rush is a tool similar to GNU parallel and gargs. rush borrows some idea from them and has some unique features, e.g., supporting custom defined variables, resuming multi-line commands, more advanced embeded replacement strings.

These features make rush suitable for easily and flexibly parallelizing complex workflows in fields like Bioinformatics (see examples 18).

• Features
• Performance
• Installation
• Usage
• Examples
• Special Cases
• Contributors
• Acknowledgements
• Contact
• License

Major:

• Supporting Linux, OS X and Windows (not CygWin)!
• Avoid mixed line from multiple processes without loss of performance, e.g. the first half of a line is from one process and the last half of the line is from another process. (--line-buffer in GNU parallel)
• Timeout (-t). (--timeout in GNU parallel)
• Retry (-r). (--retry-failed --joblog in GNU parallel)
• Safe exit after capturing Ctrl-C
• Continue (-c). (--resume --joblog in GNU parallel, but it does not support multi-line commands, which are common in workflow)
• awk -v like custom defined variables (-v). (Using Shell variable in GNU parallel)
• Keeping output in order of input (-k). (Same -k/--keep-order in GNU parallel)
• Exit on first error(s) (-e). (--halt 2 in GNU parallel)
• Settable record delimiter (-D, default \n). (--recstart and --recend in GNU parallel)
• Settable records sending to every command (-n, default 1). (-n/--max-args in GNU parallel)
• Settable field delimiter (-d, default \s+). (Same -d/--delimiter in GNU parallel)
• Practical replacement strings (like GNU parallel):
  • {#}, job ID. (Same in GNU parallel)
  • {}, full data. (Same in GNU parallel)
  • {n}, nth field in delimiter-delimited data. (Same in GNU parallel)
  • Directory and file
    • {/}, dirname. ({//} in GNU parallel)
    • {%}, basename. ({/} in GNU parallel)
    • {.}, remove the last extension. (Same in GNU parallel)
    • {:}, remove any extension (Not supported in GNU parallel)
    • {^suffix}, remove suffix (Not supported in GNU parallel)
    • {@regexp}, capture submatch using regular expression (Not supported in GNU parallel)
  • Combinations
    • {%.}, {%:}, basename without extension
    • {2.}, {2/}, {2%.}, manipulate nth field
• Preset variable (macro), e.g., rush -v p={^suffix} 'echo {p}_new_suffix', where {p} is replaced with {^suffix}. (Using Shell variable in GNU parallel)

Minor:

• Dry run (--dry-run). (Same in GNU parallel)
• Trim input data (--trim). (Same in GNU parallel)
• Verbose output (--verbose). (Same in GNU parallel)

Differences between rush and GNU parallel on GNU parallel site.

Performance of rush is similar to gargs, and they are both slightly faster than parallel (Perl) and both slower than Rust parallel (discussion).

Note that speed is not the #.1 target, especially for processes that last long.

rush is implemented in Go programming language, executable binary files for most popular operating systems are freely available in release page.

rush v0.3.0

Tip: run rush -V to check update !!!

OS	Arch	File, (中国镜像)	Download Count
Linux	32-bit	rush_linux_386.tar.gz, (mirror)
Linux	64-bit	rush_linux_amd64.tar.gz, (mirror)
OS X	32-bit	rush_darwin_386.tar.gz, (mirror)
OS X	64-bit	rush_darwin_amd64.tar.gz, (mirror)
Windows	32-bit	rush_windows_386.exe.tar.gz, (mirror)
Windows	64-bit	rush_windows_amd64.exe.tar.gz, (mirror)

Just download compressed executable file of your operating system, and decompress it with tar -zxvf *.tar.gz command or other tools. And then:

1. For Linux-like systems

   1. If you have root privilege simply copy it to /usr/local/bin:

       sudo cp rush /usr/local/bin/
      

   2. Or add the current directory of the executable file to environment variable PATH:

       echo export PATH=\$PATH:\"$(pwd)\" >> ~/.bashrc
       source ~/.bashrc
      

2. For windows, just copy rush.exe to C:\WINDOWS\system32.

go get -u github.com/shenwei356/rush/

rush -- a cross-platform command-line tool for executing jobs in parallel

Version: 0.3.0

Author: Wei Shen <[email protected]>

Homepage: https://github.com/shenwei356/rush

Usage:
  rush [flags] [command] [args of command...]

Examples:
  1. simple run, quoting is not necessary
      $ seq 1 10 | rush echo {}
  2. keep order
      $ seq 1 10 | rush 'echo {}' -k
  3. timeout
      $ seq 1 | rush 'sleep 2; echo {}' -t 1
  4. retry
      $ seq 1 | rush 'python script.py' -r 3
  5. dirname & basename & remove suffix
      $ echo dir/file_1.txt.gz | rush 'echo {/} {%} {^_1.txt.gz}'
      dir file.txt.gz dir/file
  6. basename without last or any extension
      $ echo dir.d/file.txt.gz | rush 'echo {.} {:} {%.} {%:}'
      dir.d/file.txt dir.d/file file.txt file
  7. job ID, combine fields and other replacement strings
      $ echo 12 file.txt dir/s_1.fq.gz | rush 'echo job {#}: {2} {2.} {3%:^_1}'
      job 1: file.txt file s
  8. capture submatch using regular expression
      $ echo read_1.fq.gz | rush 'echo {@(.+)_\d}'
      read
  9. custom field delimiter
      $ echo a=b=c | rush 'echo {1} {2} {3}' -d =
      a b c
  10. custom record delimiter
      $ echo a=b=c | rush -D "=" -k 'echo {}'
      a
      b
      c
      $ echo abc | rush -D "" -k 'echo {}'
      a
      b
      c
  11. assign value to variable, like "awk -v"
      # seq 1 | rush 'echo Hello, {fname} {lname}!' -v fname=Wei,lname=Shen
      $ seq 1 | rush 'echo Hello, {fname} {lname}!' -v fname=Wei -v lname=Shen
      Hello, Wei Shen!
  12. preset variable (Macro)
      # equal to: echo read_1.fq.gz | rush 'echo {:^_1} {:^_1}_2.fq.gz'
      $ echo read_1.fq.gz | rush -g -v p={:^_1} 'echo {p} {p}_2.fq.gz'
      read read_2.fq.gz
  13. save successful commands to continue in NEXT run
      $ seq 1 3 | rush 'sleep {}; echo {}' -c -t 2
      [INFO] ignore cmd #1: sleep 1; echo 1
      [ERRO] run cmd #1: sleep 2; echo 2: time out
      [ERRO] run cmd #2: sleep 3; echo 3: time out
  14. escape special symbols
      $ seq 1 | rush 'echo -e "a\tb" | awk "{print $1}"' -q
      a

  More examples: https://github.com/shenwei356/rush

Flags:
  -v, --assign strings            assign the value val to the variable var (format: var=val, val also supports replacement strings)
  -c, --continue                  continue jobs. NOTES: 1) successful commands are saved in file (given by flag -C/--succ-cmd-file); 2) if the file does not exist, rush saves data so we can continue jobs next time; 3) if the file exists, rush ignores jobs in it and update the file
      --dry-run                   print command but not run
  -q, --escape                    escape special symbols like $ which you can customize by flag -Q/--escape-symbols
  -Q, --escape-symbols string     symbols to escape (default "$#&`")
  -d, --field-delimiter string    field delimiter in records, support regular expression (default "\\s+")
  -h, --help                      help for rush
  -i, --infile strings            input data file, multi-values supported
  -j, --jobs int                  run n jobs in parallel (default value depends on your device) (default 4)
  -k, --keep-order                keep output in order of input
      --kill-on-ctrl-c            kill child processes on ctrl-c (default true)
  -n, --nrecords int              number of records sent to a command (default 1)
  -o, --out-file string           out file ("-" for stdout) (default "-")
      --print-retry-output        print output from retry commands (default true)
      --propagate-exit-status     propagate child exit status up to the exit status of rush (default true)
  -D, --record-delimiter string   record delimiter (default is "\n") (default "\n")
  -J, --records-join-sep string   record separator for joining multi-records (default is "\n") (default "\n")
  -r, --retries int               maximum retries (default 0)
      --retry-interval int        retry interval (unit: second) (default 0)
  -e, --stop-on-error             stop all processes on first error(s)
  -C, --succ-cmd-file string      file for saving successful commands (default "successful_cmds.rush")
  -t, --timeout int               timeout of a command (unit: second, 0 for no timeout) (default 0)
  -T, --trim string               trim white space (" \t\r\n") in input (available values: "l" for left, "r" for right, "lr", "rl", "b" for both side)
      --verbose                   print verbose information
  -V, --version                   print version information and check for update

1. Simple run, quoting is not necessary

    # seq 1 3 | rush 'echo {}'
    $ seq 1 3 | rush echo {}
    3
    1
    2
   

2. Read data from file (-i)

    $ rush echo {} -i data1.txt -i data2.txt
   

3. Keep output order (-k)

    $ seq 1 3 | rush 'echo {}' -k
    1
    2
    3
   

4. Timeout (-t)

    $ time seq 1 | rush 'sleep 2; echo {}' -t 1
    [ERRO] run command #1: sleep 2; echo 1: time out
   
    real    0m1.010s
    user    0m0.005s
    sys     0m0.007s
   

5. Retry (-r)

    $ seq 1 | rush 'python unexisted_script.py' -r 1
    python: can't open file 'unexisted_script.py': [Errno 2] No such file or directory
    [WARN] wait command: python unexisted_script.py: exit status 2
    python: can't open file 'unexisted_script.py': [Errno 2] No such file or directory
    [ERRO] wait command: python unexisted_script.py: exit status 2
   

6. Dirname ({/}) and basename ({%}) and remove custom suffix ({^suffix})

    $ echo dir/file_1.txt.gz | rush 'echo {/} {%} {^_1.txt.gz}'
    dir file_1.txt.gz dir/file
   

7. Get basename, and remove last ({.}) or any ({:}) extension

    $ echo dir.d/file.txt.gz | rush 'echo {.} {:} {%.} {%:}'
    dir.d/file.txt dir.d/file file.txt file
   

8. Job ID, combine fields index and other replacement strings

    $ echo 12 file.txt dir/s_1.fq.gz | rush 'echo job {#}: {2} {2.} {3%:^_1}'
    job 1: file.txt file s
   

9. Capture submatch using regular expression ({@regexp})

    $ echo read_1.fq.gz | rush 'echo {@(.+)_\d}'
   

10. Custom field delimiter (-d)

     $ echo a=b=c | rush 'echo {1} {2} {3}' -d =
     a b c
    

11. Send multi-lines to every command (-n)

     $ seq 5 | rush -n 2 -k 'echo "{}"; echo'
     1
     2
    
     3
     4
    
     5
    
     # Multiple records are joined with separator `"\n"` (`-J/--records-join-sep`)
     $ seq 5 | rush -n 2 -k 'echo "{}"; echo' -J ' '
     1 2
    
     3 4
    
     5
    
     $ seq 5 | rush -n 2 -k -j 3 'echo {1}'
     1
     3
     5
    

12. Custom record delimiter (-D), note that empty records are not used.

     $ echo a b c d | rush -D " " -k 'echo {}'
     a
     b
     c
     d
    
     $ echo abcd | rush -D "" -k 'echo {}'
     a
     b
     c
     d
    
     # FASTA format
     $ echo -ne ">seq1\nactg\n>seq2\nAAAA\n>seq3\nCCCC"
     >seq1
     actg
     >seq2
     AAAA
     >seq3
     CCCC
    
     $ echo -ne ">seq1\nactg\n>seq2\nAAAA\n>seq3\nCCCC" | rush -D ">" 'echo FASTA record {#}: name: {1} sequence: {2}' -k -d "\n"
     FASTA record 1: name: seq1 sequence: actg
     FASTA record 2: name: seq2 sequence: AAAA
     FASTA record 3: name: seq3 sequence: CCCC
    

13. Assign value to variable, like awk -v (-v)

     $ seq 1  | rush 'echo Hello, {fname} {lname}!' -v fname=Wei -v lname=Shen
     Hello, Wei Shen!
    
     $ seq 1  | rush 'echo Hello, {fname} {lname}!' -v fname=Wei,lname=Shen
     Hello, Wei Shen!
    
     $ for var in a b; do \
     $   seq 1 3 | rush -k -v var=$var 'echo var: {var}, data: {}'; \
     $ done
     var: a, data: 1
     var: a, data: 2
     var: a, data: 3
     var: b, data: 1
     var: b, data: 2
     var: b, data: 3
    

14. Preset variable (-v), avoid repeatedly writing verbose replacement strings

     # naive way
     $ echo read_1.fq.gz | rush 'echo {:^_1} {:^_1}_2.fq.gz'
     read read_2.fq.gz
    
     # macro + removing suffix
     $ echo read_1.fq.gz | rush -v p='{:^_1}' 'echo {p} {p}_2.fq.gz'
    
     # macro + regular expression
     $ echo read_1.fq.gz | rush -v p='{@(.+?)_\d}' 'echo {p} {p}_2.fq.gz'
    

15. Escape special symbols

     $ seq 1 | rush 'echo "I have $100"'
     I have 00
     $ seq 1 | rush 'echo "I have $100"' -q
     I have $100
     $ seq 1 | rush 'echo "I have $100"' -q --dry-run
     echo "I have \$100"
    
     $ seq 1 | rush 'echo -e "a\tb" | awk "{print $1}"'
     a       b
    
     $ seq 1 | rush 'echo -e "a\tb" | awk "{print $1}"' -q
     a
    

16. Interrupt jobs by Ctrl-C, rush will stop unfinished commands and exit.

     $ seq 1 20 | rush 'sleep 1; echo {}'
     ^C[CRIT] received an interrupt, stopping unfinished commands...
     [ERRO] wait cmd #7: sleep 1; echo 7: signal: interrupt
     [ERRO] wait cmd #5: sleep 1; echo 5: signal: killed
     [ERRO] wait cmd #6: sleep 1; echo 6: signal: killed
     [ERRO] wait cmd #8: sleep 1; echo 8: signal: killed
     [ERRO] wait cmd #9: sleep 1; echo 9: signal: killed
     1
     3
     4
     2
    

17. Continue/resume jobs (-c). When some jobs failed (by execution failure, timeout, or cancelling by user with Ctrl + C), please switch flag -c/--continue on and run again, so that rush can save successful commands and ignore them in NEXT run.

     $ seq 1 3 | rush 'sleep {}; echo {}' -t 3 -c
     1
     2
     [ERRO] run cmd #3: sleep 3; echo 3: time out
    
     # successful commands:
     $ cat successful_cmds.rush
     sleep 1; echo 1__CMD__
     sleep 2; echo 2__CMD__
    
     # run again
     $ seq 1 3 | rush 'sleep {}; echo {}' -t 3 -c
     [INFO] ignore cmd #1: sleep 1; echo 1
     [INFO] ignore cmd #2: sleep 2; echo 2
     [ERRO] run cmd #1: sleep 3; echo 3: time out
    

    Commands of multi-lines (Not supported in GNU parallel)

     $ seq 1 3 | rush 'sleep {}; echo {}; \
     echo finish {}' -t 3 -c -C finished.rush
     1
     finish 1
     2
     finish 2
     [ERRO] run cmd #3: sleep 3; echo 3; \
     echo finish 3: time out
    
     $ cat finished.rush
     sleep 1; echo 1; \
     echo finish 1__CMD__
     sleep 2; echo 2; \
     echo finish 2__CMD__
    
     # run again
     $ seq 1 3 | rush 'sleep {}; echo {}; \
     echo finish {}' -t 3 -c -C finished.rush
     [INFO] ignore cmd #1: sleep 1; echo 1; \
     echo finish 1
     [INFO] ignore cmd #2: sleep 2; echo 2; \
     echo finish 2
     [ERRO] run cmd #1: sleep 3; echo 3; \
     echo finish 3: time out
    

    Commands are saved to file (-C) right after it finished, so we can view the check finished jobs:

     grep -c __CMD__ successful_cmds.rush
    

18. A comprehensive example: downloading 1K+ pages given by three URL list files using phantomjs save_page.js (some page contents are dynamicly generated by Javascript, so wget does not work). Here I set max jobs number (-j) as 20, each job has a max running time (-t) of 60 seconds and 3 retry changes (-r). Continue flag -c is also switched on, so we can continue unfinished jobs. Luckily, it's accomplished in one run 😄

     $ for f in $(seq 2014 2016); do \
     $    /bin/rm -rf $f; mkdir -p $f; \
     $    cat $f.html.txt | rush -v d=$f -d = 'phantomjs save_page.js "{}" > {d}/{3}.html' -j 20 -t 60 -r 3 -c; \
     $ done
    

19. A bioinformatics example: mapping with bwa, and processing result with samtools:

     $ tree raw.cluster.clean.mapping
     raw.cluster.clean.mapping
     ├── M1
     │   ├── M1_1.fq.gz -> ../../raw.cluster.clean/M1/M1_1.fq.gz
     │   ├── M1_2.fq.gz -> ../../raw.cluster.clean/M1/M1_2.fq.gz
     ...
    
     $ ref=ref/xxx.fa
     $ threads=25
     $ ls -d raw.cluster.clean.mapping/* \
         | rush -v ref=$ref -v j=$threads \
             'bwa mem -t {j} -M -a {ref} {}/{%}_1.fq.gz {}/{%}_2.fq.gz > {}/{%}.sam; \
             samtools view -bS {}/{%}.sam > {}/{%}.bam; \
             samtools sort -T {}/{%}.tmp -@ {j} {}/{%}.bam -o {}/{%}.sorted.bam; \
             samtools index {}/{%}.sorted.bam; \
             samtools flagstat {}/{%}.sorted.bam > {}/{%}.sorted.bam.flagstat; \
             /bin/rm {}/{%}.bam {}/{%}.sam;' \
             -j 2 --verbose -c -C mapping.rush
    

    Since {}/{%} appears many times, we can use preset variable (macro) to simplify it:

     $ ls -d raw.cluster.clean.mapping/* \
         | rush -v ref=$ref -v j=$threads -v p='{}/{%}' \
             'bwa mem -t {j} -M -a {ref} {p}_1.fq.gz {p}_2.fq.gz > {p}.sam; \
             samtools view -bS {p}.sam > {p}.bam; \
             samtools sort -T {p}.tmp -@ {j} {p}.bam -o {p}.sorted.bam; \
             samtools index {p}.sorted.bam; \
             samtools flagstat {p}.sorted.bam > {p}.sorted.bam.flagstat; \
             /bin/rm {p}.bam {p}.sam;' \
             -j 2 --verbose -c -C mapping.rush
    

• Shell grep returns exit code 1 when no matches found. rush thinks it failed to run. Please use grep foo bar || true instead of grep foo bar.

    $ seq 1 | rush 'echo abc | grep 123'
    [ERRO] wait cmd #1: echo abc | grep 123: exit status 1
    $ seq 1 | rush 'echo abc | grep 123 || true'
  

• Brian Burgin

Specially thank @brentp and his gargs, from which rush borrows some ideas.

Thank @bburgin for his contribution on improvement of child process management.

Create an issue to report bugs, propose new functions or ask for help.

MIT License