7월 20일 실습을 하려고 하였으나 Cent OS 환경 구성이 늦어저서 22일에 실습을 해보았다.
주요 명령어
find . -name "a*.txt" -> " 로 안묶어 주면 오류가 난다. 언제는 에러가 나고 언제는 에러가 안나는 것인가
find . -name "a*.txt" -exec cp "{}" ./output/ \; --> output 경로가 . 경로 아래라 재귀적인 문제가 발생하는 듯
find /usr/bin -size +10k -size -100k | wc -l
lastlog
pstree -p --> Process tree ? 미니멀버전의 centos 궁금하군
echo $$ --> 현재 세션의 PID
exec sleep 10 --> 창이 10초(?)후에 창이 사라져버림. 뭔가
ps -aef | grep $USER --> 사용자명이 u 로 너무 짧으니 너무 많이 나옴
nmtui --> GUI 화면이 뜬다? TAB 키를 활용하자
참고한 자료
https://www.baeldung.com/linux/exec-command-in-shell-script
The Uses of the Exec Command in Shell Script | Baeldung on Linux
The Bash built-in command 'exec' is a powerful tool. Let's find out what it can do for our scripts.
www.baeldung.com
exec가 궁금해서 찾아보았다. 크론 사용법 설명이 좋다. 따라해보자
https://syj927.tistory.com/4
LINUX내 시스템 설정
#1 해킹방지 - rkhunter 다운로드 : rookit을 잡아( hunter )주는 도구 -> rookit : 공격자가 root권한을 확보하기 위해 사용하는 해킹 툴 #wget http://172.20.30.142/data/rkhunter-1.4.6.tar.gz // 안되는 사람은 밑에 참조
syj927.tistory.com
제목과 설명이 직관적이다.
https://blog.naver.com/neutrinoant/223068692370
맘에 안드는 linux shell 명령어
명령어가 하는 일: "./images 폴더 내에서 000으로 시작하는 .jpg 파일을 다 찾아서 ./output/ 폴더로...
blog.naver.com
실습 세부 로그
[u@centos test]$ find . -name "a*.txt"
./a.txt
./ab.txt
[u@centos test]$ find . -name a*.txt
find: paths must precede expression: ab.txt
Usage: find [-H] [-L] [-P] [-Olevel] [-D help|tree|search|stat|rates|opt|exec] [path...] [expression]
[u@centos test]$ ls
a.txt ab.txt b.txt c.txt output
[u@centos test]$ find . -name "a*.txt" -exec cp "{}" ./output/ \;
cp: `./output/a.txt' and `./output/a.txt' are the same file
cp: `./output/ab.txt' and `./output/ab.txt' are the same file
[u@centos test]$ find .
.
./src
./src/a.txt
./src/ab.txt
./src/b.txt
./src/c.txt
./dst
[u@centos test]$ find ./src -name "a*.txt" -exec cp "{}" ./dst/ \;
[u@centos test]$ find .
.
./src
./src/a.txt
./src/ab.txt
./src/b.txt
./src/c.txt
./dst
./dst/a.txt
./dst/ab.txt
[u@centos test]$ cat /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
# For details see man 4 crontabs
# Example of job definition:
# .---------------- minute (0 - 59)
# | .------------- hour (0 - 23)
# | | .---------- day of month (1 - 31)
# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...
# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# | | | | |
# * * * * * user-name command to be executed
[u@centos ~]$ find /usr/bin -size +10k -size -100k | wc -l
1060
[u@centos ~]$ lastlog
사용자이름 포트 어디서 최근정보
root pts/0 금 7월 21 20:43:05 +0900 2023
bin **한번도 로그인한 적이 없습니다**
daemon **한번도 로그인한 적이 없습니다**
adm **한번도 로그인한 적이 없습니다**
...
tcpdump **한번도 로그인한 적이 없습니다**
u pts/1 192.168.35.124 토 7월 22 13:01:19 +0900 2023
vboxadd **한번도 로그인한 적이 없습니다**
[u@centos ~]$ pstree -p
systemd(1)─┬─ModemManager(698)─┬─{ModemManager}(743)
│ └─{ModemManager}(745)
├─NetworkManager(796)─┬─dhclient(931)
│ ├─{NetworkManager}(810)
│ └─{NetworkManager}(812)
├─abrt-watch-log(704)
├─abrt-watch-log(707)
├─abrtd(703)
├─accounts-daemon(702)─┬─{accounts-daemon}(717)
│ └─{accounts-daemon}(719)
├─alsactl(695)
├─at-spi-bus-laun(2380)─┬─dbus-daemon(2385)───{dbus-daemon}(2386)
│ ├─{at-spi-bus-laun}(2381)
│ ├─{at-spi-bus-laun}(2382)
│ └─{at-spi-bus-laun}(2384)
├─at-spi2-registr(2389)─┬─{at-spi2-registr}(2393)
│ └─{at-spi2-registr}(2394)
├─atd(1185)
├─auditd(632)─┬─audispd(634)─┬─sedispatch(636)
│ │ └─{audispd}(637)
│ └─{auditd}(633)
├─avahi-daemon(667)───avahi-daemon(673)
├─boltd(1990)─┬─{boltd}(1992)
│ └─{boltd}(1994)
├─chronyd(736)
├─colord(2077)─┬─{colord}(2092)
│ └─{colord}(2094)
├─crond(1194)
├─cupsd(1152)
├─dbus-daemon(668)───{dbus-daemon}(683)
├─dbus-daemon(2225)───{dbus-daemon}(2226)
├─dbus-launch(2224)
├─dconf-service(2808)─┬─{dconf-service}(2824)
│ └─{dconf-service}(2826)
├─dnsmasq(1807)───dnsmasq(1808)
├─evolution-addre(2835)─┬─evolution-addre(2908)─┬─{evolution-addre}(+
│ │ ├─{evolution-addre}(+
│ │ ├─{evolution-addre}(+
│ │ ├─{evolution-addre}(+
│ │ └─{evolution-addre}(+
│ ├─{evolution-addre}(2861)
│ ├─{evolution-addre}(2862)
│ ├─{evolution-addre}(2895)
│ └─{evolution-addre}(2896)
├─evolution-calen(2722)─┬─evolution-calen(2795)─┬─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ ├─{evolution-calen}(+
│ │ └─{evolution-calen}(+
│ ├─{evolution-calen}(2728)
│ ├─{evolution-calen}(2729)
│ ├─{evolution-calen}(2790)
│ └─{evolution-calen}(2791)
├─evolution-sourc(2499)─┬─{evolution-sourc}(2501)
│ ├─{evolution-sourc}(2502)
│ └─{evolution-sourc}(2503)
├─fwupd(3001)─┬─{fwupd}(3012)
│ ├─{fwupd}(3013)
│ ├─{fwupd}(3014)
│ └─{fwupd}(3015)
├─gdm(1183)─┬─X(1337)─┬─{X}(1794)
│ │ ├─{X}(1795)
│ │ └─{X}(1858)
│ ├─gdm-session-wor(2161)─┬─gnome-session-b(2215)─┬─abrt-a+
│ │ │ ├─gnome-+
│ │ │ ├─gnome-+
│ │ │ ├─gnome-+
│ │ │ ├─gsd-a1+
│ │ │ ├─gsd-ac+
│ │ │ ├─gsd-cl+
│ │ │ ├─gsd-co+
│ │ │ ├─gsd-da+
│ │ │ ├─gsd-di+
│ │ │ ├─gsd-ho+
│ │ │ ├─gsd-ke+
│ │ │ ├─gsd-me+
│ │ │ ├─gsd-mo+
│ │ │ ├─gsd-po+
│ │ │ ├─gsd-pr+
│ │ │ ├─gsd-rf+
│ │ │ ├─gsd-sc+
│ │ │ ├─gsd-sh+
│ │ │ ├─gsd-sm+
│ │ │ ├─gsd-so+
│ │ │ ├─gsd-wa+
│ │ │ ├─gsd-xs+
│ │ │ ├─nautil+
│ │ │ ├─seappl+
│ │ │ ├─ssh-ag+
│ │ │ ├─tracke+
│ │ │ ├─tracke+
│ │ │ ├─tracke+
│ │ │ ├─tracke+
│ │ │ ├─{gnome+
│ │ │ ├─{gnome+
│ │ │ └─{gnome+
│ │ ├─{gdm-session-wor}(2162)
│ │ └─{gdm-session-wor}(2163)
│ ├─{gdm}(1330)
│ ├─{gdm}(1331)
│ └─{gdm}(1336)
├─geoclue(2487)─┬─{geoclue}(2489)
│ └─{geoclue}(2491)
├─gnome-keyring-d(2173)─┬─{gnome-keyring-d}(2174)
│ ├─{gnome-keyring-d}(2175)
│ └─{gnome-keyring-d}(2414)
├─gnome-shell-cal(2483)─┬─{gnome-shell-cal}(2494)
│ ├─{gnome-shell-cal}(2497)
│ ├─{gnome-shell-cal}(2531)
│ ├─{gnome-shell-cal}(2532)
│ └─{gnome-shell-cal}(2711)
├─gnome-terminal-(3077)─┬─bash(3085)───su(3216)───bash(3225)
│ ├─gnome-pty-helpe(3084)
│ ├─{gnome-terminal-}(3078)
│ ├─{gnome-terminal-}(3079)
│ └─{gnome-terminal-}(3080)
├─goa-daemon(2510)─┬─{goa-daemon}(2575)
│ ├─{goa-daemon}(2577)
│ └─{goa-daemon}(2578)
├─goa-identity-se(2581)─┬─{goa-identity-se}(2584)
│ ├─{goa-identity-se}(2585)
│ └─{goa-identity-se}(2586)
├─gsd-printer(2682)─┬─{gsd-printer}(2688)
│ └─{gsd-printer}(2690)
├─gssproxy(676)─┬─{gssproxy}(678)
│ ├─{gssproxy}(679)
│ ├─{gssproxy}(680)
│ ├─{gssproxy}(681)
│ └─{gssproxy}(682)
├─gvfs-afc-volume(2515)─┬─{gvfs-afc-volume}(2519)
│ ├─{gvfs-afc-volume}(2520)
│ └─{gvfs-afc-volume}(2522)
├─gvfs-goa-volume(2559)─┬─{gvfs-goa-volume}(2571)
│ └─{gvfs-goa-volume}(2572)
├─gvfs-gphoto2-vo(2524)─┬─{gvfs-gphoto2-vo}(2535)
│ └─{gvfs-gphoto2-vo}(2537)
├─gvfs-mtp-volume(2540)─┬─{gvfs-mtp-volume}(2555)
│ └─{gvfs-mtp-volume}(2557)
├─gvfs-udisks2-vo(2507)─┬─{gvfs-udisks2-vo}(2511)
│ └─{gvfs-udisks2-vo}(2512)
├─gvfsd(2258)─┬─gvfsd-burn(2981)─┬─{gvfsd-burn}(2983)
│ │ └─{gvfsd-burn}(2984)
│ ├─gvfsd-trash(2709)─┬─{gvfsd-trash}(2712)
│ │ └─{gvfsd-trash}(2713)
│ ├─{gvfsd}(2259)
│ └─{gvfsd}(2260)
├─gvfsd-fuse(2263)─┬─{gvfsd-fuse}(2270)
│ ├─{gvfsd-fuse}(2272)
│ ├─{gvfsd-fuse}(2273)
│ ├─{gvfsd-fuse}(2277)
│ └─{gvfsd-fuse}(2282)
├─ibus-portal(2469)─┬─{ibus-portal}(2472)
│ └─{ibus-portal}(2473)
├─ibus-x11(2466)─┬─{ibus-x11}(2470)
│ └─{ibus-x11}(2471)
├─imsettings-daem(2254)─┬─{imsettings-daem}(2255)
│ ├─{imsettings-daem}(2256)
│ └─{imsettings-daem}(2265)
├─irqbalance(701)
├─ksmtuned(733)───sleep(14770)
├─libvirtd(1177)─┬─{libvirtd}(1320)
│ ├─{libvirtd}(1321)
│ ├─{libvirtd}(1322)
│ ├─{libvirtd}(1323)
│ ├─{libvirtd}(1324)
│ ├─{libvirtd}(1325)
│ ├─{libvirtd}(1326)
│ ├─{libvirtd}(1327)
│ ├─{libvirtd}(1328)
│ ├─{libvirtd}(1329)
│ ├─{libvirtd}(1744)
│ ├─{libvirtd}(1745)
│ ├─{libvirtd}(1746)
│ ├─{libvirtd}(1747)
│ ├─{libvirtd}(1748)
│ └─{libvirtd}(1754)
├─lsmd(691)
├─lvmetad(516)
├─master(1401)─┬─pickup(14055)
│ └─qmgr(1403)
├─mcelog(716)
├─mission-control(2505)─┬─{mission-control}(2516)
│ ├─{mission-control}(2518)
│ └─{mission-control}(2525)
├─packagekitd(1997)─┬─{packagekitd}(2015)
│ └─{packagekitd}(2016)
├─polkitd(657)─┬─{polkitd}(677)
│ ├─{polkitd}(684)
│ ├─{polkitd}(689)
│ ├─{polkitd}(746)
│ ├─{polkitd}(747)
│ └─{polkitd}(751)
├─pulseaudio(2432)─┬─{pulseaudio}(2435)
│ └─{pulseaudio}(2438)
├─rngd(696)
├─rpcbind(661)
├─rsyslogd(1159)─┬─{rsyslogd}(1207)
│ └─{rsyslogd}(1225)
├─rtkit-daemon(660)─┬─{rtkit-daemon}(685)
│ └─{rtkit-daemon}(686)
├─smartd(666)
├─sshd(1151)───sshd(3383)───sshd(3387)───bash(3396)───pstree(14772)
├─systemd-journal(487)
├─systemd-logind(688)
├─systemd-udevd(528)
├─tracker-store(2880)─┬─{tracker-store}(2893)
│ ├─{tracker-store}(2894)
│ ├─{tracker-store}(2897)
│ ├─{tracker-store}(2898)
│ ├─{tracker-store}(2899)
│ ├─{tracker-store}(2900)
│ └─{tracker-store}(2901)
├─tuned(1160)─┬─{tuned}(1739)
│ ├─{tuned}(1740)
│ ├─{tuned}(1742)
│ └─{tuned}(1743)
├─udisksd(664)─┬─{udisksd}(674)
│ ├─{udisksd}(687)
│ ├─{udisksd}(761)
│ └─{udisksd}(790)
├─upowerd(1924)─┬─{upowerd}(1925)
│ └─{upowerd}(1926)
├─wpa_supplicant(2000)
└─xdg-permission-(2478)─┬─{xdg-permission-}(2479)
└─{xdg-permission-}(2481)
[u@centos ~]$
[u@centos ~]$ echo $$
15127
[u@centos ~]$ ps -aef | grep $USER
root 1 0 0 7월21 ? 00:00:07 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root 8 2 0 7월21 ? 00:00:00 [rcu_bh]
root 9 2 0 7월21 ? 00:00:19 [rcu_sched]
root 10 2 0 7월21 ? 00:00:00 [lru-add-drain]
root 21 2 0 7월21 ? 00:00:00 [khungtaskd]
root 38 2 0 7월21 ? 00:00:00 [khugepaged]
root 50 2 0 7월21 ? 00:00:00 [kaluad]
root 51 2 0 7월21 ? 00:00:00 [kpsmoused]
root 102 2 0 7월21 ? 00:00:00 [kauditd]
root 367 2 0 7월21 ? 00:00:00 [kdmflush]
root 378 2 0 7월21 ? 00:00:00 [kdmflush]
root 394 2 0 7월21 ? 00:00:00 [xfs_mru_cache]
root 395 2 0 7월21 ? 00:00:00 [xfs-buf/dm-0]
root 487 1 0 7월21 ? 00:00:07 /usr/lib/systemd/systemd-journald
root 516 1 0 7월21 ? 00:00:00 /usr/sbin/lvmetad -f
root 528 1 0 7월21 ? 00:00:00 /usr/lib/systemd/systemd-udevd
root 583 2 0 7월21 ? 00:00:00 [xfs-buf/sda1]
root 632 1 0 7월21 ? 00:00:00 /sbin/auditd
root 634 632 0 7월21 ? 00:00:00 /sbin/audispd
root 636 634 0 7월21 ? 00:00:00 /usr/sbin/sedispatch
polkitd 657 1 0 7월21 ? 00:00:07 /usr/lib/polkit-1/polkitd --no-debug
rtkit 660 1 0 7월21 ? 00:00:04 /usr/libexec/rtkit-daemon
root 664 1 0 7월21 ? 00:00:00 /usr/libexec/udisks2/udisksd
root 666 1 0 7월21 ? 00:00:00 /usr/sbin/smartd -n -q never
avahi 667 1 0 7월21 ? 00:00:10 avahi-daemon: running [centos.local]
dbus 668 1 0 7월21 ? 00:00:05 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
root 676 1 0 7월21 ? 00:00:00 /usr/sbin/gssproxy -D
root 688 1 0 7월21 ? 00:00:01 /usr/lib/systemd/systemd-logind
libstor+ 691 1 0 7월21 ? 00:00:00 /usr/bin/lsmd -d
root 695 1 0 7월21 ? 00:00:00 /usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --initfile=/lib/alsa/init/00main rdaemon
root 698 1 0 7월21 ? 00:00:00 /usr/sbin/ModemManager
root 701 1 0 7월21 ? 00:00:09 /usr/sbin/irqbalance --foreground
root 702 1 0 7월21 ? 00:00:01 /usr/libexec/accounts-daemon
root 703 1 0 7월21 ? 00:00:00 /usr/sbin/abrtd -d -s
root 704 1 0 7월21 ? 00:00:01 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected ernel BUG at list_del corruption list_add corruption do_IRQ: stack overflow: ear stack overflow (cur: eneral protection fault nable to handle kernel ouble fault: RTNL: assertion failed eek! page_mapcount(page) went negative! adness at NETDEV WATCHDOG ysctl table check failed : nobody cared IRQ handler type mismatch Kernel panic - not syncing: Machine Check Exception: Machine check events logged divide error: bounds: coprocessor segment overrun: invalid TSS: segment not present: invalid opcode: alignment check: stack segment: fpu exception: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD
root 707 1 0 7월21 ? 00:00:00 /usr/bin/abrt-watch-log -F Backtrace /var/log/Xorg.0.log -- /usr/bin/abrt-dump-xorg -xD
root 716 1 0 7월21 ? 00:00:00 /usr/sbin/mcelog --ignorenodev --daemon --syslog
root 733 1 0 7월21 ? 00:00:03 /bin/bash /usr/sbin/ksmtuned
chrony 736 1 0 7월21 ? 00:00:04 /usr/sbin/chronyd
root 796 1 0 7월21 ? 00:00:02 /usr/sbin/NetworkManager --no-daemon
root 931 796 0 7월21 ? 00:00:02 /sbin/dhclient -d -q -sf /usr/libexec/nm-dhcp-helper -pf /var/run/dhclient-enp0s8.pid -lf /var/lib/NetworkManager/dhclient-c70ae368-bb1f-3991-a37c-6182912bda41-enp0s8.lease -cf /var/lib/NetworkManager/dhclient-enp0s8.conf enp0s8
root 1151 1 0 7월21 ? 00:00:00 /usr/sbin/sshd -D
root 1152 1 0 7월21 ? 00:00:00 /usr/sbin/cupsd -f
root 1159 1 0 7월21 ? 00:00:15 /usr/sbin/rsyslogd -n
root 1160 1 0 7월21 ? 00:00:22 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
root 1177 1 0 7월21 ? 00:00:00 /usr/sbin/libvirtd
root 1183 1 0 7월21 ? 00:00:00 /usr/sbin/gdm
root 1185 1 0 7월21 ? 00:00:00 /usr/sbin/atd -f
root 1194 1 0 7월21 ? 00:00:01 /usr/sbin/crond -n
root 1337 1183 0 7월21 tty1 00:00:10 /usr/bin/X :0 -background none -noreset -audit 4 -verbose -auth /run/gdm/auth-for-gdm-HWkSz5/database -seat seat0 -nolisten tcp vt1
root 1401 1 0 7월21 ? 00:00:01 /usr/libexec/postfix/master -w
postfix 1403 1401 0 7월21 ? 00:00:00 qmgr -l -t unix -u
nobody 1807 1 0 7월21 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper
root 1808 1807 0 7월21 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper
root 1924 1 0 7월21 ? 00:00:02 /usr/libexec/upowerd
root 1990 1 0 7월21 ? 00:00:00 /usr/libexec/boltd
root 1997 1 0 7월21 ? 00:00:03 /usr/libexec/packagekitd
root 2000 1 0 7월21 ? 00:00:01 /usr/sbin/wpa_supplicant -u -f /var/log/wpa_supplicant.log -c /etc/wpa_supplicant/wpa_supplicant.conf -P /var/run/wpa_supplicant.pid
colord 2077 1 0 7월21 ? 00:00:00 /usr/libexec/colord
u 2173 1 0 7월21 ? 00:00:00 /usr/bin/gnome-keyring-daemon --daemonize --login
u 2215 2161 0 7월21 ? 00:00:00 /usr/libexec/gnome-session-binary --session gnome-classic
u 2224 1 0 7월21 ? 00:00:00 dbus-launch --sh-syntax --exit-with-session
u 2225 1 0 7월21 ? 00:00:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
u 2254 1 0 7월21 ? 00:00:00 /usr/libexec/imsettings-daemon
u 2258 1 0 7월21 ? 00:00:00 /usr/libexec/gvfsd
u 2263 1 0 7월21 ? 00:00:00 /usr/libexec/gvfsd-fuse /run/user/1000/gvfs -f -o big_writes
u 2362 2215 0 7월21 ? 00:00:01 /usr/bin/ssh-agent /bin/sh -c exec -l /bin/bash -c "env GNOME_SHELL_SESSION_MODE=classic gnome-session --session gnome-classic"
u 2380 1 0 7월21 ? 00:00:00 /usr/libexec/at-spi-bus-launcher
u 2385 2380 0 7월21 ? 00:00:00 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3
u 2389 1 0 7월21 ? 00:00:00 /usr/libexec/at-spi2-registryd --use-gnome-session
u 2420 2215 0 7월21 ? 00:01:26 /usr/bin/gnome-shell
u 2432 1 0 7월21 ? 00:00:00 /usr/bin/pulseaudio --start --log-target=syslog
u 2458 2420 0 7월21 ? 00:00:04 ibus-daemon --xim --panel disable
u 2462 2458 0 7월21 ? 00:00:00 /usr/libexec/ibus-dconf
u 2466 1 0 7월21 ? 00:00:00 /usr/libexec/ibus-x11 --kill-daemon
u 2469 1 0 7월21 ? 00:00:00 /usr/libexec/ibus-portal
u 2478 1 0 7월21 ? 00:00:00 /usr/libexec/xdg-permission-store
u 2483 1 0 7월21 ? 00:00:00 /usr/libexec/gnome-shell-calendar-server
geoclue 2487 1 0 7월21 ? 00:00:00 /usr/libexec/geoclue -t 5
u 2499 1 0 7월21 ? 00:00:00 /usr/libexec/evolution-source-registry
u 2505 1 0 7월21 ? 00:00:00 /usr/libexec/mission-control-5
u 2507 1 0 7월21 ? 00:00:00 /usr/libexec/gvfs-udisks2-volume-monitor
u 2510 1 0 7월21 ? 00:00:00 /usr/libexec/goa-daemon
u 2515 1 0 7월21 ? 00:00:00 /usr/libexec/gvfs-afc-volume-monitor
u 2524 1 0 7월21 ? 00:00:00 /usr/libexec/gvfs-gphoto2-volume-monitor
u 2540 1 0 7월21 ? 00:00:00 /usr/libexec/gvfs-mtp-volume-monitor
u 2559 1 0 7월21 ? 00:00:00 /usr/libexec/gvfs-goa-volume-monitor
u 2581 1 0 7월21 ? 00:00:08 /usr/libexec/goa-identity-service
u 2590 2215 0 7월21 ? 00:00:01 /usr/libexec/gsd-power
u 2591 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-print-notifications
u 2595 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-rfkill
u 2602 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-screensaver-proxy
u 2606 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-sharing
u 2607 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-sound
u 2612 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-xsettings
u 2614 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-wacom
u 2616 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-smartcard
u 2618 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-account
u 2632 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-a11y-settings
u 2633 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-clipboard
u 2636 2215 0 7월21 ? 00:00:23 /usr/libexec/gsd-color
u 2637 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-datetime
u 2638 2215 0 7월21 ? 00:00:03 /usr/libexec/gsd-housekeeping
u 2642 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-keyboard
u 2644 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-media-keys
u 2648 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-mouse
u 2682 1 0 7월21 ? 00:00:00 /usr/libexec/gsd-printer
u 2695 2215 0 7월21 ? 00:00:00 nautilus-desktop --force
u 2709 2258 0 7월21 ? 00:00:00 /usr/libexec/gvfsd-trash --spawner :1.4 /org/gtk/gvfs/exec_spaw/0
u 2722 1 0 7월21 ? 00:00:00 /usr/libexec/evolution-calendar-factory
u 2735 2215 0 7월21 ? 00:00:00 /usr/libexec/gsd-disk-utility-notify
u 2741 2215 0 7월21 ? 00:00:00 /usr/bin/seapplet
u 2750 2215 0 7월21 ? 00:00:00 abrt-applet
u 2756 2215 0 7월21 ? 00:00:10 /usr/libexec/gnome-initial-setup --existing-user
u 2775 2215 0 7월21 ? 00:00:09 /usr/bin/gnome-software --gapplication-service
u 2776 2458 0 7월21 ? 00:00:00 /usr/libexec/ibus-engine-simple
u 2795 2722 0 7월21 ? 00:00:00 /usr/libexec/evolution-calendar-factory-subprocess --factory all --bus-name org.gnome.evolution.dataserver.Subprocess.Backend.Calendarx2722x2 --own-path /org/gnome/evolution/dataserver/Subprocess/Backend/Calendar/2722/2
u 2808 1 0 7월21 ? 00:00:00 /usr/libexec/dconf-service
u 2819 2215 0 7월21 ? 00:00:00 /usr/libexec/tracker-extract
u 2834 2215 0 7월21 ? 00:00:00 /usr/libexec/tracker-miner-apps
u 2835 1 0 7월21 ? 00:00:00 /usr/libexec/evolution-addressbook-factory
u 2868 2215 0 7월21 ? 00:00:00 /usr/libexec/tracker-miner-fs
u 2874 2215 0 7월21 ? 00:00:00 /usr/libexec/tracker-miner-user-guides
u 2880 1 0 7월21 ? 00:00:00 /usr/libexec/tracker-store
u 2908 2835 0 7월21 ? 00:00:00 /usr/libexec/evolution-addressbook-factory-subprocess --factory all --bus-name org.gnome.evolution.dataserver.Subprocess.Backend.AddressBookx2835x2 --own-path /org/gnome/evolution/dataserver/Subprocess/Backend/AddressBook/2835/2
u 2981 2258 0 7월21 ? 00:00:00 /usr/libexec/gvfsd-burn --spawner :1.4 /org/gtk/gvfs/exec_spaw/1
root 3001 1 0 7월21 ? 00:00:06 /usr/libexec/fwupd/fwupd
u 3077 1 0 7월21 ? 00:00:02 /usr/libexec/gnome-terminal-server
u 3084 3077 0 7월21 ? 00:00:00 gnome-pty-helper
u 3085 3077 0 7월21 pts/0 00:00:00 bash
root 3216 3085 0 7월21 pts/0 00:00:00 su - root
postfix 14055 1401 0 11:40 ? 00:00:00 pickup -l -t unix -u
root 14258 2 0 12:00 ? 00:00:00 [kworker/u4:0]
root 14402 2 0 12:10 ? 00:00:00 [kworker/u4:2]
root 15073 1151 0 13:00 ? 00:00:00 sshd: u [priv]
root 15108 2 0 13:01 ? 00:00:00 [kworker/u4:1]
u 15118 15073 0 13:01 ? 00:00:00 sshd: u@pts/1
u 15127 15118 0 13:01 pts/1 00:00:00 -bash
root 15149 1 0 13:01 ? 00:00:00 /usr/sbin/abrt-dbus -t133
u 15170 15127 0 13:01 pts/1 00:00:00 ps -aef
u 15171 15127 0 13:01 pts/1 00:00:00 grep --color=auto u
[u@centos ~]$ find src -name "*.java" -type f -exec grep -l interface {} \;
find: ‘src’: 그런 파일이나 디렉터리가 없습니다
[u@centos ~]$ find / -name "*.java" -type f -exec grep -l interface {} \;
find: ‘/boot/efi’: 허가 거부
find: ‘/boot/grub2’: 허가 거부
find: ‘/proc/tty/driver’: 허가 거부
find: ‘/proc/1/task/1/fd’: 허가 거부
find: ‘/proc/1/task/1/fdinfo’: 허가 거부
...
find: ‘/usr/lib64/Pegasus’: 허가 거부
find: ‘/usr/share/polkit-1/rules.d’: 허가 거부
find: ‘/usr/share/Pegasus/scripts’: 허가 거부
find: ‘/usr/libexec/initscripts/legacy-actions/auditd’: 허가 거부
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