Linux command

5. tail -f 30 ~/.bash_history
7. cp -r test1 test2 test3/
8. mv f1 f2 d1/
10. mkdir -p /home/xxx/d1/d1/d1
14. ln -s d2/f2 d1/f1
15. chmod 500 /home/abc/d1
17. grep linhtd /etc/passwd
18. cat f1 f2 > f3
19. find /home/mai/staff -name "BTlinux*" -perm 750 -user huongtran
20. sort --help > f1
21. mkdir /home/tuananh;echo "" > /home/tuananh/readme.txt
22. find /home -iname "*.c" -size +1M
23. less: cho phép scoll up, down. more: chỉ có scoll down
24. ---x-w-r--
25. tar -cvjf dir1.bzip2 file1 file2
26. tar -tjf dir1.bzip2 >/dev/null
27. /etc/password. Username:Password:User ID (UID):Group ID (GID):User ID Info:Home directory:Command/shell:
23. umask 762
24. tar -cvzf dir1.tar.gz file1 file2
25. tar -xzf dir1.tar.gz
26. nohup exercise1 &
27. screen

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