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I want to debug like:
strace -fe open python /usr/bin/gnome-tweak-tool 2>>/tmp/hello.log
strace -fe open python /usr/bin/gnome-tweak-tool 2>>/tmp/hello2.log
Then use kdiff3 to compare both logs, but different pids will make this comparison useless:
So my question is there any option from strace to exclude such -f pid ?
One could log the outputs of the different pids to different files via the -ff -o filename options:
strace -o foo -ff -e open perl -e fork
strace -o bar -ff -e open perl -e fork
and then compare the appropriate foo.<pidnum> and bar.<pidnum> files.
cat bar* > mybar && cat foo* > myfoo && kdiff3 mybar myfoo to compare in one step.
sed -r -e 's/^(.+)pid [0-9]+(.+)$/\1pid-xxxx\2/;' -i /tmp/hello2.log
or filter it same way from output.
pid-xxxx. Empty output when i run sed -r -e 's/pid-[0-9]+/pid-12625/;' -i hello3.log which 12625 is one of the pid in this file. And there are a lot of pids and i need to figure out the unqiue pids one by one?
[pid 12606] +++ exited with 0 +++ will shrink to +++ exited with 0 +++ ?) and empty output in terminal when i run sed -r -e 's/^(.+)pid-[0-9]+(.+)$/\1pid-12606\2/;' -i ./hello3.log, my sed version is sed (GNU sed) 4.2.2