1 #!/bin/sh 2 3 show_usage() 4 { 5 cat <<__EOF__ 6 Usage: ${0##*/} STRACE_LOG 7 8 Finds all STRACE_LOG.PID files, adds PID prefix to every line, 9 then combines and sorts them, and prints result to standard output. 10 11 It is assumed that STRACE_LOGs were produced by strace with -tt[t] 12 option which prints timestamps (otherwise sorting won't do any good). 13 __EOF__ 14 } 15 16 if [ $# -ne 1 ]; then 17 show_usage >&2 18 exit 1 19 elif [ "$1" = '--help' ]; then 20 show_usage 21 exit 0 22 fi 23 24 logfile=$1 25 26 for file in "$logfile".*; do 27 [ -f "$file" ] || continue 28 suffix=${file#"$logfile".} 29 [ "$suffix" -gt 0 ] 2> /dev/null || 30 continue 31 pid=$(printf "%-5s" $suffix) 32 # Some strace logs have last line which is not '\n' terminated, 33 # so add extra newline to every file. 34 # grep -v '^$' removes empty lines which may result. 35 sed "s/^/$pid /" < "$file" 36 echo 37 done \ 38 | sort -s -k2,2 | grep -v '^$' 39 40 rc=$? 41 [ $rc -eq 1 ] && 42 echo >&2 "${0##*/}: $logfile: strace output not found" 43 exit $rc 44
