这是因为在linux上，/dev/fd/0（或/proc/self/fd/0或/proc/$$/fd/0（仅在shell中））是一个符...
Tasks that can be performed in more than one environment There are some tasks that can be performed in more than one environment: in the shells, in TSO/E, or perhaps in ISPF. If the same task can be performed in more than one environment, that is noted. z/OS information This ...
more verbose description. If the -V or -v option is supplied, the exit status is 0 if command was found, and 1 if not. If neither option is supplied and an error occurred or command cannot be found, the exit status is 127. Otherwise, the exit status of the command builtin is the ...
Convert the socket into a Unix domain socket at the file specified bySOCKET_PATH, which is either created during bind or used as the target when connecting. Placeholders are allowed here and are substituted accordingly: %p port number orunknownif not an IP socket ...
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10) How to terminate a shell script if statement? A shell script if statement can be terminated by using "fi." 11) Write down some common shells with their indicators? sh - Bourne shell csh - C Shell bash - Bourne Again Shell
If Command Extensions are enabled SET changes as follows: SET command invoked with just a variable name, no equal sign or value will display the value of all variables whose prefix matches the name given to the SET command. For example: ...
《unix初级教程(第五版)(英文版)》Afzal_Chapter5 Page1Directions:Readeachofthefollowingstatements.Ifyouthinkastatementistrue,selectTrue.Ifyouthinkastatementisfalse,selectFalse.1.Thedirectorystructureisarrangedinlevelsandisknownasahierarchicalstructure.a.Trueb.FalseYourloginnameandyourhomedirectorynameareusually...
PFSPARM A variable-length field that contains the text string that is specified in the PARM parameter of the FILESYSTYPE statement. This is a 2-byte field that contains the length of the text string, followed by the string. If this parameter is absent, the length field is zero. OSIT ...
Sample statement: select date4, from_unixtime(date4) as date4_from_unixtime from mf_date_fun_t; The following result is returned: +---+---+ | date4 | date4_from_unixtime | +---+---+ | 123456780 | 1973-11-30 05:33:00 | | 123456781 | 1973-11-30 05:33:01 | ...