hp-ux

问题 I've got a shell script which does the following to store the current day's date in a variable 'dt': date "+%a %d/%m/%Y" | read dt echo ${dt} How would i go about getting yesterdays date into a variable? Basically what i'm trying to achieve is to use grep to pull all of yesterday's lines from a log file, since each line in the log contains the date in "Mon 01/02/2010" format. Thanks a lot 回答1: If you have Perl available (and your date doesn't have nice features like yesterday ), you can use:

问题 Several processes with the same name are running on host. What is the cross-platform way to get PIDs of those processes by name using python or jython ? I want something like pidof but in python. (I don't have pidof anyway.) I can't parse /proc because it might be unavailable (on HP-UX). I do not want to run os.popen('ps') and parse the output because I think it is ugly (field sequence may be different in different OS). Target platforms are Solaris, HP-UX, and maybe others. 回答1: You can use

问题 On SunOS there is pargs command that prints the command line arguments passed to the running process. Is there is any similar command on other Unix environments? 回答1: There are several options: ps -fp <pid> cat /proc/<pid>/cmdline | sed -e "s/\x00/ /g"; echo There is more info in /proc/<pid> on Linux, just have a look. On other Unixes things might be different. The ps command will work everywhere, the /proc stuff is OS specific. For example on AIX there is no cmdline in /proc . 回答2: This will