There are numerious errors in your code. The error you showed us relates to the fact that you are not putting a space in front of all the ']''s associated with if statements.
Furthermore, your logic is wrong. Check out the following
Note that this can be simplified even further to
and if we really wanted too, we could eliminate a couple of more lines of code.
Is it possible in VI to do a global change but take the search patterns and the replacement patterns from an external file ?
I have cases where I can have 100,200 or 300+ global changes to do. All the new records are inside a file and I must VI a work file to change all of them.
Also, can... (1 Reply)
When i run sh -x test.sh, expr outputs x=expr $x + 1 instead of doing the arithmetic.. been working on this overnight.. and its being a pain in the arse if you ask me.. :confused::confused:
#!/bin/sh
#script for downloading numerical filenames
chap=1
p=1
count=0
x=1
while
do
if ... (2 Replies)
Basically, I have a huge amount of files (ripped audiobooks) that all have the same garbage in their filenames. I'm wondering how to go about writing a bash script to mass rename them. Example filenames as they stand now:
The First CD - 1x01 - Title 1.mp3
The First CD - 1x02 - Title 2.mp3... (4 Replies)
I'm trying to take a list of domains, find out the MX resolve it to IP then find out what the NS is and output the contents to a new file.
The only problem i'm having is when checking the Ip or host of the MX i can only get it to print the column with the MX record and the results of the host... (1 Reply)
Operating System: Solaris 10, Shell
We are outputting the results of our scripts to the stderr file. However we have encountered a problem where some of the lines in the file are truncated.
Is there a way to increase the terminal or column size within the script so that this does not... (4 Replies)
Hello,
I am new to shell scripting and I need your help.
I have found similar scripts in the forum but I need further assistance.
I am building a script to use hourly in cron to mailx me if the number of files in a path is less than e.g 100
I have started with the following:
#!/bin/sh... (2 Replies)
I have directory /test/logs which has multiple logs:
audit.log
audit.log.1
audit.log.2
audit.log.3
audit.log.4
audit.log.5
audit.log is current log file and audit.log.X are archive log files. I need to search within these log files and count word "error-5" logged within last 6 months... (4 Replies)
Good Morning,
Every so often, I have copy scripts that to don't complete, but I don't immediately know why. It usually ends up being a permissions issue or a length issue.
The scripts edit a log file, so I'd like to include any copy errors/issues in that file to check if the copies... (4 Replies)
Hi, I have collection of letters in a column such as:
AA5678
AA9873434
..
..
I am trying to find the number of charecters in each.
"echo "AA5678"|wc -c
7----------------> why does it give 7 instead of 6? (6 Replies)
Discussion started by: kvosu
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)