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This was useful for creating simple shortcut commands, but not more complex constructs. Older versions of the Bourne shell did not offer aliases, but it did provide functions, which are more powerful than the csh alias concept. The alias concept from csh was imported into Bourne Again Shell (bash) and the Korn shell (ksh). With shells that ...
The paper describes many features found in Bash. [17] "Christopher Strachey, a British scientist, had visited MIT about that time, and his macro-generator design appeared to me a very solid base for a command language, in particular the techniques for quoting and passing arguments. Without being invited on the subject, I wrote a paper ...
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In 1973, ECMA-35 and ISO 2022 [18] attempted to define a method so an 8-bit "extended ASCII" code could be converted to a corresponding 7-bit code, and vice versa. [19] In a 7-bit environment, the Shift Out would change the meaning of the 96 bytes 0x20 through 0x7F [a] [21] (i.e. all but the C0 control codes), to be the characters that an 8-bit environment would print if it used the same code ...
locate command is also included in MacOS. mlocate (Merging Locate) and the earlier slocate (Secure Locate) use a restricted-access database, only showing filenames accessible to the user. [3] [4] plocate uses posting lists. Like mlocate and slocate, it only shows files if find would list it. [5] Compared to mlocate, it is much faster, and its ...
Markus Alexej Persson was born in Stockholm, Sweden, to a Finnish mother, Ritva, [2] and a Swedish father, Birger, [3] on 1 June 1979. [4] [5] [2] He has one sister.[2] [6] He grew up in Edsbyn until he was seven years old, when his family moved back to Stockholm.
The month and weekday abbreviations are not case-sensitive. In the particular case of the system crontab file (/etc/crontab), a user field inserts itself before the command. It is generally set to 'root'. In some uses of the cron format there is also a seconds field at the beginning of the pattern. In that case, the cron expression is a string ...
In Unicode, a Private Use Area (PUA) is a range of code points that, by definition, will not be assigned characters by the standard. [1] Three private use areas are defined: one in the Basic Multilingual Plane (U+E000–U+F8FF), and one each in, and nearly covering, planes 15 and 16 (U+F0000–U+FFFFD, U+100000–U+10FFFD). They are ...