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Check the # of arguments, instead of silently dumping core.

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This commit is contained in:
Joerg Wunsch 1995-12-10 15:33:00 +00:00
parent 279884182f
commit 54e66fcad5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=12729
1 changed files with 2 additions and 0 deletions
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usr.bin/nice/nice.c
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@ -64,6 +64,8 @@ main(argc, argv)
{ {
int niceness = DEFNICE; int niceness = DEFNICE;
if (argc < 2)
errx(1, "usage: nice [-number] command [arguments]");
if (argv[1][0] == '-') if (argv[1][0] == '-')
if (argv[1][1] == '-' || isdigit(argv[1][1])) { if (argv[1][1] == '-' || isdigit(argv[1][1])) {
niceness = atoi(argv[1] + 1); niceness = atoi(argv[1] + 1);