I am writing a shell script.
Now i need to read in a string and send it to an awk file to compare and search for compatible record.
I wrote it like tat:
read serial | awk -f generate.awk data.dat
p/s: the data file got 6 field.
According to an expert, we can write it like tat:
read... (1 Reply)
Dear All,
I have one script which accepts database name and user_id from the user, i have another script that will unload the data from all the tables based on the user_id accepted by the user. How can i pass the user_id from the 1st script to the other. My OS is sun solaris. Thanks in... (3 Replies)
Hi all,
I'm new to Shell scripting. In my shell script for Bourne shell, the script accepts a date parameter which is optional. If the value is supplied, the supplied value should be assigned to a variable. If not, the current date will be assigned to the variable. My script is like this.
#!... (9 Replies)
Hi All,
I have a question regarding running this script by passing an argument, for example ./ShellParse.sh sun, how do i do that? So i want when i pass argument sun, it shouild execute things inside the for loop. I want to support some other platforms too, so there are more for loops to... (3 Replies)
Dear All,
Plz, can someone clarify me regarding the below.
Actually I want to write the script that will get the some parameter like "yes" or "No" as we wish during execution without prompting for entering that word. Plz tell me...
Its Urgent..
Thanks & Regards
... (1 Reply)
Hi Gurus,
I have written a script set_env.ksh to which I pass an argument and set the oracle login credentials based on the argument I pass.
The script has code as below.
ORACLE_SID=$1
DB_SCHEMA_LOGON=$DB_SCHEMA_USER/$DB_SCHEMA_PASSWORD@$ORACLE_SID; export DB_SCHEMA_LOGON;
echo... (3 Replies)
I have one working awk command line. Which taking data from the “J1202523.TXT” file and generating the “brazil.dat” file. PFB code.
awk '{ DUNS = substr($0,0,9);if ( substr($0,14,3) == "089" ) print DUNS }' J1202523.TXT > Brazil.dat
But now I want to pass two parameter as a command line argument... (4 Replies)
I have the awk script below and things go wrong when I do
awk -v dsrmx=25 -f ./checkSRDry.awk --usage
I basically want to override the usual --usage and --help that awk gives.
How do people usually handle this situation when you also want to supply your own usage and help
concerning the... (2 Replies)
Hi All,
I want to pass array of argument from Java to a shell script.I can use process builder api and its exec() method to call the script,but the question is how to receive the parameter in the script.
Thanks in advance
---------- Post updated at 10:00 PM ---------- Previous update was... (1 Reply)
Hi,
I am trying to pass a variable as an argument to another script. While substitution of variable, I am facing a problem.
varaiable "a" value should be -b "FPT MAIN".
When we pass "a" to another script, we are expecing it to get substitue as ./test.sh -b "FPT MAIN". But, it is getting... (9 Replies)
Discussion started by: Manasa Pradeep
9 Replies
LEARN ABOUT MOJAVE
catch
catch(n) Tcl Built-In Commands catch(n)
__________________________________________________________________________________________________________________________________________________NAME
catch - Evaluate script and trap exceptional returns
SYNOPSIS
catch script ?resultVarName? ?optionsVarName?
_________________________________________________________________DESCRIPTION
The catch command may be used to prevent errors from aborting command interpretation. The catch command calls the Tcl interpreter recur-
sively to execute 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 the exceptional return code returned by evaluation
of script. Tcl defines the normal return code from script evaluation to be zero (0), or TCL_OK. Tcl also defines four exceptional return
codes: 1 (TCL_ERROR), 2 (TCL_RETURN), 3 (TCL_BREAK), and 4 (TCL_CONTINUE). Errors during evaluation of a script are indicated by a return
code of TCL_ERROR. The other exceptional return codes are returned by the return, break, and continue commands and in other special situa-
tions as documented. Tcl packages can define new commands that return other integer values as return codes as well, and scripts that make
use of the return -code command can also have return codes other than the five defined by Tcl.
If the resultVarName argument is given, then the variable it names is set to the result of the script evaluation. When the return code
from the script is 1 (TCL_ERROR), the value stored in resultVarName is an error message. When the return code from the script is 0
(TCL_OK), the value stored in resultVarName is the value returned from script.
If the optionsVarName argument is given, then the variable it names is set to a dictionary of return options returned by evaluation of |
script. Tcl specifies two entries that are always defined in the dictionary: -code and -level. When the return code from evaluation of |
script is not TCL_RETURN, the value of the -level entry will be 0, and the value of the -code entry will be the same as the return code. |
Only when the return code is TCL_RETURN will the values of the -level and -code entries be something else, as further described in the doc- |
umentation for the return command. |
When the return code from evaluation of script is TCL_ERROR, three additional entries are defined in the dictionary of return options |
stored in optionsVarName: -errorinfo, -errorcode, and -errorline. The value of the -errorinfo entry is a formatted stack trace containing |
more information about the context in which the error happened. The formatted stack trace is meant to be read by a person. The value of |
the -errorcode entry is additional information about the error stored as a list. The -errorcode value is meant to be further processed by |
programs, and may not be particularly readable by people. The value of the -errorline entry is an integer indicating which line of script |
was being evaluated when the error occurred. The values of the -errorinfo and -errorcode entries of the most recent error are also avail- |
able as values of the global variables ::errorInfo and ::errorCode respectively. |
Tcl packages may provide commands that set other entries in the dictionary of return options, and the return command may be used by scripts |
to set return options in addition to those defined above.
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
}
There are more complex examples of catch usage in the documentation for the return command.
SEE ALSO
break(n), continue(n), dict(n), error(n), return(n), tclvars(n)
KEYWORDS
catch, error
Tcl 8.5 catch(n)