This is done using asuserdata (which is not symlinked). One of the easiest ways to find out a good portion of the command for setting (and getting) is to review the nf spec. In addition to stating what is set by explicit values in the configuration the asconfigurator will also note default values that apply in lieu a set value. Since the goal of the tool is to safely parse the nf the asconfigurator makes a great tool for not only setting but also getting data. In this way, it acts like a "modify" operator. The -x option will just change the option specified and it will leave the other setting unchanged. With -Fand -f the commands replace every option in the section specified with the new options passed in the command string. This option is like -f in terms of verbosity but it treats the command string differently. In addition to the -F and -f flags there is a -x. In all 3 instances above asconfigurator takes in a cmd_string argument. With this instantiation, an already existing nf can be used as the basis for a new one.Īsconfigurator -F "cmd_string" nf new.conf In the third and last form the two file arguments pass in a template and new nf. If the file exists it assumes it is another nfĪsconfigurator -F "cmd_string" nf When tried with set_user_data commands a Segmentation Fault occurs. If the file does not exist it creates a fresh configuration although it should be noted this only works for set_node_data set_server_data and other non-filtered commands (discussed below). In the second form the additional argument is a new or alternate configuration file. A -f is similar, but it suppresses the response to STDOUT The -F means to print out to STDOUT the response from the command. This mode of asconfigurator takes in a command and edits or reads from the default nf (typically /opt/aspera/etc/nf on Linux). For the purpose of this document, asconfigurator commands will be passed in from the CLI rather than STDIN. There are multiple ways to run asconfigurator, but the basic two modes are from STDIN and from a command string passed in as an argument. asconfigurator parses validates and writes well-formed XML properly nested and to spec. Once the basics of asconfigurator are understood, it is easy to quickly and safely edit the nf with one or two commands. # such as: 404 Not Found, 401 Unauthorized, etc.Instead of manually editing the nf or implementing their own XML parsers, most Aspera tools use asconfigurator. # curl returned 22, indicating some error above 400, To find out what grep returned, $? is of no use. What you get is the result of the tee command, which writes the results to the display as well as to the /tmp/hosts-results.txt file. # not the status of the "grep" command :-( # Ah - what we get here is the status of the "tee" command, Grep /etc/hosts 2>&1 | tee /tmp/hosts-results.txt What gets difficult is when you execute a pipeline: (see pipelines for more information on the Unix Pipeline) #!/bin/bash # The grep command failed to find "" in /etc/hosts fileĮcho "I don't know the IP address of " You can do this with the $? variable, as is widely known: #!/bin/bash It's a pretty common thing in a shell script to want to check the exit status of the previous command.
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