Remove -u short form, use only --utc (code review)

man/man8/exitsnoop.8

@@ -2,7 +2,7 @@
 .SH NAME
 exitsnoop \- Trace all process termination (exit, fatal signal). Uses Linux eBPF/bcc.
 .SH SYNOPSIS
-.B exitsnoop [\-h] [\-t] [\-u] [\-x] [\-p PID] [\-\-label LABEL]
+.B exitsnoop [\-h] [\-t] [\-\-utc] [\-x] [\-p PID] [\-\-label LABEL]
 .SH DESCRIPTION
 exitsnoop traces process termination, showing the command name and reason for
 termination, either an exit or a fatal signal.
@@ -24,7 +24,7 @@ Print usage message.
 \-t
 Include a timestamp column.
 .TP
-\-u
+\-\-utc
 Include a timestamp column, use UTC timezone.
 .TP
 \-x
@@ -60,7 +60,7 @@ Label each output line with 'EXIT':
 .TP
 TIME-TZ
 Time of process termination HH:MM:SS.sss with milliseconds, where TZ is
-the local time zone, 'UTC' with \-u option.
+the local time zone, 'UTC' with \-\-utc option.
 .TP
 LABEL
 The optional label if \-\-label option is used. This is useful with the

tools/exitsnoop.py

@@ -24,7 +24,7 @@
  exitsnoop # trace all process termination
  exitsnoop -x # trace only fails, exclude exit(0)
  exitsnoop -t # include timestamps (local time)
- exitsnoop -u  # include timestamps (UTC)
+ exitsnoop --utc # include timestamps (UTC)
  exitsnoop -p 181 # only trace PID 181
  exitsnoop --label=exit # label each output line with 'exit'
 """
@@ -58,7 +58,7 @@ def _getParser():
  epilog=_examples)
  a=parser.add_argument
  a("-t", "--timestamp", action="store_true", help="include timestamp (local time default)")
- a("-u", "--utc", action="store_true", help="include timestamp in UTC (-t implied)")
+ a("--utc",  action="store_true", help="include timestamp in UTC (-t implied)")
  a("-p", "--pid", help="trace this PID only")
  a("--label", help="label each line")
  a("-x", "--failed", action="store_true", help="trace only fails, exclude exit(0)")

tools/exitsnoop_example.txt

@@ -37,7 +37,7 @@ of the process with hundredth of a second resolution, and the reason for
 the process exit (EXIT_CODE).
 
 A -t option can be used to include a timestamp column, it shows local time
-by default. The -u option shows the time in UTC. The --label
+by default. The --utc option shows the time in UTC. The --label
 option adds a column indicating the tool that generated the output,
 'exit' by default. If other tools follow this format their outputs
 can be merged into a single trace with a simple lexical sort
@@ -46,12 +46,12 @@ e.g. 'exec', 'open', 'exit', etc. Time is displayed with millisecond
 resolution. The -x option will show only non-zero exits and fatal
 signals, which excludes processes that exit with 0 code:
 
-# ./exitsnoop.py -t -u -x --label= > exitlog &
+# ./exitsnoop.py -t --utc -x --label= > exitlog &
 [1] 18289
 # for((i=65;i<100;i+=5)); do bash -c "sleep 1.$i;exit $i"; done
 ^C
 # fg
-./exitsnoop.py -t -u -x --label= > exitlog
+./exitsnoop.py -t --utc -x --label= > exitlog
 ^C
 # cat exitlog
 TIME-UTC LABEL PCOMM PID PPID TID AGE(s) EXIT_CODE
@@ -67,14 +67,14 @@ TIME-UTC LABEL PCOMM PID PPID TID AGE(s) EXIT_CODE
 USAGE message:
 
 # ./exitsnoop.py -h
-usage: exitsnoop.py [-h] [-t] [-u] [-p PID] [--label LABEL] [-x]
+usage: exitsnoop.py [-h] [-t] [--utc] [-p PID] [--label LABEL] [-x]
 
 Trace all process termination (exit, fatal signal)
 
 optional arguments:
  -h, --help show this help message and exit
  -t, --timestamp include timestamp (local time default)
- -u, --utc include timestamp in UTC (-t implied)
+ --utc  include timestamp in UTC (-t implied)
  -p PID, --pid PID trace this PID only
  --label LABEL label each line
  -x, --failed trace only fails, exclude exit(0)
@@ -83,7 +83,7 @@ examples:
  exitsnoop # trace all process termination
  exitsnoop -x # trace only fails, exclude exit(0)
  exitsnoop -t # include timestamps (local time)
- exitsnoop -u  # include timestamps (UTC)
+ exitsnoop --utc # include timestamps (UTC)
  exitsnoop -p 181 # only trace PID 181
  exitsnoop --label=exit # label each output line with 'exit'