diff options
Diffstat (limited to 'c/head.c')
| -rw-r--r-- | c/head.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/c/head.c b/c/head.c deleted file mode 100644 index 3298e54..0000000 --- a/c/head.c +++ /dev/null @@ -1,28 +0,0 @@ -#include "gbos.h" -/* head [-n N] [N] [file]: first N lines of a file or stdin (default 10). */ -void main(void) { - char *argv[8]; - unsigned char argc = argv_parse(argv, 8); - char *nv = optval(argv, argc, 'n'); - unsigned char n = 10, lines = 0, i, fd = NOFD; - char *fname = 0; - int ch; - if (nv) n = atou(nv); - for (i = 0; i < argc; i++) { - if (argv[i][0] == '-') continue; - if (nv == argv[i]) continue; - if (!nv && argv[i][0] >= '0' && argv[i][0] <= '9') { n = atou(argv[i]); continue; } - fname = argv[i]; break; - } - if (fname) { - fd = open(fname, O_READ); - if (fd > 3) { puts("head: no such file"); nl(); return; } - } - for (;;) { - if (fd > 3) { char c = readc(); if (c == EOF) break; ch = c; } - else { ch = fgetc(fd); if (ch < 0) break; } - if (lines < n) putc((char)ch); - if (ch == '\n') lines++; - } - if (fd != NOFD) close(fd); -} |
