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Feb
22
awarded  Excavator
Feb
22
revised What are guarantees for concurrent writes into a named pipe?
typo fix (rational -> rationale) and link to rationale
Feb
22
suggested approved edit on What are guarantees for concurrent writes into a named pipe?
Feb
19
awarded  Nice Answer
Dec
10
comment how to write a udev rule to remove a tag?
udev supports removing tags via TAG-="foo" as of v217, which was released 2014-10-27. (commit, changelog entry)
Nov
22
accepted Get bash DEBUG trap to execute only once for and/or lists?
Sep
19
accepted how to write a udev rule to remove a tag?
Sep
19
comment how to write a udev rule to remove a tag?
Look what I just found: thread.gmane.org/gmane.comp.sysutils.systemd.devel/22841
Sep
19
comment how to write a udev rule to remove a tag?
Thank you, I was unaware of last_rule. This works only if my rule is evaluated before the TAG+="uaccess" rule. I think I can guarantee this ordering if my rules filename is lexically sorted before 70-uaccess.rules, right? (e.g., name it /etc/udev/rules.d/69-uaccess-preempt.rules)
Sep
19
asked how to write a udev rule to remove a tag?
Jun
30
awarded  Yearling
Apr
17
comment Get bash DEBUG trap to execute only once for and/or lists?
@StephaneChazelas: Thanks for the link. It looks like preexec.bash basically does what I do in my answer (via the preexec_interactive_mode variable), so maybe the approach in my answer is as non-kludgy as it can get. I do wish bash had something like zsh's preexec() hook.
Apr
17
answered Get bash DEBUG trap to execute only once for and/or lists?
Apr
17
asked Get bash DEBUG trap to execute only once for and/or lists?
Apr
14
awarded  Notable Question
Jan
8
comment Using while loop to ssh to multiple servers
The -u option is not supported by POSIX, and thus should not be used for #!/bin/sh scripts; use read HOST <&10 instead. Also, POSIX only requires shells to support file descriptors 0 through 9, so 10<servers.txt can't be used if the script is to be strictly conforming.
Jan
8
comment Using while loop to ssh to multiple servers
Another alternative: exec 3<&0; while read HOST; do ssh $HOST "uname -a" <&3; done <servers.txt; exec 3<&- This makes file descriptor 3 a backup of the original stdin, then uses it for ssh's stdin, then closes the backup FD when done. This works on any POSIX-compatible shell.
Aug
5
revised Why not use “which”? What to use then?
add section headings to make it easier to skim the answer; add a tl;dr section at the top for people who just want to know the answer
Aug
5
suggested approved edit on Why not use “which”? What to use then?
Jun
29
answered Preventing propagation of SIGINT to Parent Process