Hello All,
I am a teacher at a local high school, and we have put together a small computer and loaded a linux distro onto it for the students to experiment with, because 20 children share the computer, it is hard to keep track of there home directorys,
i was wondering if i could find a script... (10 Replies)
Hi All,
I am newbie for Unix. I want to copy a directory from one location to other. Can any one help me by providing the command to do following task.
thanks in advance,
Rakesh (2 Replies)
Hi,
Just want to be sure that if I write a directory like:
/documents/script.pl
is the same as to write:
/documents//script.pl
Thanks in advance (1 Reply)
Hello,
Is it possible to make a file manager use different "colored folders" when browsing specific directories?
For example, if I open a gnome file manager and browse my windows share at, smb://192.168.1.101/z/ , can I make those folders appear green?
And when I open another instance of... (0 Replies)
is there any other useful command to go into a specific directory and not go into its subdirectories that operates similar to find.? (it will return the full pathname?) or is there any way to make find not go into the subdirectories of the specified directory? This is on ksh as well. (3 Replies)
Hi
This is my third past and very impressed with previous post replies
Hoping the same for below query
How to find a existing file location and directory location in solaris box (1 Reply)
hi all,
i am new to UNIX environment.
i have a file and directory with same name, i don't know the location
I want to find location of that file and directory.
please suggest a solution. (5 Replies)
Discussion started by: mahesh1987
5 Replies
8. Post Here to Contact Site Administrators and Moderators
Hi guys...please any one help me ....
how to copy files from source to target location
if 5 files copied successfully out of 10 files then implement success=10
and if remaining 5 files not copied successfully then count error=5
how to implement this condition with in loop
i need code linux... (0 Replies)
Hi Folks ,
I have the different xml files at the following directory `/opt/app/rty/servers/tr/current/ops/config`
Let's say there are three files named
abc.xml
bv.xml
ert.xml
Now inside these xml there can be many tags as like shown below
<bean id="sdrt"... (6 Replies)
Discussion started by: unclesamm
6 Replies
LEARN ABOUT REDHAT
catch
catch(n) Tcl Built-In Commands catch(n)
__________________________________________________________________________________________________________________________________________________NAME
catch - Evaluate script and trap exceptional returns
SYNOPSIS
catch script ?varName?
_________________________________________________________________DESCRIPTION
The catch command may be used to prevent errors from aborting command interpretation. Catch calls the Tcl interpreter recursively to exe-
cute script, and always returns without raising an error, regardless of any errors that might occur while executing script.
If script raises an error, catch will return a non-zero integer value corresponding to one of the exceptional return codes (see tcl.h for
the definitions of code values). If the varName argument is given, then the variable it names is set to the error message from interpret-
ing script.
If script does not raise an error, catch will return 0 (TCL_OK) and set the variable to the value returned from script.
Note that catch catches all exceptions, including those generated by break and continue as well as errors. The only errors that are not
caught are syntax errors found when the script is compiled. This is because the catch command only catches errors during runtime. When
the catch statement is compiled, the script is compiled as well and any syntax errors will generate a Tcl error.
EXAMPLES
The catch command may be used in an if to branch based on the success of a script.
if { [catch {open $someFile w} fid] } {
puts stderr "Could not open $someFile for writing
$fid"
exit 1
}
The catch command will not catch compiled syntax errors. The first time proc foo is called, the body will be compiled and a Tcl error will
be generated.
proc foo {} {
catch {expr {1 +- }}
}
KEYWORDS
catch, error
Tcl 8.0 catch(n)