Quick if file exist question...


 
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# 1  
Old 11-30-2008
Quick if file exist question...

What does the "!" do in the second statement? Is kinda strange but sometimes one or the other works.

rsakey="~/.ssh/id_rsa.pub"

if [ -f $rsakey ];then
if [! -f $rsakey ];then
# 2  
Old 11-30-2008
Quote:
Originally Posted by elbombillo
What does the "!" do in the second statement? Is kinda strange but sometimes one or the other works.

rsakey="~/.ssh/id_rsa.pub"

if [ -f $rsakey ];then
if [! -f $rsakey ];then
-f checks for file existence. The ! represents the NOT operator. Therefore you can read 'if [ ! -f $rsakey ] ; then' as 'if rsakey does not exist'
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