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string_operations

25 Treffer, Zuletzt geändert: vor 17 Jahren

s. The output of this command, which is 1 for non-letters and null for OK, is held in the variable _LETTERS_ONLY. A test on the variable is then carried ... { echo " $@ contains errors, it must contain only letters" } The function name_error will be used to e... { # assign the argurment across to new variable _LETTERS_ONLY=$1 _LETTERS_ONLY=`echo $1|awk '{if($0~/[^a-zA-Z]/) print "1"}'` if [ "$_LETTERS_ONLY" != ""

test

1 Treffer, Zuletzt geändert: vor 16 Jahren

t null, although it was not initialized. echo # Let's try it again. if [ -n "$string1" ] # This tim