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/* cat.c - command to show the contents of a file */
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2005 Free Software Foundation, Inc.
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* GRUB is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with GRUB; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <grub/normal.h>
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#include <grub/file.h>
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#include <grub/disk.h>
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#include <grub/term.h>
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#include <grub/misc.h>
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#include <grub/gzio.h>
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grub_cmd_cat (struct grub_arg_list *state __attribute__ ((unused)),
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int argc, char **args)
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char buf[GRUB_DISK_SECTOR_SIZE];
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "file name required");
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file = grub_gzfile_open (args[0], 1);
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while ((size = grub_file_read (file, buf, sizeof (buf))) > 0)
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for (i = 0; i < size; i++)
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unsigned char c = buf[i];
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if (grub_isprint (c) || grub_isspace (c))
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grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
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grub_printf ("<%x>", (int) c);
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grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
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grub_file_close (file);
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(void) mod; /* To stop warning. */
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grub_register_command ("cat", grub_cmd_cat, GRUB_COMMAND_FLAG_BOTH,
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"cat FILE", "Show the contents of a file.", 0);
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grub_unregister_command ("cat");