multi-strace based on https://github.com/alistairstead/dotfiles/blob/master/bin/multi-strace

multi-strace.sh

#!/bin/bash

set -e

if [[ $1 == "-v" ]]; then
    verbose=1
    shift
fi

process=$1

main() {
    enforce_usage
    attache_strace
}

enforce_usage() {
    if [ -z "$process" ]; then
        usage
        exit $E_BADARGS
    fi
}

usage() {
    echo "Attach strace to all occurrences of a process"
    echo "usage: `basename $0` process"
}

attache_strace() {
    for p in $(ps aux | grep $process | grep -v grep | awk '{print $2}') ; do
        strace -s1024 -rp$p 2>&1 | tee ~/strace_$p.log >&2 &
        echo "strace ${process} {$p} attached!"
    done
    echo "Ctrl+C to stop"
    trap 'echo "quitting..." ; detach_strace' SIGINT 
    spinner $$ &
    while :; do
        sleep 1
        if test 1 -gt "$(jobs -l | wc -l)" ; then
      echo "no more processes left"
            exit 0;
        fi
        for p in $(ps aux | grep $process | grep -v strace | grep -v grep | awk '{print $2}') ; do
            if ! test -f ~/strace_$p.log ; then
                strace -s1024 -rp$p 2>&1 | tee ~/strace_$p.log >&2 &
                echo "strace ${process} {$p} attached!"
            fi
        done
    done
}

detach_strace() {
    for p in $(jobs -l | grep 'strace -s' | awk '{print $2}' ) ; do
        kill $p
    done
}

log_command() {
    debug "=> $*"
    eval $*
}

debug() {
    if [ $verbose ]; then
        echo "$*" >&2
    fi
}

spinner()
{
    local pid=$1
    local delay=0.1
    local spinstr="/-\|"
    while ps p $pid >/dev/null ; do
        local temp=${spinstr#?}
        printf " [%c]  " "$spinstr"
        local spinstr=$temp${spinstr%"$temp"}
        sleep $delay
        printf "\b\b\b\b\b\b"
    done
}

main