update usage with all supported options.

This commit is contained in:
Renaud 2013-06-07 14:00:56 +08:00
parent 102618586f
commit 006f89258e
1 changed files with 14 additions and 7 deletions

21
main.c
View File

@ -105,13 +105,20 @@ static void version( void) {
static void usage( void) {
fputs( "Usage: " PROGRAM_NAME " filename\n"
" or: " PROGRAM_NAME " [options]\n\n"
" + start at the end of file\n"
" +<n> start at line <n>\n"
" -g[G]<n> go to line <n>\n"
" --help display this help and exit\n"
" --version output version information and exit\n", stdout) ;
fputs( "Usage: " PROGRAM_NAME " [OPTION].. [FILE]..\n\n"
" + start at the end of file\n"
" +<n> start at line <n>\n"
" --help display this help and exit\n"
" --version output version information and exit\n"
" -a|A process error file\n"
" -e|E edit file\n"
" -g|G<n> go to line <n>\n"
" -k|K<key> use code key\n"
" -n|N accept null chars\n"
" -r|R restrictive use\n"
" -s|S<string> search string\n"
" -v|V view file\n"
, stdout) ;
}