I have a shell script that does NOT have the '#!' line at the top. It is written for ksh. The shell in my passwd entry is '/usr/bin/ksh' and my SHELL env variable is '/usr/bin/ksh'. Now, here's the issue. I invoke the script on Solaris with './myprog'. This works fine. I also run the same... (3 Replies)
hi,
i am one day old in shell scritpting. how to invoke one shell script from the other?
For eg.i have two shell scripts A.sh and B.sh. Inside A.sh i need to invoke B.sh and the return code of A.sh should be the value returned by B.sh.
it would be better if you provide any sample shell... (3 Replies)
I want to invoke shell script named bubesh.sh when submit button clicked on html/jsp page.I am using an apache server and the html & shell script are in the same working directory.Please help. (2 Replies)
list me commands to invoke a shell script from php once the submit button is clicked in the php page. Requirement is Once a submit button is clicked it should run a script that displays the outcome of the script in a html/php. Please help.
Thanks in Advance,
BubeshJ (2 Replies)
Hi everybody,
I have a script in which I'm invoking another script which runs in a subshell.
after the script is executed I want to return to the parent shell as some variables are set. However i'm unable to return to my original shell as the script which i'm calling inside is invoked in... (5 Replies)
Hi,
I have an HTML form through which I get some text as input. i need to run a shell script say script.sh inside a perl-cgi script named main_cgi.sh on the form input.
I want to write the contents of the form in a file and then perform some command line operations like grep, cat on the text... (2 Replies)
Hi All,
I am using the following command to invoke the shell script from a perl command.
perl -i.bak -pe'BEGIN { $cmd = "/opt/coreservices/tomcat-5.5.9/bin/digest.sh -a sha"; }
s/(password=")(*)/
$1.`$cmd $2|cut -d: -f2|tr -d "\n"`
/e
' $CATALINA_HOME/conf/tomcat-users.xml
I need... (1 Reply)
Hello All,
I have a shell script A which is in one unix box. Also i have a script B in another unix box. Now i'm struggling to find a way to invoke A shell script from B shell script. Is it possible to do this in any way..Request you anybody please help me in this point.
Thanks in advance. (6 Replies)
whats wrong here?!
________________
#!/bin/sh
# FILE: clean_dirs
# GOAL : To clean up directories used in Oracle processing
# LANGUAGE : shell script (sh)
# PARAMETERS : Input_File
# 11/07/02 acri - modified to cd into the directory so it will... (7 Replies)
Hi All,
I have a scenario :
1. A list of servers naming server21, server 22, server 23 etc. This list of servers is separate for my environments.
Env1 has 3 server
Env2 has 5 serves
Env3 has 10 servers
2. Each server accesses application through which I want to invoke some method. So... (7 Replies)
Discussion started by: ankur328
7 Replies
LEARN ABOUT OPENSOLARIS
catch
catch(1T) Tcl Built-In Commands catch(1T)__________________________________________________________________________________________________________________________________________________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. 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 varName 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 varName 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 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 +- }}
}
SEE ALSO break(1T), continue(1T), error(1T), return(1T), tclvars(1T)KEYWORDS
catch, error
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl 8.0 catch(1T)