Test if execution was successful

6 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Confirm the execution of copy command is successful or not

All, I have to copy huge file from one location to another using python . I want to make sure the execution of Copy command is successful and all the files are copied properly (there has not been any abrupt interruption to the copy process or error like no space available is encountered during...

2. High Performance Computing

IBM Hardware: Test speed of an execution core reliably.

Hey Folks, Doing simple floating point or integer arithmetic is limited since if another execution core is not busy, the system will (presumably?) assign CPU resources to where they are needed so I could be getting the performance of 2 or more cores theoretically? Any good reliable way to...

3. Shell Programming and Scripting

Prefixing test case methods with letter 'test'

Hi, I have a Python unit test cases source code file which contains more than a hundred test case methods. In that, some of the test case methods already have prefix 'test' where as some of them do not have. Now, I need to add the string 'test' (case-sensitive) as a prefix to those of the...

4. Shell Programming and Scripting

How to check weather a string is like test* or test* ot test in if condition

How to check weather a string is like test* or test* ot *test* in if condition

5. Shell Programming and Scripting

Test on string containing spacewhile test 1 -eq 1 do read a $a if test $a = quitC then break fi d

This is the code: while test 1 -eq 1 do read a $a if test $a = stop then break fi done I read a command on every loop an execute it. I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test. For example echo hello. Now the...

6. Shell Programming and Scripting

Expect Issue Serial Forground Execution vs Concurrent Background Execution

I have an expect script that interrogates several hundred unix servers for both access and directories therein using "ssh user@host ls -l /path". The combination of host/path are unique but the host may be interrogated multiple times if there are multiple paths to test. The expect script is run...

LEARN ABOUT DEBIAN

while

while(3tcl)						       Tcl Built-In Commands						       while(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       while - Execute script repeatedly as long as a condition is met

SYNOPSIS

       while test body
_________________________________________________________________

DESCRIPTION

       The  while  command evaluates test as an expression (in the same way that expr evaluates its argument).	The value of the expression must a
       proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter.	Once body has been  executed  then
       test  is  evaluated again, and the process repeats until eventually test evaluates to a false boolean value.  Continue commands may be exe-
       cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate  termi-
       nation of the while command.  The while command always returns an empty string.

       Note: test should almost always be enclosed in braces.  If not, variable substitutions will be made before the while command starts execut-
       ing, which means that variable changes made by the loop body will not be considered in the expression.  This is	likely	to  result  in	an
       infinite loop.  If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
       ation), so changes in the variables will be visible.  For an example, try the following script with and without the braces around $x<10:
	      set x 0
	      while {$x<10} {
		  puts "x is $x"
		  incr x
	      }

EXAMPLE

       Read lines from a channel until we get to the end of the stream, and print them out with a line-number prepended:
	      set lineCount 0
	      while {[gets $chan line] >= 0} {
		  puts "[incr lineCount]: $line"
	      }

SEE ALSO

       break(3tcl), continue(3tcl), for(3tcl), foreach(3tcl)

KEYWORDS

       boolean value, loop, test, while

Tcl																       while(3tcl)

UNIX for Dummies Questions & Answers