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Top Forums Shell Programming and Scripting how to see if the file is empty or not? Post 302226879 by yongitz on Wednesday 20th of August 2008 04:54:22 AM
Old 08-20-2008
Hi! Check the man page for test. You can use something like this in your test command.
Code:
 [ ! -s $file ]

 

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ns_lctl(3aolserver)					    AOLserver Built-In Commands 				       ns_lctl(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME
ns_for, ns_foreach, ns_while, ns_lctl - Replacements for standard Tcl loop commands which enable monitoring and control SYNOPSIS
ns_for start test next body ns_foreach varname list body ns_foreach varlist1 list1 ?varlist2 list2 ...? body ns_while test body ns_lctl cancel id ns_lctl eval id script ns_lctl info id ns_lctl install command ns_lctl list ns_lctl pause id ns_lctl result id _________________________________________________________________ DESCRIPTION
The ns_for, ns_foreach, and ns_while commands are replacements for cooresponding Tcl commands with the additional capability of monitoring and control through the ns_lctl command. ns_for start test next body See the for(n) man page for usage. ns_foreach start test next body See the foreach(n) man page for usage. ns_foreach varlist1 list1 ?varlist2 list2 ...? body See the foreach(n) man page for usage. ns_while test body See the while(n) man page for usage. ns_lctl cancel id Mark the given loop to cancel at the next iteration, resulting in the loop returning with TCL_ERROR. ns_lctl eval id script ns_lctl info id ns_lctl install command ns_lctl list ns_lctl pause id ns_lctl result id SEE ALSO
for(n), foreach(n), while(n) KEYWORDS
threads, iteration, list, looping, cancel AOLserver 4.5 ns_lctl(3aolserver)
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