Emlékeztető
manpages használta: pl pipe-ra: man 3 pipe → C-s használat man 7 pipe → általános leírás
Beépített pipe-ok:
ls | wc -l
mkfifo my_pipe
echo "5 hello" > my_pipe
cat my_pipe
```
- redirect standard output < - redirect standard input
- send in addition 2>&1 - standard error redirect to std in
![[Pasted image 20240309191357.png]]![[Pasted image 20240309191410.png]]
`( echo "5 hello" 1>&9 ) 9>&1 > cat`
sprintf / write to standard output
# /PROC
/proc/cmdline
/proc/meminfo
/proc/PID/??
- status
- cmdlint
- cwd
- fd !
`mkfifo myfifo
wc -l < myfifo &
ls -l | tee myfifo | sort -k5n
## JOBS, FG, BG
Ctrl+Z - background
`(while true; do clear; date; sleep 1; done)
![[Pasted image 20240311004918.png]]