grep sed perl awk - что быстрее для простых выборок

valet@valet-comp:~/Documents/all$ wc -l all
13107193 all
valet@valet-comp:~/Documents/all$ time awk '/foo/ { print }' all > /dev/null 
real    0m16.518s
user    0m16.381s
sys    0m0.128s
valet@valet-comp:~/Documents/all$ time sed -n '/foo/p' all > /dev/null 
real    0m2.959s
user    0m2.888s
sys    0m0.064s
valet@valet-comp:~/Documents/all$ time grep 'foo' all > /dev/null 
real    0m0.872s
user    0m0.788s
sys    0m0.080s
valet@valet-comp:~/Documents/all$ time perl -ne 'print if /foo/' all > /dev/null 
real    0m3.303s
user    0m3.260s
sys    0m0.036s
valet@valet-comp:~/Documents/all$ time grep 'foo' all > /dev/null 
real    0m0.878s
user    0m0.800s
sys    0m0.076s
valet@valet-comp:~/Documents/all$ time perl -ne 'print if /foo/' all > /dev/null 
real    0m3.284s
user    0m3.180s
sys    0m0.100s

#!/usr/bin/env python
#_*_ coding: utf-8 _*_
import sys
if len(sys.argv) != 3:
    sys.stderr.write("Usage %s <substr> <filename>\n" % sys.argv[0])
    raise SystemExit(1)
with open(sys.argv[2], 'r') as f:
    for line in f:
        if sys.argv[1] in line:
            print line,

#!/usr/bin/env python
#_*_ coding: utf-8 _*_
import sys, re
if len(sys.argv) != 3:
    sys.stderr.write("Usage %s <substr> <filename>\n" % sys.argv[0])
    raise SystemExit(1)
    
patt = re.compile(sys.argv[1])
with open(sys.argv[2], 'r') as f:
    for line in f:
        if patt.search(line):
            print line,

#!/usr/bin/env python
#_*_ coding: utf-8 _*_
import sys, re
if len(sys.argv) != 3:
    sys.stderr.write("Usage %s foo all\n" % sys.argv[0])
    raise SystemExit(1)
    
patt = re.compile(sys.argv[1])
with open(sys.argv[2], 'r') as f:
    for line in f:
        if patt.search(line):
            print line,

Usage ./python_test foo all
real    0m0.019s
user    0m0.012s
sys    0m0.000s

./python_test foo all

valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.696s
user    0m4.616s
sys    0m0.072s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.708s
user    0m4.616s
sys    0m0.088s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.663s
user    0m4.536s
sys    0m0.120s

valet@valet-comp:~/Documents/all$ time perl -p -e 's/foo/bar/g' all > /dev/null 
real    0m4.239s
user    0m4.160s
sys    0m0.072s
valet@valet-comp:~/Documents/all$ time sed 's/foo/bar/g' all > /dev/null 
real    0m3.917s
user    0m3.796s
sys    0m0.116s

valet@valet-comp:~/Documents/all$ time perl -p -e 's/(foo|foo2|foo3|foon)/bar/g' all > /dev/null 
real    0m4.220s
user    0m4.100s
sys    0m0.116s

valet@valet-comp:~/Documents/all$ cat python_test 
#!/usr/bin/env python
#_*_ coding: utf-8 _*_
import sys, re
if len(sys.argv) != 3:
    sys.stderr.write("Usage %s <substr> <filename>\n" % sys.argv[0])
    raise SystemExit(1)
    
patt = re.compile(sys.argv[1])
with open(sys.argv[2], 'r') as f:
    for line in f:
        if patt.search(line):
            print line,
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.693s
user    0m4.620s
sys    0m0.068s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.689s
user    0m4.588s
sys    0m0.096s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m4.707s
user    0m4.556s
sys    0m0.144s
valet@valet-comp:~/Documents/all$ 

valet@valet-comp:~/Documents/all$ cat python_test 
#!/usr/bin/env python
#_*_ coding: utf-8 _*_
import sys
if len(sys.argv) != 3:
    sys.stderr.write("Usage %s <substr> <filename>\n" % sys.argv[0])
    raise SystemExit(1)
with open(sys.argv[2], 'r') as f:
    for line in f:
        if sys.argv[1] in line:
            print line,
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m2.784s
user    0m2.688s
sys    0m0.092s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m2.788s
user    0m2.696s
sys    0m0.088s
valet@valet-comp:~/Documents/all$ time ./python_test foo all > /dev/null 
real    0m2.780s
user    0m2.696s
sys    0m0.080s
valet@valet-comp:~/Documents/all$ 

./go-grep foo all

package main
import (
    "bufio"
    "fmt"
    "os"
    "regexp"
)
func main() {
    if len(os.Args) != 3 {
        fmt.Printf("Usage: %s <substring> <filename>\n", os.Args[0])
        return
    }
    substr := os.Args[1]
    fname := os.Args[2]
    f, err := os.Open(fname)
    if err != nil {
        return
    }
    defer f.Close()
    r := bufio.NewReader(f)
    patt, _ := regexp.Compile(substr)
    for {
        s, ok := r.ReadString('\n')
        if ok != nil {
            break
        }
        matches := patt.FindString(s)
        if matches != "" {
            fmt.Print(s)
        }
    }
}

alexander@goblin /tmp $ grep --version
grep (GNU grep) 2.14
alexander@goblin /tmp $ perl --version
This is perl 5, version 12, subversion 4 (v5.12.4) built for x86_64-linux
(with 12 registered patches, see perl -V for more detail)
alexander@goblin /tmp $ awk --version
GNU Awk 4.0.1
alexander@goblin /tmp $ sed --version
GNU sed версия 4.2.1
alexander@goblin /tmp $ python --version
Python 2.7.3