signal-utils

Signal utils provides small command line utilities for working with and debugging signals on Linux.

sigign

sigign SIGNAL[,SIGNAL...] COMMAND

sigign starts COMMAND with the specified SIGNALs disposition set to SIG_IGN.

sigstat

sigstat PID    

sigstat lists any signals with a non-default disposition for the given process ID. This command requires procfs to be mounted.

sigunmask

sigunmask MASK

sigunmask takes a signal mask in the form listed in /proc/PID/status and returns a list of the masked signals by name.

Known Bugs

• sigign does not work for SIGPIPE. Ruby's interpreter changes SIGPIPE's disposition before exec().

• sigunmask and sigstat does not list the names of real-times signals (>32).