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[ edit: strace-log-merge ]
#!/bin/sh 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__ } 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 "s/^/$pid /" < "$file" echo done \ | sort -s -k2,2 | grep -v '^$' rc=$? [ $rc -eq 1 ] && echo >&2 "${0##*/}: $logfile: strace output not found" exit $rc
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