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candump: fix/unify help text indention 

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
pull/201/head
Oliver Hartkopp 2020-04-28 18:59:37 +02:00
parent e266422c54
commit 819a03f6e2
1 changed files with 10 additions and 10 deletions
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candump.c
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@ -140,22 +140,22 @@ void print_usage(char *prg)
fprintf(stderr, "Up to %d CAN interfaces with optional filter sets can be specified\n", MAXSOCK);
fprintf(stderr, "on the commandline in the form: <ifname>[,filter]*\n");
fprintf(stderr, "\nFilters:\n");
fprintf(stderr, " Comma separated filters can be specified for each given CAN interface:\n");
fprintf(stderr, "<can_id>:<can_mask>\n\t(matches when <received_can_id> & mask == can_id & mask)\n");
fprintf(stderr, "<can_id>~<can_mask>\n\t(matches when <received_can_id> & mask != can_id & mask)\n");
fprintf(stderr, "#<error_mask>\n\t(set error frame filter, see include/linux/can/error.h)\n");
fprintf(stderr, "[j|J]\n\t(join the given CAN filters - logical AND semantic)\n");
fprintf(stderr, " Comma separated filters can be specified for each given CAN interface:\n");
fprintf(stderr, " <can_id>:<can_mask>\n (matches when <received_can_id> & mask == can_id & mask)\n");
fprintf(stderr, " <can_id>~<can_mask>\n (matches when <received_can_id> & mask != can_id & mask)\n");
fprintf(stderr, " #<error_mask>\n (set error frame filter, see include/linux/can/error.h)\n");
fprintf(stderr, " [j|J]\n (join the given CAN filters - logical AND semantic)\n");
fprintf(stderr, "\nCAN IDs, masks and data content are given and expected in hexadecimal values.\n");
fprintf(stderr, "When the can_id is 8 digits long the CAN_EFF_FLAG is set for 29 bit EFF format.\n");
fprintf(stderr, "Without any given filter all data frames are received ('0:0' default filter).\n");
fprintf(stderr, "\nUse interface name '%s' to receive from all CAN interfaces.\n", ANYDEV);
fprintf(stderr, "\nExamples:\n");
fprintf(stderr, "%s -c -c -ta can0,123:7FF,400:700,#000000FF can2,400~7F0 can3 can8\n\n", prg);
fprintf(stderr, "%s -l any,0~0,#FFFFFFFF\n\t(log only error frames but no(!) data frames)\n", prg);
fprintf(stderr, "%s -l any,0:0,#FFFFFFFF\n\t(log error frames and also all data frames)\n", prg);
fprintf(stderr, "%s vcan2,12345678:DFFFFFFF\n\t(match only for extended CAN ID 12345678)\n", prg);
fprintf(stderr, "%s vcan2,123:7FF\n\t(matches CAN ID 123 - including EFF and RTR frames)\n", prg);
fprintf(stderr, "%s vcan2,123:C00007FF\n\t(matches CAN ID 123 - only SFF and non-RTR frames)\n", prg);
fprintf(stderr, "%s -l any,0~0,#FFFFFFFF\n (log only error frames but no(!) data frames)\n", prg);
fprintf(stderr, "%s -l any,0:0,#FFFFFFFF\n (log error frames and also all data frames)\n", prg);
fprintf(stderr, "%s vcan2,12345678:DFFFFFFF\n (match only for extended CAN ID 12345678)\n", prg);
fprintf(stderr, "%s vcan2,123:7FF\n (matches CAN ID 123 - including EFF and RTR frames)\n", prg);
fprintf(stderr, "%s vcan2,123:C00007FF\n (matches CAN ID 123 - only SFF and non-RTR frames)\n", prg);
fprintf(stderr, "\n");
}