er-field separator in the Bourne, and Korn shells as well as bash) to parse each line of /etc/passwd and extra... a "colon" tells the shell to treat that character as the separater between "words" -- instead of the usual "whitespace" that's assigned to it. For this particular function it's ve... t to yes: lines are read using the null character as terminator, else they are read using the standard newline as terminator.
This function may block waiting for ... ng-is-name string Function
Return true if the associated char function returns true for each character in string. As an additional constraint: mbfl-string-is-name ret
cho "(string comparison)"
# "4" != "5"
# ASCII 52 != ASCII 53
fi
# In this particular instance, both "-n... alue.
# This state is called "null" (not the same as zero!).
if [ -n $string1 ] # string1 has not ... # Wrong result.
# Shows $string1 as not null, although it was not initialized.
echo
... ood practice to quote it (if [ "$string1" ]).
#
# As Stephane Chazelas points out,
# if [ $string1
