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#!/bin/sh # # This script processes strace -ff -tt output. It merges the contents of all # STRACE_LOG.PID files and sorts them, printing result on the standard output. # # Copyright (c) 2012-2018 The strace developers. # # SPDX-License-Identifier: LGPL-2.1-or-later show_usage() { cat <<__EOF__ Usage: ${0##*/} STRACE_LOG Finds all STRACE_LOG.PID files, adds PID prefix to every line, then combines and sorts them, and prints result to standard output. It is assumed that STRACE_LOGs were produced by strace with -tt[t] option which prints timestamps (otherwise sorting won't do any good). __EOF__ } dd='\([0-9][0-9]\)' ds='\([0-9][0-9]*\)' if [ $# -ne 1 ]; then show_usage >&2 exit 1 elif [ "$1" = '--help' ]; then show_usage exit 0 fi logfile=$1 for file in "$logfile".*; do [ -f "$file" ] || continue suffix=${file#"$logfile".} [ "$suffix" -gt 0 ] 2> /dev/null || continue pid=$(printf "%-5s" $suffix) # Some strace logs have last line which is not '\n' terminated, # so add extra newline to every file. # grep -v '^$' removes empty lines which may result. sed -n "s/^\($dd:\)\?\($dd:\)\?\($ds\.\)\?$ds /\2\4\6\7 $pid \0/p" < "$file" echo done \ | sort -s -n -k1,1 | sed -n 's/^[0-9][0-9]* //p' rc=$? [ $rc -eq 1 ] && echo >&2 "${0##*/}: $logfile: strace output not found" exit $rc