Above, I made a small error. $ egrep -i "error|warn|fail|miss|unknown|not found" /tmp/pdfjam-uZGvhO/a.log /tmp/pdfjam-uZGvhO/a.log:! Package keyval Error: output undefined.
should read $ egrep -i "error|warn|fail|miss|unknown|not found" /tmp/pdfjam-uZGvhO/a.log ! Package keyval Error: output undefined. Originally, I issued $ egrep -i "error|warn|fail|miss|unknown|not found" /tmp/pdfjam-uZGvhO/* with more lines found; each started with a file name.
