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Linux / Unix system calls
this example from a Well House Consultants training course
Source code: sed_awk Module: P258
print "Here we go ...\n"; # Run command in its own process and return the status $dx = system("df -k"); # Run command in its own process and return the output from STDOUT $disc = `df -k`; # Run command and pipe the results back open(FH,"df -k|"); @rep = <FH>; print (uc($disc)); print "done\n"; print (uc($dx)); print "done\n"; print @rep; __END__ Sample output: Dorothy-2:j10p grahamellis$ perl sed_awk Here we go ... Filesystem 1024-blocks Used Available Capacity Mounted on /dev/disk0s3 117089712 114865104 1968608 99% / devfs 106 106 0 100% /dev fdesc 1 1 0 100% /dev map -hosts 0 0 0 100% /net FILESYSTEM 1024-BLOCKS USED AVAILABLE CAPACITY MOUNTED ON /DEV/DISK0S3 117089712 114865104 1968608 99% / DEVFS 106 106 0 100% /DEV FDESC 1 1 0 100% /DEV MAP -HOSTS 0 0 0 100% /NET done 0done Filesystem 1024-blocks Used Available Capacity Mounted on /dev/disk0s3 117089712 114865104 1968608 99% / devfs 106 106 0 100% /dev fdesc 1 1 0 100% /dev map -hosts 0 0 0 100% /net Dorothy-2:j10p grahamellis$ Learn about this subject
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