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CLEANUP: halog: make the default usage message fit in small screens 

The usage message was starting to have long lines, it's preferable that
it still fits well into a default 80-col display so that options are
easy to find. Also cut that into the 3 parts (input filter, modifier,
output format) for improved legibility.
This commit is contained in:
Willy Tarreau 2021-11-08 08:37:40 +01:00
parent 16cc16dd82
commit 87e7eafde4
1 changed files with 10 additions and 9 deletions
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19
admin/halog/halog.c
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@ -147,13 +147,14 @@ void usage(FILE *output, const char *msg)
{
fprintf(output,
"%s"
"Usage: halog [-h|--help] for long help\n"
" halog [-q] [-c] [-m <lines>]\n"
" {-cc|-gt|-pct|-st|-tc|-srv|-u|-uc|-ue|-ua|-ut|-uao|-uto|-uba|-ubt|-ic\n"
" |-hdr <block>:<field>\n"
" }\n"
" [-s <skip>] [-e|-E] [-H] [-rt|-RT <time>] [-ad <delay>] [-ac <count>] [-query]\n"
" [-v] [-Q|-QS] [-tcn|-TCN <termcode>] [ -hs|-HS [min][:[max]] ] [ -time [min][:[max]] <log\n"
"Usage:\n"
" halog [-h|--help] for long help\n"
" halog [input_filters]* [modifiers]* [output_format] < log\n"
" inp = [-e|-E] [-H] [-Q|-QS] [-rt|-RT <time>] [-ad <delay>] [-ac <count>]\n"
" [-hs|-HS [min][:[max]]] [-tcn|-TCN <termcode>] [-time [min][:[max]]]\n"
" mod = [-q] [-v] [-m <lines>] [-s <skipflds>] [-query]\n"
" out = {-c|-u|-uc|-ue|-ua|-ut|-uao|-uto|-uba|-ubt|-hdr <block>:<field>|\n"
" -cc|-gt|-pct|-st|-tc|-srv|-ic}\n"
"\n",
msg ? msg : ""
);
@ -169,7 +170,7 @@ void help()
{
usage(stdout, NULL);
printf(
"Input filters (several filters may be combined) :\n"
"Input filters - several filters may be combined\n"
" -H only match lines containing HTTP logs (ignore TCP)\n"
" -E only match lines without any error (no 5xx status)\n"
" -e only match lines with errors (status 5xx or negative)\n"
@ -189,7 +190,7 @@ void help()
" you can also use -n to start from earlier then field %d\n"
" -query preserve the query string for per-URL (-u*) statistics\n"
"\n"
"Output filters - only one may be used at a time\n"
"Output format - only one may be used at a time\n"
" -c only report the number of lines that would have been printed\n"
" -pct output connect and response times percentiles\n"
" -st output number of requests per HTTP status code\n"