've got a Korn shell script which I'm trying to debug with the aid of
> the "-x" switch, and it works for a while (i.e. as the script executes)
> until a function is called, then the shell stops displaying the commands
> as it executes. When the function returns, the commands are displayed again.
> How do I get it to display commands for the entire script?
A quick Google search for "korn shell xtrace stops working within
functions" came up with this page...
... wherein it states...
"When set at the global level, the xtrace option applies to the main
script and to any POSIX-style functions (those created with the name ()
syntax). If the code you are trying to debug calls function-style
functions that are defined elsewhere (e.g., in your .profile or
environment file), you can trace through these in the same way with an
option to the typeset command. Just enter the command typeset -ft
functname, and the named function will be traced whenever it runs. Type
typeset +ft functname to turn tracing off. You can also put set -o
xtrace into the function body itself, which is good when the function is
within the script being debugged."
This behaviour may be different in different implementations of ksh,
Gilbert E. Detillieux E-mail: <gedetil at muug.mb.ca>
Manitoba UNIX User Group Web: http://www.muug.mb.ca/
PO Box 130 St-Boniface Phone: (204)474-8161
Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609
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