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string_operations

233 Treffer, Zuletzt geändert: vor 17 Jahren

g expr "$string" : '.*' </code> stringZ=abcABC123ABCabc <code> echo ${#stringZ} # 15 ech... g' $substring is a regular expression. stringZ=abcABC123ABCabc # |------| echo `expr match "$stringZ" 'a... acter in $substring that matches. <code> stringZ=abcABC123ABCabc echo `expr index "$stringZ" C12` # 6... ing from $string at $position. <code> stringZ=abcABC123ABCabc # 0123456789..... # 0-based indexing

test

8 Treffer, Zuletzt geändert: vor 16 Jahren

h Shell Tests ====== Quelle((http://tldp.org/LDP/abs/html/comparison-ops.html)) ===== Other Compariso... ]] construct. ---- < is less than, in ASCII alphabetical order <code> if [[ "$a" < "$b" ]] i... construct. ---- > is greater than, in ASCII alphabetical order <code> if [[ "$a" > "$b" ]] ... de> String='' # Zero-length ("null") string variable. if [ -z "$String" ] then echo "