Hp NonStop G-Series Manuel d'utilisateur Page 32
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Table 1 Selected OSS Shell Features (continued)
DescriptionFeature
A feature that allows user-assigned values to be passed to the shell and to variables
in the command line.
Parameter substitution
A feature that allows you to use a command’s output as if it was the value of a
variable.
Command substitution
Mechanisms for trapping interruptions and other OSS signals.Signal trapping
A feature that allows values, attributes, and comparisons to be tested.Conditional expressions
A feature that allows you to run, monitor, and manage foreground and background
processes.
Job control
The ability to group data and call it by a name.Arrays
Metacharacters
Table 2 lists shell metacharacters (characters that have special meaning to the shell).
Table 2 Shell Metacharacters
DescriptionMetacharacter
Syntactic
Separates commands that are part of a pipeline.|
Runs the next command if the current command succeeds.&&
Runs the next command if the current command fails.||
Separates commands that should be executed sequentially.;
Separates elements of a case construct.;;
Runs commands in the background.&
Groups commands to run as a separate process in a subshell.( )
Groups commands without creating a subshell.{ }
Filename
Separates the parts of a file’s pathname./
Matches any single character except a leading dot.?
Matches any sequence of characters except a leading dot.*
Matches any of the enclosed characters.[ ]
Specifies a home directory when used at the beginning of a filename.~
Quotation
Specifies that the following character should be interpreted literally; that is, without its
special meaning to the shell.
\
Specifies that any of the enclosed characters (except for the single-quotation-mark
character) should be interpreted literally; that is, without their special meaning to the
shell.
'...'
Specifies that the $ (dollar sign), ` (grave accent), and \ (backslash) characters keep
their special meaning to the shell, while all other enclosed characters should be
interpreted literally to the shell; that is, without their special meaning to the shell.
"..."
Input/Output
Redirects input.<
32 The OSS Shell
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- 8 Contents 8
- Contents 9 9
- Examples 10
- About This Document 11
- Acknowledgment 12
- Document Organization 13
- Notation Conventions 14
- Notation Conventions 15 15
- Notation for Messages 16
- Related Information 17
- HP Encourages Your Comments 19
- Publishing History 19
- OSS Components 21
- OSS and UNIX 22
- Interoperability 23
- Application Development 23
- OSS Environment 24
- OSS Device Support 24
- OSS Processes 24
- 2 The OSS File System 26
- The OSS File-System Structure 27
- OSS Pathnames 28
- Relative Pathnames 29
- Pathname Length 29
- OSS Filesets 30
- 3 The OSS Shell 31
- Metacharacters 32
- Shell Built-In Commands 33
- /bin/command_name 34
- Command-Entry Aids 35
- Using Pipes and Filters 36
- Grouping Commands 37
- Filename Completion 38
- Aliases 39 39
- Command History 40
- Command-Line Editing 41
- 42 The OSS Shell 42
- The Shell Environment 43
- Environment Variables 45
- Setting Environment Variables 46
- Environment Variables 47 47
- Example .profile File 48
- How the Shell Finds Commands 50
- Shell Procedures 51
- 4 OSS Commands and Utilities 53
- The man Command 54
- The whatis Command 54
- The apropos Command 54
- Command Syntax 55
- Archiving 61
- Displaying Files 61
- Files and Directories 61
- Printing and Formatting 63
- Process Management 63
- Remote Access 64
- Security and Permissions 64
- File Formatting Commands 67
- Two Different File Systems 68
- The /G Directory 69
- The /E Directory 69
- Guardian File Types 70
- Pathname Mapping 72
- Editing Files 74
- Printing and Spooler Commands 75
- Guardian DEFINEs 77
- 6 Running the OSS Shell 85
- The osh Command 86
- Exiting OSS 87
- Managing the OSS Environment 88
- Disk Volume Management 89
- Security 89
- 7 Creating Files 90
- Working With Files 91 91
- 92 Creating Files 92
- 8 Managing Files 93
- The more Command 96
- The cat Command 96
- Printing Files 98
- Copying Files (cp) 100
- Copying Files (cp) 101 101
- Copying an Entire Directory 102
- Renaming Files 103
- Comparing Files (diff) 104
- Sorting File Contents (sort) 105
- Removing Files (rm) 106
- Removing a Single File 107
- Removing Multiple Files 107
- Linking Files (ln) 108
- Using Links 109
- Removing Links 110
- Determining File Type (file) 111
- 112 Managing Files 112
- 9 Managing Directories 113
- Changing Directories (cd) 114
- 116 Managing Directories 116
- Copying Directories (cp) 117
- Renaming Directories (mv) 117
- Removing Directories (rmdir) 118
- Removing Multiple Directories 119
- 120 Managing Directories 120
- Understanding Permissions 121
- Default Permissions 123
- Changing File Permissions 125
- Setting Absolute Permissions 126
- $ chmod a=rw file3 127
- $ ls -l file3 127
- Setting the User Mask 128
- $ umask 037 129
- Changing Owners and Groups 130
- • Safeguard User’s Guide 134
- • Security Management Guide 134
- 11 Managing Processes 135
- Running Foreground Processes 138
- Running Background Processes 138
- Checking Process Status 139
- 140 Managing Processes 140
- The jobs Command 141
- 142 Managing Processes 142
- Scheduling Jobs 143
- 144 Managing Processes 144
- Scheduling Jobs 145 145
- 146 Managing Processes 146
- Using the -i Flag 148
- Finding Files (find) 149
- The pax Utility 151
- $ mkdir newdir 152
- $ pax -rw olddir newdir 152
- $ pax -wv -f /G/tape -b 10b 152
- The ftp Utility 153
- A The vi Editor 155
- 156 The vi Editor 156
- Create a Sample Edit File 157
- Opening a File 157
- Moving Within the File 158
- Entering New Text 158
- Editing Text 159
- Using Advanced Techniques 160
- Searching for Strings 161
- Moving Text 161
- Copying Text 161
- Other vi Features 162
- Making Substitutions 162
- Deleting a Block of Text 164
- Customizing Your Environment 164
- Saving Your Customizations 164
- B The ed Editor 166
- Saving Part of a File 168
- Using the ed (Edit) Command 169
- Using the e (Edit) Subcommand 169
- Using the r (Read) Subcommand 169
- 170 The ed Editor 170
- Finding Text 172
- Removing Characters 174
- Using a Context Search 175
- Deleting the Current Line 176
- Deleting a Specific Line 176
- Deleting Multiple Lines 176
- Changing a Single Line 177
- Changing Multiple Lines 178
- Using Line Numbers 178
- Using System Commands from ed 180
- Ending the ed Program 180
- Finding Product Files 181
- Running vproc 181
- Interpreting vproc Output 182
- Recovery 184
- No action is required 184
- Glossary 191
- 192 Glossary 192
- 194 Glossary 194
- 196 Glossary 196
- 198 Glossary 198
- 200 Glossary 200
- 202 Glossary 202
- 204 Glossary 204
- 206 Index 206
- 208 Index 208
- 210 Index 210
- 212 Index 212
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