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Top Forums Shell Programming and Scripting Running options in bash script Post 303011053 by Cody Learner on Friday 12th of January 2018 12:21:33 PM
Old 01-12-2018
Thanks for replies.

Second time someone asked why not using getopts. I have not looked into it so far, although I probably should.

With manually parsing options, I consider each argument as an operation rather than an option. No real option ability...

When the program is called with no operations, or a non existent op, they get this or in the former, without the error message.:

Code:
$ aurt -qR

  Input Error: Please try again or see    aurt --help

 |=====================================================================================|
 |    Aurt, a tiny AUR helper script.         USAGE:  $ aurt [operation] [package]     |
 |-------------------------------------------------------------------------------------|
 | -S  Install Update                -F  Files Provided By Pkg          NOTES:         |
 | -Sv Update By Version             -s  Search For Pkg                                |
 | -Sf Force Install Update          -p  Pacman Log                                    |
 | -R  Remove Pkg And Bld Dir        -h  Help                      leafpad-aurt: lat   |
 | -C  Ck All Pkgs For Updates                                  thunar-base dir: tbd   |
 | -D  Package Dependency Details                              Orphans:  R $(p -Qtdq)  |
 |=====================================================================================|

The scripts:
Code:
https:bbs.archlinux.org/viewtopic.php?id=232437

I was contemplating using the --quiet "option" with the -S and -Sv operations only, as the rest couldn't use --quiet.

I read getopts will not take long options? My script needs the ability to process package names, ie: aurt -S <package name> That and manually parsing them seemed more straight forward to me when I started, likely because of my inexperience.

At this point, it sounds like I need to get my head around understanding getopts and figure out how to deal with the program names separately?

Just reading the replies from you guys gives my more things to research, test, and think about.
 

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SCRIPT(1)						    BSD General Commands Manual 						 SCRIPT(1)

NAME
script -- make typescript of terminal session SYNOPSIS
script [-akq] [-t time] [file [command ...]] DESCRIPTION
The script utility makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1). If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript. If the argument command is given, script will run the specified command with an optional argument vector instead of an interactive shell. The following options are available: -a Append the output to file or typescript, retaining the prior contents. -k Log keys sent to program as well as output. -q Run in quiet mode, omit the start and stop status messages. -t time Specify time interval between flushing script output file. A value of 0 causes script to flush for every character I/O event. The default interval is 30 seconds. The script ends when the forked shell (or command) exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-D (if ignoreeof is not set) for the C-shell, csh(1)). Certain interactive commands, such as vi(1), create garbage in the typescript file. The script utility works best with commands that do not manipulate the screen. The results are meant to emulate a hardcopy terminal, not an addressable one. ENVIRONMENT
The following environment variable is utilized by script: SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
csh(1) (for the history mechanism). HISTORY
The script command appeared in 3.0BSD. BUGS
The script utility places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues. When running in -k mode, echo cancelling is far from ideal. The slave terminal mode is checked for ECHO mode to check when to avoid manual echo logging. This does not work when in a raw mode where the program being run is doing manual echo. BSD
January 22, 2004 BSD
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