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Shell Programming and Scripting
Silly newbie question on special characters!
Post 302129813 by earnstaf on Wednesday 1st of August 2007 06:52:53 PM
08-01-2007
Quote:
Hello again Gurus,
Can someone please direct me to an online source that specifically explains what characters like [ ! # {} ] mean within if statements? or scripts in general, I have found information about the different letter options you can specify for an if statment, but I get really confused with the ! in front of a -f or particularly this if [ $# -lt 1 ] at the beginning of a script when there have been no variables set.
I've learned the basic purpose of an if statement and case statement sort of, but the special characters are somehow omitted from the sources I've been looking at.
Any source for dummies or idiots like myself would be great!
Thanks so much.
Charlie.
Can someone please direct me to an online source that specifically explains what characters like [ ! # {} ] mean within if statements? or scripts in general, I have found information about the different letter options you can specify for an if statment, but I get really confused with the ! in front of a -f or particularly this if [ $# -lt 1 ] at the beginning of a script when there have been no variables set.
I've learned the basic purpose of an if statement and case statement sort of, but the special characters are somehow omitted from the sources I've been looking at.
Any source for dummies or idiots like myself would be great!
Thanks so much.
Charlie.
http://www.tldp.org/LDP/abs/html/special-chars.html
As for:
Code:
if [ $# -lt 1 ]
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