WebAccording to man getopts, OPTIND is the index of the next argument to be processed (starting index is 1). Hence, In sh foo.sh -abc CCC Blank arg1 is -abc, so after a we are still parsing arg1 when next is b ( a 1 ). Same is true when next is c, we are still in arg1 ( b 1 ). When we are at c, since c needs an argument ( CCC) the OPTIND is 3 ... WebJan 24, 2024 · (63) optind: 4 opterr: 1 optopt: c (99) optarg: (null) getopt returned: ' ' (-1) optind: 4 opterr: 1 optopt: c (99) optarg: (null) If optstring begins with -, non-option positional arguments can also be handled. In these cases getopt() will return the value 1 to indicate it has found a positional argument and set the optarg pointer to it.
How does the OPTIND variable work in the shell builtin getopts
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WebJun 15, 2024 · 扫描过程中,optind是下一个选项的索引, 非选项参数将跳过,同时optind增1。optind初始值为1。当扫描argv[1]时,为非选项参数,跳过,optind=2;扫描到-a选项时, 下一个将要扫描的选项是-b,则optind更改为3;扫描到-b选项时,后面有参数(会认为-c为选项b的参数),optind=5,扫描到code非选项跳过optind=6 ... WebIn fact, to simplify this task, you can do a `make opt.c' in the `src/' directory and a single file, called `opt.c' of course, will be generated. (It is possible that the opt distribution will … WebJul 5, 2015 · shift $ ( (OPTIND-1)) (note OPTIND is upper case) is normally found immediately after a getopts while loop. $OPTIND is the number of options found by … impurity\\u0027s ne