Bash Command Line and Shell Scripts Pocket Primer

Name: Bash Command Line and Shell Scripts Pocket Primer
Author: Oswald Campesato
ISBN: 9781683925040

by Oswald Campesato

an item in the Pocket Primer Series

Paperback

Bash Command Line and Shell Scripts Pocket Primer

by Oswald Campesato

an item in the Pocket Primer Series

Paperback

Overview

No detailed description available for "Bash Command Line and Shell Scripts Pocket Primer".

FormatPaperback

LanguageEnglish

PublisherMercury Learning & Information

Publication DateJun. 2nd, 2020

ISBN-139781683925040

ISBN-101683925041

Shipping Weight0.86 lbs

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Professional Reviews

"Oswald Campesato's BASH Command Lineand Shell Scripts Pocket Primer joins others in the 'Pocket Primer' series, covering the basics ofcommand-line utilities that can produce effective shell scripts. Programmersrelatively new to this concept as well as those seeking a refresher course willfind this introduction to shell scripts key to contrasting approaches to dataanalysis and shell-based problem-solving."

Preface	p. xv
Introduction	p. 1
What is Unix?	p. 2
Available Shell Types	p. 2
What is bash?	p. 3
Getting help for bash Commands	p. 4
Navigating Around Directories	p. 4
The history Command	p. 4
Listing Filenames with the Is Command	p. 5
Displaying Contents of Files	p. 8
The cat Command	p. 8
The head and tail Commands	p. 9
The Pipe Symbol	p. 10
The fold Command	p. 11
File Ownership: Owner, Group, and World	p. 11
Hidden Files	p. 12
Handling Problematic Filenames	p. 13
Working with Environment Variables	p. 13
The env Command	p. 13
Useful Environment Variables	p. 14
Setting the PATH Environment Variable	p. 14
Specifying Aliases and Environment Variables	p. 15
Finding Executable Files	p. 16
The printf Command and the echo Command	p. 17
The cut Command	p. 17
The echo Command and Whitespaces	p. 18
Command Substitution ("backtick")	p. 20
The pipe" Symbol and Multiple Commands	p. 20
Using a Semicolon to Separate Commands	p. 21
The paste Command	p. 22
Inserting Blank Lines with the paste Command	p. 22
A Simple Use Case with the paste Command	p. 23
A Simple Use Case with cut and paste Commands	p. 24
What about zsh?	p. 25
Switching between bash and zsh	p. 26
Configuring zsh	p. 26
Summary	p. 26
Files and Directories	p. 29
Create, Copy, Remove, and Move Files	p. 29
Creating Text Files	p. 29
Copying Files	p. 30
Copy Files with Command Substitution	p. 30
Deleting Files	p. 31
Moving Files	p. 32
The In Command	p. 32
The basename, dirname, and file Commands	p. 33
The wc Command	p. 33
The cat Command	p. 34
The more Command and the less Command	p. 34
The head Command	p. 35
The tail Command	p. 36
Comparing File Contents	p. 38
The Parts of a Filename	p. 38
Working with File Permissions	p. 39
The chmod Command	p. 40
Changing owner, permissions, and groups	p. 40
The umask and ulimit Commands	p. 41
Working with Directories	p. 41
Absolute and Relative Directories	p. 41
Absolute/Relative Pathnames	p. 41
Creating Directories	p. 42
Removing Directories	p. 43
Navigating to Directories	p. 43
Moving Directories	p. 44
Using Quote Characters	p. 44
Streams and Redirection Commands	p. 45
Working with Metacharacters	p. 46
Working with Character Classes	p. 47
Metacharacters and Character Classes	p. 48
Digits and Characters	p. 48
Working with "^" and "\" and "!"	p. 49
Filenames and Metacharacters	p. 49
Summary	p. 50
Useful Commands	p. 51
The join Command	p. 52
The fold Command	p. 52
The split Command	p. 53
The sort Command	p. 53
The uniq Command	p. 56
How to Compare Files	p. 56
The od Command	p. 57
The tr Command	p. 57
A Simple Use Case	p. 60
The find Command	p. 61
The tee Command	p. 62
File Compression Commands	p. 63
The tar command	p. 63
The cpio Command	p. 63
The gzip and gunzip Commands	p. 64
The bunzip2 Command	p. 64
The zip Command	p. 65
Commands for zip Files and bz Files	p. 65
Internal Field Separator (IFS)	p. 65
Data From a Range of Columns in a Dataset	p. 66
Working with Uneven Rows in Datasets	p. 68
Summary	p. 68
Conditional Logic and Loops	p. 71
Quick Overview of Operators in bash	p. 71
Arithmetic Operations and Operators	p. 72
The expr Command	p. 72
Arithmetic Operators	p. 73
Boolean and Numeric Operators	p. 73
Compound Operators and Numeric Operators	p. 74
Working with Variables	p. 74
Assigning Values to Variables	p. 75
The read Command for User Input	p. 76
Boolean Operators and String Operators	p. 76
Compound Operators and String Operators	p. 77
File Test Operators	p. 78
Compound Operators and File Operators	p. 79
Conditional Logic with if /else/fi Statements	p. 80
The case/esac Statement	p. 81
Working with Strings in Shell Scripts	p. 84
Working with Loops	p. 85
Using a for loop	p. 85
Checking Files in a Directory	p. 86
Working with Nested Loops	p. 87
Using a while Loop	p. 89
The while, case, and if/elif/else/fi Statements	p. 91
Using an until Loop	p. 92
User-defined Functions	p. 92
Creating a Simple Menu from Shell Commands	p. 94
Arrays in bash	p. 96
Working with Arrays	p. 98
Summary	p. 102
Filtering Data with grep	p. 103
What is the grep Command?	p. 104
Metacharacters and the grep Command	p. 105
Escaping Metacharacters with the grep Command	p. 105
Useful Options for the grep Command	p. 106
Character Classes and the grep Command	p. 110
Working with the -c Option in grep	p. 111
Matching a Range of Lines	p. 112
Using Back References in the grep Command	p. 114
Finding Empty lines in Datasets	p. 116
Using Keys to Search Datasets	p. 116
The Backslash Character and the grep Command	p. 117
Multiple Matches in the grep Command	p. 117
The grep Command and the xargs Command	p. 118
Searching zip Files for a String	p. 119
Checking for a Unique Key Value	p. 120
Redirecting Error Messages	p. 121
The egrep Command and fgrep Command	p. 121
Displaying "Pure" Words in a Dataset with egrep	p. 121
The fgrep Command	p. 123
A Simple Use Case	p. 123
Summary	p. 125
Transforming Data with sed	p. 127
What is the sed Command?	p. 127
The sed Execution Cycle	p. 128
Matching String Patterns Using sed	p. 128
Substituting String Patterns Using sed	p. 129
Replacing Vowels from a String or a File	p. 130
Deleting Multiple Digits and Letters from a String	p. 131
Search and Replace with sed	p. 131
Datasets with Multiple Delimiters	p. 133
Useful Switches in sed	p. 134
Working with Datasets	p. 135
Printing Lines	p. 135
Character Classes and sed	p. 136
Removing Control Characters	p. 137
Counting Words in a Dataset	p. 137
Back References in sed	p. 138
Displaying Only "Pure" Words in a Dataset	p. 139
One Line sed Commands	p. 140
Summary	p. 147
Working with awk	p. 149
The awk Command	p. 150
Built-in Variables That Control awk	p. 150
How Does the awk Command Work?	p. 151
Aligning Text with the printf Command	p. 152
Conditional Logic and Control Statements	p. 152
The while Statement	p. 153
A for loop in awk	p. 154
A for loop with a break Statement	p. 154
The next and continue Statements	p. 155
Deleting Alternate Lines in Datasets	p. 155
Merging Lines in Datasets	p. 156
Printing File Contents as a Single Line	p. 156
Joining Groups of Lines in a Text File	p. 157
Joining Alternate Lines in a Text File	p. 158
Matching with Metacharacters and Character Sets	p. 159
Printing Lines Using Conditional Logic	p. 160
Splitting Filenames with awk	p. 161
Working with Postfix Arithmetic Operators	p. 161
Numeric Functions in awk	p. 162
One Line awk Commands	p. 165
Useful Short awk Scripts	p. 166
Printing the Words in a Text String in awk	p. 167
Count Occurrences of a String in Specific Rows	p. 167
Printing a String in a Fixed Number of Columns	p. 169
Printing a Dataset in a Fixed Number of Columns	p. 169
Aligning Columns in Datasets	p. 170
Aligning Columns and Multiple Rows in Datasets	p. 171
Removing a Column from a Text File	p. 173
Subsets of Columns Aligned Rows in Datasets	p. 173
Counting Word Frequency in Datasets	p. 175
Displaying Only "Pure" Words in a Dataset	p. 176
Working with Multiline Records in awk	p. 178
A Simple Use Case	p. 179
Another Use Case	p. 181
Summary	p. 183
Intro to Shell Scripts	p. 185
What are Shell Scripts?	p. 186
A Simple Shell Script	p. 186
Setting Environment Variables via Shell Scripts	p. 187
Sourcing or "Dotting" a Shell Script	p. 188
Working with Functions in Shell Scripts	p. 189
Passing values to Functions in a Shell Script (1)	p. 190
Passing values to Functions in a Shell Script (2)	p. 191
Iterate through values passed to a Function	p. 192
Positional Parameters in User-defined Functions	p. 196
Shell Scripts, Functions, and User Input	p. 198
Recursion and Shell Scripts	p. 199
Iterative Solutions for Factorial Values	p. 200
Calculating Fibonacci Numbers	p. 203
Calculating the GCD of Two Positive Integers	p. 204
Calculating the LCM of two Positive Integers	p. 205
Calculating Prime Divisors	p. 207
Summary	p. 208
Shell Scripts with grep and awk Command	p. 209
The grep Command with zip Files	p. 209
The grep Command with Multiple Files	p. 212
Simulating Relational Data with the grep Command	p. 216
Checking Updates in a Logfile	p. 218
Processing Multiline Records	p. 220
Adding the Contents of Records	p. 221
Using the split Function in awk	p. 221
Scanning Diagonal Elements in Datasets	p. 222
Adding Values From Multiple Datasets (1)	p. 225
Adding Values From Multiple Datasets (2)	p. 226
Adding Values From Multiple Datasets (3)	p. 228
Calculating Combinations of Field Values	p. 229
Summary	p. 230
Miscellaneous Shell Scripts	p. 231
Ushig rm and mv with Directories	p. 231
Using the find Command with Directories	p. 233
Creating a Directory of Directories	p. 233
Cloning a set of Sub-directories	p. 234
Executing Files in Multiple Directories	p. 238
The case/esac Command	p. 239
Compressing/uncompressing Files	p. 241
The dd Command	p. 241
The crontab Command	p. 242
Uncompressing Files as a cron Job	p. 243
Scheduled Commands and Background Processes	p. 244
How to Schedule Tasks	p. 244
The nohup Command	p. 244
Executing Commands Remotely	p. 244
How to Schedule Tasks in the Background	p. 245
How to Terminate Processes	p. 245
Terminating Multiple Processes	p. 245
Process-Related Commands	p. 246
How to Monitor Processes	p. 246
Checking Execution Results	p. 247
System Messages and Log Files	p. 249
Disk Usage Commands	p. 250
Trapping and Ignoring Signals	p. 250
Arithmetic with the bc and dc Commands	p. 251
Working with the date Command	p. 252
Print-related Commands	p. 255
Creating a Report with the print f () Command	p. 255
Checking Updates hi a Logfile	p. 256
Listing Active Users on a Machine	p. 258
Miscellaneous Commands	p. 259
Summary	p. 261
Index	p. 263
Table of Contents provided by Ingram. All Rights Reserved.

Find at your local library from our friends at WorldCat	Find Libraries

Overview

No detailed description available for "Bash Command Line and Shell Scripts Pocket Primer".

Product Details

FormatPaperback

LanguageEnglish

PublisherMercury Learning & Information

Publication DateJun. 2nd, 2020

ISBN-139781683925040

ISBN-101683925041

Shipping Weight0.86 lbs

Professional Reviews

Preface	p. xv
Introduction	p. 1
What is Unix?	p. 2
Available Shell Types	p. 2
What is bash?	p. 3
Getting help for bash Commands	p. 4
Navigating Around Directories	p. 4
The history Command	p. 4
Listing Filenames with the Is Command	p. 5
Displaying Contents of Files	p. 8
The cat Command	p. 8
The head and tail Commands	p. 9
The Pipe Symbol	p. 10
The fold Command	p. 11
File Ownership: Owner, Group, and World	p. 11
Hidden Files	p. 12
Handling Problematic Filenames	p. 13
Working with Environment Variables	p. 13
The env Command	p. 13
Useful Environment Variables	p. 14
Setting the PATH Environment Variable	p. 14
Specifying Aliases and Environment Variables	p. 15
Finding Executable Files	p. 16
The printf Command and the echo Command	p. 17
The cut Command	p. 17
The echo Command and Whitespaces	p. 18
Command Substitution ("backtick")	p. 20
The pipe" Symbol and Multiple Commands	p. 20
Using a Semicolon to Separate Commands	p. 21
The paste Command	p. 22
Inserting Blank Lines with the paste Command	p. 22
A Simple Use Case with the paste Command	p. 23
A Simple Use Case with cut and paste Commands	p. 24
What about zsh?	p. 25
Switching between bash and zsh	p. 26
Configuring zsh	p. 26
Summary	p. 26
Files and Directories	p. 29
Create, Copy, Remove, and Move Files	p. 29
Creating Text Files	p. 29
Copying Files	p. 30
Copy Files with Command Substitution	p. 30
Deleting Files	p. 31
Moving Files	p. 32
The In Command	p. 32
The basename, dirname, and file Commands	p. 33
The wc Command	p. 33
The cat Command	p. 34
The more Command and the less Command	p. 34
The head Command	p. 35
The tail Command	p. 36
Comparing File Contents	p. 38
The Parts of a Filename	p. 38
Working with File Permissions	p. 39
The chmod Command	p. 40
Changing owner, permissions, and groups	p. 40
The umask and ulimit Commands	p. 41
Working with Directories	p. 41
Absolute and Relative Directories	p. 41
Absolute/Relative Pathnames	p. 41
Creating Directories	p. 42
Removing Directories	p. 43
Navigating to Directories	p. 43
Moving Directories	p. 44
Using Quote Characters	p. 44
Streams and Redirection Commands	p. 45
Working with Metacharacters	p. 46
Working with Character Classes	p. 47
Metacharacters and Character Classes	p. 48
Digits and Characters	p. 48
Working with "^" and "\" and "!"	p. 49
Filenames and Metacharacters	p. 49
Summary	p. 50
Useful Commands	p. 51
The join Command	p. 52
The fold Command	p. 52
The split Command	p. 53
The sort Command	p. 53
The uniq Command	p. 56
How to Compare Files	p. 56
The od Command	p. 57
The tr Command	p. 57
A Simple Use Case	p. 60
The find Command	p. 61
The tee Command	p. 62
File Compression Commands	p. 63
The tar command	p. 63
The cpio Command	p. 63
The gzip and gunzip Commands	p. 64
The bunzip2 Command	p. 64
The zip Command	p. 65
Commands for zip Files and bz Files	p. 65
Internal Field Separator (IFS)	p. 65
Data From a Range of Columns in a Dataset	p. 66
Working with Uneven Rows in Datasets	p. 68
Summary	p. 68
Conditional Logic and Loops	p. 71
Quick Overview of Operators in bash	p. 71
Arithmetic Operations and Operators	p. 72
The expr Command	p. 72
Arithmetic Operators	p. 73
Boolean and Numeric Operators	p. 73
Compound Operators and Numeric Operators	p. 74
Working with Variables	p. 74
Assigning Values to Variables	p. 75
The read Command for User Input	p. 76
Boolean Operators and String Operators	p. 76
Compound Operators and String Operators	p. 77
File Test Operators	p. 78
Compound Operators and File Operators	p. 79
Conditional Logic with if /else/fi Statements	p. 80
The case/esac Statement	p. 81
Working with Strings in Shell Scripts	p. 84
Working with Loops	p. 85
Using a for loop	p. 85
Checking Files in a Directory	p. 86
Working with Nested Loops	p. 87
Using a while Loop	p. 89
The while, case, and if/elif/else/fi Statements	p. 91
Using an until Loop	p. 92
User-defined Functions	p. 92
Creating a Simple Menu from Shell Commands	p. 94
Arrays in bash	p. 96
Working with Arrays	p. 98
Summary	p. 102
Filtering Data with grep	p. 103
What is the grep Command?	p. 104
Metacharacters and the grep Command	p. 105
Escaping Metacharacters with the grep Command	p. 105
Useful Options for the grep Command	p. 106
Character Classes and the grep Command	p. 110
Working with the -c Option in grep	p. 111
Matching a Range of Lines	p. 112
Using Back References in the grep Command	p. 114
Finding Empty lines in Datasets	p. 116
Using Keys to Search Datasets	p. 116
The Backslash Character and the grep Command	p. 117
Multiple Matches in the grep Command	p. 117
The grep Command and the xargs Command	p. 118
Searching zip Files for a String	p. 119
Checking for a Unique Key Value	p. 120
Redirecting Error Messages	p. 121
The egrep Command and fgrep Command	p. 121
Displaying "Pure" Words in a Dataset with egrep	p. 121
The fgrep Command	p. 123
A Simple Use Case	p. 123
Summary	p. 125
Transforming Data with sed	p. 127
What is the sed Command?	p. 127
The sed Execution Cycle	p. 128
Matching String Patterns Using sed	p. 128
Substituting String Patterns Using sed	p. 129
Replacing Vowels from a String or a File	p. 130
Deleting Multiple Digits and Letters from a String	p. 131
Search and Replace with sed	p. 131
Datasets with Multiple Delimiters	p. 133
Useful Switches in sed	p. 134
Working with Datasets	p. 135
Printing Lines	p. 135
Character Classes and sed	p. 136
Removing Control Characters	p. 137
Counting Words in a Dataset	p. 137
Back References in sed	p. 138
Displaying Only "Pure" Words in a Dataset	p. 139
One Line sed Commands	p. 140
Summary	p. 147
Working with awk	p. 149
The awk Command	p. 150
Built-in Variables That Control awk	p. 150
How Does the awk Command Work?	p. 151
Aligning Text with the printf Command	p. 152
Conditional Logic and Control Statements	p. 152
The while Statement	p. 153
A for loop in awk	p. 154
A for loop with a break Statement	p. 154
The next and continue Statements	p. 155
Deleting Alternate Lines in Datasets	p. 155
Merging Lines in Datasets	p. 156
Printing File Contents as a Single Line	p. 156
Joining Groups of Lines in a Text File	p. 157
Joining Alternate Lines in a Text File	p. 158
Matching with Metacharacters and Character Sets	p. 159
Printing Lines Using Conditional Logic	p. 160
Splitting Filenames with awk	p. 161
Working with Postfix Arithmetic Operators	p. 161
Numeric Functions in awk	p. 162
One Line awk Commands	p. 165
Useful Short awk Scripts	p. 166
Printing the Words in a Text String in awk	p. 167
Count Occurrences of a String in Specific Rows	p. 167
Printing a String in a Fixed Number of Columns	p. 169
Printing a Dataset in a Fixed Number of Columns	p. 169
Aligning Columns in Datasets	p. 170
Aligning Columns and Multiple Rows in Datasets	p. 171
Removing a Column from a Text File	p. 173
Subsets of Columns Aligned Rows in Datasets	p. 173
Counting Word Frequency in Datasets	p. 175
Displaying Only "Pure" Words in a Dataset	p. 176
Working with Multiline Records in awk	p. 178
A Simple Use Case	p. 179
Another Use Case	p. 181
Summary	p. 183
Intro to Shell Scripts	p. 185
What are Shell Scripts?	p. 186
A Simple Shell Script	p. 186
Setting Environment Variables via Shell Scripts	p. 187
Sourcing or "Dotting" a Shell Script	p. 188
Working with Functions in Shell Scripts	p. 189
Passing values to Functions in a Shell Script (1)	p. 190
Passing values to Functions in a Shell Script (2)	p. 191
Iterate through values passed to a Function	p. 192
Positional Parameters in User-defined Functions	p. 196
Shell Scripts, Functions, and User Input	p. 198
Recursion and Shell Scripts	p. 199
Iterative Solutions for Factorial Values	p. 200
Calculating Fibonacci Numbers	p. 203
Calculating the GCD of Two Positive Integers	p. 204
Calculating the LCM of two Positive Integers	p. 205
Calculating Prime Divisors	p. 207
Summary	p. 208
Shell Scripts with grep and awk Command	p. 209
The grep Command with zip Files	p. 209
The grep Command with Multiple Files	p. 212
Simulating Relational Data with the grep Command	p. 216
Checking Updates in a Logfile	p. 218
Processing Multiline Records	p. 220
Adding the Contents of Records	p. 221
Using the split Function in awk	p. 221
Scanning Diagonal Elements in Datasets	p. 222
Adding Values From Multiple Datasets (1)	p. 225
Adding Values From Multiple Datasets (2)	p. 226
Adding Values From Multiple Datasets (3)	p. 228
Calculating Combinations of Field Values	p. 229
Summary	p. 230
Miscellaneous Shell Scripts	p. 231
Ushig rm and mv with Directories	p. 231
Using the find Command with Directories	p. 233
Creating a Directory of Directories	p. 233
Cloning a set of Sub-directories	p. 234
Executing Files in Multiple Directories	p. 238
The case/esac Command	p. 239
Compressing/uncompressing Files	p. 241
The dd Command	p. 241
The crontab Command	p. 242
Uncompressing Files as a cron Job	p. 243
Scheduled Commands and Background Processes	p. 244
How to Schedule Tasks	p. 244
The nohup Command	p. 244
Executing Commands Remotely	p. 244
How to Schedule Tasks in the Background	p. 245
How to Terminate Processes	p. 245
Terminating Multiple Processes	p. 245
Process-Related Commands	p. 246
How to Monitor Processes	p. 246
Checking Execution Results	p. 247
System Messages and Log Files	p. 249
Disk Usage Commands	p. 250
Trapping and Ignoring Signals	p. 250
Arithmetic with the bc and dc Commands	p. 251
Working with the date Command	p. 252
Print-related Commands	p. 255
Creating a Report with the print f () Command	p. 255
Checking Updates hi a Logfile	p. 256
Listing Active Users on a Machine	p. 258
Miscellaneous Commands	p. 259
Summary	p. 261
Index	p. 263
Table of Contents provided by Ingram. All Rights Reserved.

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