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? (run-program "ls" '() :output *standard-output*)
money.lisp
ssqHitNum.txt
ssqNum.txt
#<EXTERNAL-PROCESS (ls)[1019] (EXITED : 0) #x3867BACE>
? (run-program "tail ssqHitNum.txt" '() :output *standard-output*)
#<EXTERNAL-PROCESS (tail ssqHitNum.txt)[1020] (EXITED : 71) #x38679E56>
Why canot CCL run “tail ssqHitNum.txt” ?
As detailed in the docs, http://ccl.clozure.com/ccl-documentation.html#Running-Other-Programs-as-Subprocesses, you need to capture the output. This is one of the documented ways:
The output is now contained in s and you can do whatever you want with it.