what is gsub in shell script?
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The gsub() function returns the number of substitutions made. If the variable to search and alter ( target ) is omitted, then the entire input record ( $0 ) is used. ... If string is a number, the length of the digit string representing that number is returned.
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['grep -R # recursive.', 'grep -l # file names only.', 'if [ ! -h "file" ] # bash if not a symbolic link.']
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gsub! is a String class method in Ruby which is used to return a copy of the given string with all occurrences of pattern substituted for the second argument. If no substitutions were performed, then it will return nil. If no block and no replacement is given, an enumerator is returned instead.
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["For tar. gz. To unpack a tar.gz file, you can use the tar command from the shell. Here's an example: tar -xzf rebol.tar.gz. ... ", 'For just . gz (. gzip) ... ', 'To run it: To run the executable file, CD to that directory, and type: ./rebol. (Or whatever the file name happens to be.)']
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['Press Alt + F2 to get a run dialogue and in that type gksu nautilus . This will open up a file browser window running as root. ... ', 'A much more direct method is just loading up a terminal and writing: sudo cp -R /path/to/files/you/want/copied/ /copy/to/this/path/']
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gSOAP. gSOAP is a C and C++ software development toolkit for SOAP/XML web services and generic XML data bindings. Given a set of C/C++ type declarations, the compiler-based gSOAP tools generate serialization routines in source code for efficient XML serialization of the specified C and C++ data structures.
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$1 is the first command-line argument passed to the shell script. Also, know as Positional parameters. ... $0 is the name of the script itself (script.sh) $1 is the first argument (filename1) $2 is the second argument (dir1)
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['Bash – ~/. bashrc.', 'ZSH – ~/. zshrc.', 'Fish – ~/. config/fish/config. fish.']
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['Open Terminal by selecting Go > Utilities > Terminal.', 'Type: sftp <HSU UserName>@users.humboldt.edu <replacing HSU UserName with your HSU User Name> and hit Enter.', 'Enter the password associated with your HSU User Name.']
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This manual page documents briefly gksu and gksudo gksu is a frontend to su and gksudo is a frontend to sudo. Their primary purpose is to run graphical commands that need root without the need to run an X terminal emulator and using su directly. Notice that all the magic is done by the underlying library, libgksu.
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One can check if a directory exists in a Linux shell script using the following syntax: [ -d "/path/dir/" ] && echo "Directory /path/dir/ exists."
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$1 is the first command-line argument passed to the shell script. ... $0 is the name of the script itself (script.sh) $1 is the first argument (filename1) $2 is the second argument (dir1)
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Shell programming with bash: by example, by counter-example. As an interactive shell, bash is a terse language for initiating and directing computations. As a scripting language, bash is a domain-specific language for manipulating and composing processes and files. Bash is baroque.
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string.gsub (s, pattern, repl [, n]) Returns a copy of s in which all (or the first n , if given) occurrences of the pattern have been replaced by a replacement string specified by repl , which can be a string, a table, or a function. gsub also returns, as its second value, the total number of matches that occurred.
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GDScript looks like python, but is designed to work only with Nodes. Scripts are attached to nodes, and don't have their own object data.
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#!/bin/sh echo "Please enter input file name." read input_variable echo "You entered: $input_variable" echo "Please enter a name of the new output file." touch output_file read $output_file echo "The output file name is going to be ${output_file}" echo "Processing data extraction..." ; cat $input_variable | awk -F": " ...
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Details. gsubfn is an R package used for string matching, substitution and parsing. A seemingly small generalization of gsub, namely allow the replacement string to be a replacement function, list, formula or proto object, can result in significantly increased power and applicability.