シェル芸でライフハック(特論)

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— :(){:|:&};: —

• Twitter @obknnt
• ※TL Twitter
• http://blueeyes.sakura.ne.jp/
•
•
• Vim Vim Vim
• EMACS Makes Any Computer Slow
*
• Subl...

• PSoC ( )
• CPLD with ARM
• MSP430 (Texas Instruments)
• RX Mac or Linux
• I2CLCD
• GCC Mac

Index
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• QoL
• Micr○ $○ft
•
• ※

•
GUI
CLI
• gcc echo gcc -xc - (
)
•
• OK

OS: macOS Sierra (MacBook Air Early 2014)
Terminal: iTerm2
Shell: Zsh 5.4.1 with GNU coreutils
: https://github.com/shima-...

•
• - echo
• - python
• - bc
• - sed, tr
• - factor
• - awk, perl
• …

• (standard I/O)
• C stdio.h
• (stderr)
•
• | (Shift + )
•
•
• 1 ( n)
•

1. 1 100
2. ﬁle00 ﬁle99 .yjsnpi
3. 5, 6, 3, 10, 1
4. 1, 5, 3, 6, 9, 0, 1, 4, 2, 5
5. ( )
6. 1 100000 1

7. hoge()
main
#include <stdio.h>
#include <string.h>
int main(void){
hoge("NULL");
return 0;
}
void hoge(const char *str)...

8. echo
(
)

$1. seq 1 100 | factor | awk 'NF==2{print $2}' | xargs 2. touch file{00..99};  find . | xargs -n1 basename | sed -n 's/^.*$...$

$7. sed '/main/,/^}/{H;d};$G' hoge.c  Vim ※   vim -es hoge.c +':norm gg}d}Gp' +%p +q! 8. echo | sed -r -ne'p;s/(.)(.*)/ 21/...$

(1)
• grep:
• grep -o:
• grep -o . :
• xargs:
• eval:
• sort:
• uniq: 1
• seq: seq inf
• yes:
• yes :
• yes 5 :

(2)
• cat:
• tac:
• rev:
• paste:
• openssl prime: 10
• openssl prime -hex: 16 (0x )
• factor: 10
• nkf:
• wc: ( n )
• wc ...

•
• Excel
• Excel
• gnuplot
• csv LaTeX
• LaTeX gnuplot Micr○ $○ft

• (OS)
• 1
• 24
• root
•
•
Docker
※

• echo > /etc/passwd
• :(){:|:&};:
• rm tmp /* */
• echo 'exec sl' > ~/.bashrc
• echo {0000000000..9999999999}
• alias e...

• H4sICBmZ4lcAA2VsZgCrd/
VxY2RkZIABJgZmBhAvMcBEyIQBAUwYFBhgquCqgWpAVDMUs4I4AgwMjxvbHjdNftw
4mQuodgcLUHA3SMvOEKD6XbxA1tmGHS...

• man
• awk man awk
• – (https://
blog.ueda.tech/?page_id=684)
• 29 Perl ( 1 ) (https://
umidori.github.io/shellgei-29th-a...

• Software Design 2017 1 30
et al
• AWK
•

•
• 30
•
• 30 20
• 27 sed
• https://blog.ueda.tech/?p=9283
• 1
•
•
• 20

• super_unko
- Togetter
(https://togetter.com/li/1145304)
• ( )
• Raspberry Pi
• on Python
•

• GNU Emacs acronym expansions (https://www.gnu.org/fun/jokes/
gnuemacs.acro.exp.html)
• Ver. 1.1 – (https://
blog.ueda.te...

May you have a happy
ShellGei life!!
Now, we can
:(){:|:&};:
in production!!