straceCount

#!/bin/bash

selfName=$0
processStraceOutputScriptPath="./.processStraceOutput.awk"
textParcingProgram="gawk"

readonly failure=0
readonly success=1

function testCommandInstalled {
	if [ $# -ne 1 ]; then
		return $failure
	fi
	local paths
	IFS=$':' paths=( $PATH )
	for path in ${paths[@]}
	do
		if [ -f "$path/$1" ]; then
			return $success
		fi
	done
	return $failure
}

testCommandInstalled $textParcingProgram
if [ `echo $?` -ne $success ]; then
	echo "straceCount: gawk is used for parcing strace output. Please, install gawk."
	exit -1
fi

if [ -z "$1" ]
then
	echo -e " Wrong number of argument\n"\
		"Please, choose a command to analyze\n"\
		"Usage is: $selfName <command> <command arguments .. >"
	exit -1
fi

StraceArguments=( $* )

# Extra file descriptor is used to redirect standard output.
# If standart output of traced process will be in 'arr' variable,
# it can overflow it. Moreover, standard output is useless for strace summary.
exec 3>&1

# It is often useful to interrupt process from keyboard
# We should contunue execution of script after strace returns
trap "echo 'straceCount: termination of strace via Ctrl-C or SIGINT'" SIGINT

IFS=$'\n' arr=( `{ strace -c ${StraceArguments[@]} 1>&3; } 2>&1` )

trap -- SIGINT
exec 3>&-

elemNum=${#arr[@]}
printf "%s\n" "${arr[@]}" | gawk -f$processStraceOutputScriptPath 1>&2