I have problems executing a script in ksh with this script named
process.sh:
The problem is that when I execute the script, sometimes it shows the
message "The script is running", when I think it's impossible.
The reason that I write "wc -l|read a" is that
the count returns 1 because the "ps" is executed in the same script.
My idea is that nobody execute 2 times the same script, only on time.
The SETI@home project invites volunteers to install special software of their home computers. This software, called BOINC, runs computational jobs when the computer would otherwise be idle. And the software needs to contact the main server periodically to deliver results and obtain new problems.... (2 Replies)
My goal is to make a script to find/replace the variable "PORT" with a unique number.
Like the following
<VirtualHost 174.120.36.236:PORT>
ServerName architect.com.ph
ServerAlias www.architect.com.ph
DocumentRoot /home/architec/public_html
ServerAdmin... (16 Replies)
If I run:
find /somefolder -type f -size -7M | wc -l
I get 73594 files
But when I run
find /somefolder -type f -size -7M -exec /bin/cp -v {} /someotherfolder/ \;
it only copies 38891 of the files to the folder, why? There's a mix of all types of files in /somefolder. Is there some other... (12 Replies)
I must go through some files to change a certain string within text files to another string. I use openSUSE and folders are mounted by cifs.
Text to be replaced (only in .m extension) is U:\FOLDER and new string is N:
That works fine with spaces in directory names etc., but this process ... (5 Replies)
I want to search a file if it contains special strings and if yes, the records found should be mailed.
I can either do it with a temporary file:
/usr/bin/grep somestring somefile > /tmp/tempfile && /usr/bin/mail -s "Found something" email@mycomp.com < /tmp/tempfile... or by running the grep... (10 Replies)
My script triggers and e-mail if keywords supplied to it were found.
Problem is if it find the same keyword continously (due to continous server errors), it triggers mails and fillup my mail box with same message (which is not required)
I want my script to NOT to send an e-mail if it finds the... (13 Replies)
Hi,
How would you write bash script that given a directory as an argument and finds all duplicate files (with same contents - by using bytewise comparison) there and prints their names? (6 Replies)
The contents of my home directory:
bin Desktop Documents Downloads folders Music Pictures Public Templates Videos
When I run the command for file in /home/myself/*d*; do if ; then echo $file; fi; doneit finds
/home/myself/Downloads
/home/myself/Videos
but not "folders".
... (5 Replies)
Discussion started by: Xubuntu56
5 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)