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string_operations

148 Treffer, Zuletzt geändert: vor 17 Jahren

tional parameters, starting at $position. <code> echo ${*:2} # Echoes second and following positional parameters. echo ${@:2} # Same as above. echo ${*:2:3} # Echoes three positional parameters, starting at second... 123456789...... # 1-based indexing. echo `expr substr $stringZ 1 2` # ab echo `expr substr $stringZ 4 3` # ABC ===== D

test

31 Treffer, Zuletzt geändert: vor 16 Jahren

variable. if [ -z "$String" ] then echo "\$String is null." else echo "\$String is NOT null." fi # $String is null. </code> -... integer characters. # Caution advised, however. echo if [ "$a" -ne "$b" ] then echo "$a is not equal to $b" echo "(arithmetic comparison)" fi echo if