is a shell tool for executing jobs in parallel using multiple CPU cores and/or multiple computers.
| parallel_design.7 (parallel-20210122.tar.bz2) | : | parallel_design.7 (parallel-20210222.tar.bz2) |
|---|
| | |
| skipping to change at line 836 | | skipping to change at line 836 |
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| The argument separator ::: was chosen because I have never seen ::: used
in any command. The natural | | The argument separator ::: was chosen because I have never seen ::: used
in any command. The natural |
| choice -- would be a bad idea since it is not unlikely that the template
command will contain --. I have | | choice -- would be a bad idea since it is not unlikely that the template
command will contain --. I have |
| seen :: used in programming languanges to separate classes, and I did not
want the user to be confused | | seen :: used in programming languanges to separate classes, and I did not
want the user to be confused |
| that the separator had anything to do with classes. | | that the separator had anything to do with classes. |
| | |
| ::: also makes a visual separation, which is good if there are multiple :
::. | | ::: also makes a visual separation, which is good if there are multiple :
::. |
| | |
| When ::: was chosen, :::: came as a fairly natural extension. | | When ::: was chosen, :::: came as a fairly natural extension. |
| | |
| Linking input sources meant having to decide for some way to indicate lin
king of ::: and ::::. :::+ and | | Linking input sources meant having to decide for some way to indicate lin
king of ::: and ::::. :::+ and |
|
| ::::+ was chosen, so that they were similar to ::: and ::::. | | ::::+ were chosen, so that they were similar to ::: and ::::. |
| | |
| Perl replacement strings, {= =}, and --rpl | | Perl replacement strings, {= =}, and --rpl |
| The shorthands for replacement strings make a command look more cryptic.
Different users will need | | The shorthands for replacement strings make a command look more cryptic.
Different users will need |
| different replacement strings. Instead of inventing more shorthands you g
et more flexible replacement | | different replacement strings. Instead of inventing more shorthands you g
et more flexible replacement |
| strings if they can be programmed by the user. | | strings if they can be programmed by the user. |
| | |
| The language Perl was chosen because GNU parallel is written in Perl and
it was easy and reasonably fast | | The language Perl was chosen because GNU parallel is written in Perl and
it was easy and reasonably fast |
| to run the code given by the user. | | to run the code given by the user. |
| | |
| If a user needs the same programmed replacement string again and again, t
he user may want to make his own | | If a user needs the same programmed replacement string again and again, t
he user may want to make his own |
| | |
| skipping to change at line 1004 | | skipping to change at line 1004 |
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| So to lessen the frustration and the resulting support, --tollef was obso
leted 20130222 and removed one | | So to lessen the frustration and the resulting support, --tollef was obso
leted 20130222 and removed one |
| year later. | | year later. |
| | |
| Transferring of variables and functions | | Transferring of variables and functions |
| Until 20150122 variables and functions were transferred by looking at $SH
ELL to see whether the shell was | | Until 20150122 variables and functions were transferred by looking at $SH
ELL to see whether the shell was |
| a *csh shell. If so the variables would be set using setenv. Otherwise th
ey would be set using =. This | | a *csh shell. If so the variables would be set using setenv. Otherwise th
ey would be set using =. This |
| caused the content of the variable to be repeated: | | caused the content of the variable to be repeated: |
| | |
| echo $SHELL | grep "/t\{0,1\}csh" > /dev/null && setenv VAR foo || export
VAR=foo | | echo $SHELL | grep "/t\{0,1\}csh" > /dev/null && setenv VAR foo || export
VAR=foo |
| | |
|
| 20201222 2021-01-20
PARALLEL_DESIGN(7) | | 20210122 2021-01-26
PARALLEL_DESIGN(7) |
| | | |
| End of changes. 2 change blocks. |
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| 1 lines changed or deleted | | 1 lines changed or added |
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