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$ sign doesn't work with ipcBeginProcess

Yaosan

I would like to run a command with $ sign in it with ipcBeginProcess but I cannot get it to work. For example:

cmd = "perl -e '$i=1; print $i;'"
cid = ipcBeginProcess(cmd)
ipcWait(cid)
ipcReadProcess(cid)

The $i seems to be replaced by empty string when I do this. I tried putting in two $ sign to "escape" the sign but it doesn't work.

Parents

  •  Hi Yaosan,

    Have you tried escaping the "$" by preceding it with a backslash (or perhaps two backslashes - I have not checked in this case), e.g. 

      cmd = "perl -e '\$i=1; print \$i;'"
    
;; may need this instead, uncomment if the above does not work
    
;  cmd = "perl -e '\\$i=1; print \\$i;'"
    
  cid = ipcBeginProcess(cmd)
    
  ipcWait(cid)
    
  ipcReadProcess(cid)

    I hope that this helps!

    best regards,

    Lawrence.

Reply

  •  Hi Yaosan,

    Have you tried escaping the "$" by preceding it with a backslash (or perhaps two backslashes - I have not checked in this case), e.g. 

      cmd = "perl -e '\$i=1; print \$i;'"
    
;; may need this instead, uncomment if the above does not work
    
;  cmd = "perl -e '\\$i=1; print \\$i;'"
    
  cid = ipcBeginProcess(cmd)
    
  ipcWait(cid)
    
  ipcReadProcess(cid)

    I hope that this helps!

    best regards,

    Lawrence.

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