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| author | David E. O'Brien <obrien@FreeBSD.org> | 1999-07-29 09:47:33 +0000 |
|---|---|---|
| committer | David E. O'Brien <obrien@FreeBSD.org> | 1999-07-29 09:47:33 +0000 |
| commit | 6db03527ff55ce30ecfdb111ddecd5ccb92664e3 (patch) | |
| tree | e340534cefebc3092d71bf73d626dc4976f433f7 /usr.bin/yacc/yyfix.sh | |
| parent | e7bd01e5df8a3e8b4c1159aff8d4842b82dfc606 (diff) | |
| download | src-6db03527ff55ce30ecfdb111ddecd5ccb92664e3.tar.gz src-6db03527ff55ce30ecfdb111ddecd5ccb92664e3.zip | |
Check that user supplied the required argument; and if not, show usage().
Obtained from: OpenBSD
Notes
Notes:
svn path=/head/; revision=49212
Diffstat (limited to 'usr.bin/yacc/yyfix.sh')
| -rw-r--r-- | usr.bin/yacc/yyfix.sh | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/usr.bin/yacc/yyfix.sh b/usr.bin/yacc/yyfix.sh index 29085f9861f3..d983df678e7f 100644 --- a/usr.bin/yacc/yyfix.sh +++ b/usr.bin/yacc/yyfix.sh @@ -37,6 +37,11 @@ OLDYACC="yyexca yyact yypact yypgo yyr1 yyr2 yychk yydef" NEWYACC="yylhs yylen yydefred yydgoto yysindex yyrindex yygindex \ yytable yycheck" +if [ $# -eq 0 ]; then + echo "usage: $0 file [tables]" >&2 + exit 1 +fi + file=$1 >$file shift |