课程第5次

botang

2019-07-14

在“”HOWTO“”文档目录中找例子：

[root@desktop3 doc]# find ./  -name "EXAMPLE*" -o -name "example*" -o -name "Example*" -type d
./libpng-1.5.13/example.c
./which-2.20/EXAMPLES
./mpfr-3.1.1/mpfr/examples
./perl-Filter-1.49/examples
./perl-Getopt-Long-2.40/examples
./bc-1.06.95/Examples
./krb5-libs-1.15.1/examples
./pygobject2-2.28.6/examples
./python-dateutil-1.5/example.py
./python-slip-0.4.0/dbus/example
./python-slip-0.4.0/dbus/example/example-conf-client.py
./python-slip-0.4.0/dbus/example/example-conf-mechanism.py
./python-magic-5.11/example.py
./nmap-ncat-6.40/examples
./python-pycurl-7.19.0/examples
./gnupg2-2.0.22/examples
./pygpgme-0.3/examples
./PyYAML-3.10/examples
./PyYAML-3.10/examples/pygments-lexer/example.yaml
./dbus-1.10.24/examples
./dbus-1.10.24/examples/example-session-disable-stats.conf
./dbus-1.10.24/examples/example-system-enable-stats.conf
./qt5/global/includes/examples-run.qdocinc
./initscripts-9.49.46/examples
./python-slip-dbus-0.4.0/example
./python-slip-dbus-0.4.0/example/example-conf-client.py
./python-slip-dbus-0.4.0/example/example-conf-mechanism.py
./wpa_supplicant-2.6/examples
./NetworkManager/examples
./teamd-1.27/example_configs
./teamd-1.27/example_ifcfgs
./pycairo-1.8.10/examples
./python-hwdata-1.7.3/example.py
./libreswan-3.25/examples
./python-blivet-0.61.15.72/examples
./vdo/examples
./avahi-0.6.31/example.service
./postfix-2.10.1/examples
./smartmontools-6.5/examplescripts
./sudo-1.8.23/examples
./vsftpd-3.0.2/EXAMPLE
-------------------------------------------------------
标准输入在键盘：

1. [root@server3 ~]# tr [a-z] [A-Z]
   
2. this is good
   
3. THIS IS GOOD
   
4. quit
   
5. QUIT
   
6. ^C
   
7. [root@server3 ~]# tr -d [:blank:]
   
8. this is good
   
9. thisisgood
   

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----------------------------------------------------输入、输出和出错的复杂例子：

1. [root@server3 labs]# ls -l RH124-4-1.txt  botang.txt  &> RH124-4-7.txt
   
2. [root@server3 labs]# cat RH124-4-7.txt
   
3. ls: cannot access botang.txt: No such file or directory
   
4. -rw-r--r--. 1 root root 14 Jul 14 22:10 RH124-4-1.txt
   
5. [root@server3 labs]# ls -l RH124-4-1.txt  botang.txt  & > RH124-4-8.txt
   
6. [1] 73948
   
7. [root@server3 labs]# ls: cannot access botang.txt: No such file or directory
   
8. -rw-r--r--. 1 root root 14 Jul 14 22:10 RH124-4-1.txt
   
9. 
   
10. [1]+  Exit 2                  ls --color=auto -l RH124-4-1.txt botang.txt
    
11. [root@server3 labs]# cat RH124-4-8.txt
    
12. [root@server3 labs]#  ls -l RH124-4-1.txt  botang.txt  & | grep botang
    
13. -bash: syntax error near unexpected token `|'
    
14. [root@server3 labs]#  ls -l RH124-4-1.txt  botang.txt  2>&1 |   grep botang
    
15. ls: cannot access botang.txt: No such file or directory
    
16. [root@server3 labs]# ls
    
17. RH124-4-1.txt  RH124-4-3.txt  RH124-4-5.txt  RH124-4-7.txt
    
18. RH124-4-2.txt  RH124-4-4.txt  RH124-4-6.txt  RH124-4-8.txt
    
19. [root@server3 labs]# fdisk /dev/sda
    
20. Welcome to fdisk (util-linux 2.23.2).
    
21. 
    
22. Changes will remain in memory only, until you decide to write them.
    
23. Be careful before using the write command.
    
24. 
    
25. 
    
26. Command (m for help): L
    
27. 
    
28. 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris
    
29. 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS/sec (FAT-
    
30. 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS/sec (FAT-
    
31. 3  XENIX usr       3c  PartitionMagic  84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
    
32. 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx
    
33. 5  Extended        41  PPC PReP Boot   86  NTFS volume set da  Non-FS data
    
34. 6  FAT16           42  SFS             87  NTFS volume set db  CP/M / CTOS / .
    
35. 7  HPFS/NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility
    
36. 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM       df  BootIt
    
37. 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access
    
38. a  OS/2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R/O
    
39. b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD/OS          e4  SpeedStor
    
40. c  W95 FAT32 (LBA) 52  CP/M            a0  IBM Thinkpad hi eb  BeOS fs
    
41. e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT
    
42. f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12/16/
    
43. 10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux/PA-RISC b
    
44. 11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor
    
45. 12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor
    
46. 14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary
    
47. 16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      fb  VMware VMFS
    
48. 17  Hidden HPFS/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE
    
49. 18  AST SmartSleep  65  Novell Netware  b8  BSDI swap       fd  Linux raid auto
    
50. 1b  Hidden W95 FAT3 70  DiskSecure Mult bb  Boot Wizard hid fe  LANstep
    
51. 1c  Hidden W95 FAT3 75  PC/IX           be  Solaris boot    ff  BBT
    
52. 1e  Hidden W95 FAT1 80  Old Minix
    
53. 
    
54. Command (m for help): q
    
55. 
    
56. [root@server3 labs]# fdisk /dev/sda <<EOF
    
57. > L
    
58. > q
    
59. > EOF
    
60. Welcome to fdisk (util-linux 2.23.2).
    
61. 
    
62. Changes will remain in memory only, until you decide to write them.
    
63. Be careful before using the write command.
    
64. 
    
65. 
    
66. Command (m for help):
    
67. 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris
    
68. 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS/sec (FAT-
    
69. 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS/sec (FAT-
    
70. 3  XENIX usr       3c  PartitionMagic  84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
    
71. 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx
    
72. 5  Extended        41  PPC PReP Boot   86  NTFS volume set da  Non-FS data
    
73. 6  FAT16           42  SFS             87  NTFS volume set db  CP/M / CTOS / .
    
74. 7  HPFS/NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility
    
75. 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM       df  BootIt
    
76. 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access
    
77. a  OS/2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R/O
    
78. b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD/OS          e4  SpeedStor
    
79. c  W95 FAT32 (LBA) 52  CP/M            a0  IBM Thinkpad hi eb  BeOS fs
    
80. e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT
    
81. f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12/16/
    
82. 10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux/PA-RISC b
    
83. 11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor
    
84. 12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor
    
85. 14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary
    
86. 16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      fb  VMware VMFS
    
87. 17  Hidden HPFS/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE
    
88. 18  AST SmartSleep  65  Novell Netware  b8  BSDI swap       fd  Linux raid auto
    
89. 1b  Hidden W95 FAT3 70  DiskSecure Mult bb  Boot Wizard hid fe  LANstep
    
90. 1c  Hidden W95 FAT3 75  PC/IX           be  Solaris boot    ff  BBT
    
91. 1e  Hidden W95 FAT1 80  Old Minix
    
92. 
    
93. Command (m for help):
    
94. [root@server3 labs]#
    

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关于多行标准输入的shell编程方法：

1. #!/bin/sh
   
2. 
   
3.       fdisk /dev/sda <<-EOF
   
4.      L
   
5.       q
   
6.       EOF
   
7. 
   

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--------------------------------------

1. #!/bin/sh
   
2. 
   
3. read -p "Pls input a number: "  V1
   
4. 
   
5. if [ $V1 -lt 10 ]
   
6. then
   
7. V2=$[ $V1 * 8 ]
   
8. else
   
9. V2=$[ $V1 * 4 ]
   
10. fi
    
11. 
    
12. echo $V2
    
13. echo $V2 >/tmp/RH124-4-11.tmp
    
14. 
    

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