Linux 具有多个参数的Gnu并行-选择性命令执行

我有一个程序，它有3个参数-t，-a和-s-例如

./Run -t 1500 -a 150000 -s filename

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该程序将数据作为一行（7列）附加到文件“filename”的末尾

我想研究这两个参数如何影响范围t in（1500150000[步数5000]）和a in（500600000[步数500]）的输出。到目前为止，我正在做的是

parallel -j+0 ./Run -t {2} -a {1} :::: <(seq 500 500 600000) :::: <seq(1500 5000 15000)

每次更新参数a时

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如何使用gnu parallel实现这一点？

我发现并行附加到同一个文件很可怕：在某些情况下这样做是安全的，但在很多情况下这样做是不安全的：

# Generate files with a single very long line
parallel -j0 perl -e '\$a=\"1{}\"x10000000\;print\ \$a,\"\\n\"' '>' {} ::: {a..z}
rm -f out.par 
# Grep for the single line in parallel - append to same file
parallel -j0 'grep 1 >> out.par' ::: {a..z}
# This ought to only give a single line for each letter
# But because of race condition some lines are split into two
parallel --tag 'grep {} out.par | wc -l' ::: {a..z}
rm out.par
# Do the same in serial (no race condition)
parallel -j1 'grep 1 >> out.par' ::: {a..z}
# Only a single line per letter
parallel --tag 'grep {} out.par | wc -l' ::: {a..z}
# Do the same in parallel but with serialized output (no race condition)
parallel -j0 grep 1 ::: {a..z} > out.par
# Only a single line per letter
parallel --tag 'grep {} out.par | wc -l' ::: {a..z}

因此，如果我是您，我会首先将

/Run

更改为输出为标准输出，这样您就可以：

./Run -t 1500 -2 500 > filename
# And in parallel:
parallel ./Run -t {2} -2 {1} :::: <(seq 500 500 600000) :::: <(seq 1500 5000 15000) > filename

现在我们只需要做一些仅在第一个参数为11500时运行的东西：

parallel -k './Run -t {2} -2 {1}; if [ {2} -eq 11500 ]; then echo "";fi' :::: <(seq 500 500 600000) :::: <(seq 1500 5000 15000) > filename

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parallel-k'./Run-t{2}-2{1}；如果[{2}-等式11500]；然后是“回声”；fi'：“此程序将数据作为一行（共7列）附加到文件“filename”的末尾。如果两个程序同时附加，会发生什么情况？”？
parallel -k ./Run -t {2} -2 {1} :::: <(seq 500 500 600000) :::: <(seq 1500 5000 15000) > filename

parallel -k './Run -t {2} -2 {1}; if [ {2} -eq 11500 ]; then echo "";fi' :::: <(seq 500 500 600000) :::: <(seq 1500 5000 15000) > filename