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Top Forums Shell Programming and Scripting Check two condition in while loop Post 302917132 by MadeInGermany on Sunday 14th of September 2014 01:03:34 PM
Old 09-14-2014
A break can make sense here
Code:
while [ $A -le $z ]
do
  read line < file # efficiently read the first line
  if [ "$line" = "Y" ]
  then
    /path/to/main_script
    break # break the loop
  fi
  sleep 120
  A=`expr $A + 1`
done

 

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

__________________________________________________________________________________________________________________________________________________

NAME
break - Abort looping command SYNOPSIS
break _________________________________________________________________ DESCRIPTION
This command is typically invoked inside the body of a looping command such as for or foreach or while. It returns a TCL_BREAK code, which causes a break exception to occur. The exception causes the current script to be aborted out to the innermost containing loop command, which then aborts its execution and returns normally. Break exceptions are also handled in a few other situations, such as the catch com- mand, Tk event bindings, and the outermost scripts of procedure bodies. EXAMPLE
Print a line for each of the integers from 0 to 5: for {set x 0} {$x<10} {incr x} { if {$x > 5} { break } puts "x is $x" } SEE ALSO
catch(3tcl), continue(3tcl), for(3tcl), foreach(3tcl), return(3tcl), while(3tcl) KEYWORDS
abort, break, loop Tcl break(3tcl)
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