Answer by wolf for Calculate variable, and output it to another variable
Absolutely right and complete the suggested solutions, just to mention the way it has to be done in former times when only the Bourne-Shell was available, that's the way it likes it: rownum=`expr...
View ArticleAnswer by Hola Soy Edu Feliz Navidad for Calculate variable, and output it to...
I would use (as was mentioned before) rownum=$((nextnum+1)) or ((rownum=nextnum+1)) but if you prefer an standard command you can use the let command, like let rownum=$nextnum+1
View ArticleAnswer by Julian for Calculate variable, and output it to another variable
You can also use built in arithmetic in bash: rownum=$((nextnum+1)) which would be slightly faster.
View ArticleAnswer by manatwork for Calculate variable, and output it to another variable
The substring inside the ` ` must be a valid command itself: rownum=`echo $nextnum+1 | bc` But is preferable to use $( ) instead of ` `: rownum=$(echo $nextnum+1 | bc) But there is no need for bc, the...
View ArticleCalculate variable, and output it to another variable
The only calculator I know is bc. I want to add 1 to a variable, and output to another variable. I got the nextnum variable from counting string in a file: nextnum=`grep -o stringtocount file.tpl.php...
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