On 2020-04-17 Bill Cole wrote: > On 17 Apr 2020, at 0:57, Ranjan Maitra wrote: > > On Mon, 23 Mar 2020 17:19:42 -0400 (EDT) Wietse Venema wrote: > > > #!/bin/sh > > > > > > while : > > > do > > > ifconfig xxx | egrep 'UP|DOWN' > > > sleep 2 > > > done | while read status > > > do > > > case "$status" in > > > *UP*) if [ "$prev" -ne up ] > > > then > > > prev=up > > > postconf -X defer_transports > > > postfix reload > > > fi;; > > > *) if [ "$prev" -ne down ] > > > then > > > prev=down > > > postconf defer_transports=smtp > > > postfix reload > > > fi;; > > > esac > > > done > > > > Sorry to bring this up after a while, but I have been trying this code, > > but seem to hit a syntax error: > > > > line 10: [: : integer expression expected > > > > > > Line10: is the following line: > > > > *UP*) if [ "$prev" -ne up ] > > > > Any help? > > Make that line: > > *UP*) if [ "$prev" = up ] > > Also replace '-ne' in line 16 with '='
If I'm not mistaken, the '-ne' in both lines (10 & 16) should be '!='. Regards Ansgar Wiechers -- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky
