You still invoke the default shell

Actually, this particular example wouldn't invoke a shell, because there are no shell metacharacters in the command. 

$ strace -f -eexecve perl -e 'system("import -window root MyScreenshot
+.png")'
execve("/usr/local/bin/perl", ["perl", "-e", "system(\"import -window 
+root MySc"...], [/* 31 vars */]) = 0
Process 20945 attached (waiting for parent)
Process 20945 resumed (parent 20944 ready)
[pid 20945] execve("/home/almut/bin/import", ["import", "-window", "ro
+ot", "MyScreenshot.png"], [/* 31 vars */]) = -1 ENOENT (No such file 
+or directory)
[pid 20945] execve("/usr/local/sbin/import", ["import", "-window", "ro
+ot", "MyScreenshot.png"], [/* 31 vars */]) = -1 ENOENT (No such file 
+or directory)
[pid 20945] execve("/usr/local/bin/import", ["import", "-window", "roo
+t", "MyScreenshot.png"], [/* 31 vars */]) = -1 ENOENT (No such file o
+r directory)
[pid 20945] execve("/usr/sbin/import", ["import", "-window", "root", "
+MyScreenshot.png"], [/* 31 vars */]) = -1 ENOENT (No such file or dir
+ectory)
[pid 20945] execve("/usr/bin/import", ["import", "-window", "root", "M
+yScreenshot.png"], [/* 31 vars */]) = 0

[download]

As you can see, the import is being run directly.

(Add a ';' (metacharacter) at the end of the command, and it will run the command via a shell...)

In reply to Re^3: How to get screenshort using PERL? by almut
in thread How to get screenshort using PERL? by murugaperumal

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