Strace: Difference between revisions
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Say you have some python application such as [[Reposurgeon]] that you need to understand better. You can attach <code>strace</code> to the <code>pid</code> of the running application to see the underlying system calls being made. | Say you have some python application such as [[Reposurgeon]] that you need to understand better. You can attach <code>strace</code> to the <code>pid</code> of the running application to see the underlying system calls being made. | ||
< | <syntaxhighlight lang="bash"> | ||
sudo strace -f -s128 -e trace=open -p$(ps -o lwp= -LC python2 | tail -1) | sudo strace -f -s128 -e trace=open -p$(ps -o lwp= -LC python2 | tail -1) | ||
# -f follow child processes | # -f follow child processes | ||
# -s string width | # -s string width | ||
# -e set which calls you want to see. Using trace=open is like sudo lsof -ad3-999 -c python2 | # -e set which calls you want to see. Using trace=open is like sudo lsof -ad3-999 -c python2 | ||
</ | </syntaxhighlight> | ||