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Bash if statements in one line

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# 8  
Old 03-27-2012
I like the shell built-ins true and false.
Code:
hasArgument1=true
hasArgument2=false

if $hasArgument1; then
  echo has argument 1
fi

if ! $hasArgument2; then
  echo does not have argument 2
fi

# 9  
Old 03-27-2012
Quote:
Originally Posted by Scrutinizer
I like the shell built-ins true and false.
Code:
hasArgument1=true
hasArgument2=false

if $hasArgument1; then
  echo has argument 1
fi

if ! $hasArgument2; then
  echo does not have argument 2
fi

Sounds a good thing for my scripts when I am using hasArgument, rather than checking if it is 0 or 1 all the time. Correct me if I am wrong.

---------- Post updated at 01:56 PM ---------- Previous update was at 11:36 AM ----------

Currently I have a lot of options in the scripts, as shown below.

Thus I end up having hasArgument appended to every option. I am seriously thinking of having a function which I will call

Quote:
hasArgument
which will be called as

Quote:
hasArgument(optionName)

Example:

Quote:
hasArgument("Srcs")
returns true if the option Scrs was supplied by the user.

Is it possible to create such a function call and how would I use it. Seems a good idea at the moment, but would like some input on it.

I have also been thinking of using an associative array hasArgument

For example

Code:
hasArgument[Srcs]=true     # Option Srcs was set by the user.

Code:
hasArgumentCModInfile=0
hasArgumentSrcsInfile=0
hasArgumentRcvsInfile=0
hasArgumentRaysOutfile=0
hasArgumentTrvTOutfile=0

ierr=0
hasArgumentRaytracPath=0
hasArgumentPhases=0
hasArgumentLevel=0
hasArgumentFormat=0
hasArgumentDtau=0
hasArgumentBracD=0
hasArgumentTwPtD=0
hasArgumentTwPtItmax=0
hasArgumentRays=0
hasArgumentTrvT=0
hasArgumentPf=0
hasArgumentRaytracBg=0
hasArgumentRaytracVrbLevel=0

hasArgumentVerbose=0
hasArgumentQuiet=0
hasArgumentUsage=0
hasArgumentExamples=0
hasArgumentHelp=0

hasArgumentBDirPath=0
hasArgumentBDirColPos=0
hasArgumentBDirSortF=0
hasArgumentBDirGroupT=0
hasArgumentBDirAllFiles=0
hasArgumentBDirRaytrac=0
hasArgumentBDirDrw=0
hasArgumentBDirSmp=0
hasArgumentBDirLog=0
hasArgumentBDirMsf=0
hasArgumentBDirVrbLevel=0
hasArgumentBDirQuiet=0
hasArgumentBDirVerbose=1             # Default verbosity for script browseDir.tcsh
hasArgumentBDirFileLst=0

...

if [ $hasArgumentSrcsInfile -eq 1 ]; then

fi

if [ $hasArgumentRcvsInfile -eq 1 ]; then
  ...
fi

if [ $hasArgumentPhases -eq 1 ]; then
  ...
fi

if [ $hasArgumentLevel -eq 1 ]; then
  ...
fi

if [ $hasArgumentFormat -eq 1 ]; then
  ...
fi

if [ $hasArgumentDtau -eq 1 ]; then
  ...
fi

if [ $hasArgumentBracD -eq 1 ]; then
  ...
fi

if [ $hasArgumentTwPtD -eq 1 ]; then
  ...
fi

if [ $hasArgumentTwPtItmax -eq 1 ]; then
  ...
fi

if [ $hasArgumentRaysOutfile -eq 1 ]; then
  ...
fi

if [ $hasArgumentTrvTOutfile -eq 1 ]; then
  ...
fi

---------- Post updated at 02:40 PM ---------- Previous update was at 01:56 PM ----------
Last edited by kristinu; 03-27-2012 at 01:55 PM..
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