Skip to content

processx

Execute and Control System Processes

v3.8.7 · Apr 1, 2026 · MIT + file LICENSE
CRAN GitHub Mirror

Description

Tools to run system processes in the background. It can check if a background process is running; wait on a background process to finish; get the exit status of finished processes; kill background processes. It can read the standard output and error of the processes, using non-blocking connections. 'processx' can poll a process for standard output or error, with a timeout. It can also poll several processes at once.

Downloads

1M

Last 30 days

54th

4.6M

Last 90 days

12.4M

Last year

Trend: -33% (30d vs prior 30d)

CRAN Check Status

1 WARNING
13 OK
Show all 14 flavors
Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 WARNING
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK
Check details (1 non-OK)
WARNING r-patched-linux-x86_64

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’
This entry point may be removed soon.

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.

Check History

WARNING 9 OK · 4 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE Mar 20, 2026
NOTE r-devel-linux-x86_64-debian-clang

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
WARNING r-devel-linux-x86_64-debian-gcc

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’
This entry point may be removed soon.

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
NOTE r-devel-linux-x86_64-fedora-clang

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
NOTE r-devel-linux-x86_64-fedora-gcc

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
NOTE r-devel-windows-x86_64

compiled code

File 'processx/libs/x64/processx.dll':
  Found non-API call to R: 'Rf_findVar'

Compiled code should not call non-API entry points in R.

See 'Writing portable packages' in the 'Writing R Extensions' manual,
and section 'Moving into C API compliance' for issues with the use of
non-API entry points.
NOTE 13 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 16, 2026
NOTE r-devel-linux-x86_64-debian-gcc

compiled code

File ‘processx/libs/processx.so’:
  Found non-API call to R: ‘Rf_findVar’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.
OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (106)

imports

AzureContainers Colossus GenoTriplo MainExistingDatasets Rsagacmd SigBridgeRUtils aisdk asciicast babelwhale blit callr chattr chromote citestR cliff cloudml condathis crew doconv dynwrap episomer eplusr gittargets gooseR gtfstools guildai gwpcormapper jdenticon mcptools minioclient mlflow nlmixr2auto osrm.backend pagedown pingr pkgbuild pkgcache pkgdepends pkgload pomdp proffer pysparklyr qgisprocess qsub quarto rMIDAS2 rbi rchroma rcloner repana rextendr rgee rhub rixpress rmon rosmium rsyncrosim rush sarsop selenium starburst tensorflow testthat typr virtuoso vvbitwarden wdman xopen

linking_to

asciicast

suggests

AzureStor ReviewR activAnalyzer azr bbotk blogdown brms bsicons btw cli cmdfun cyclocomp dataquieR formatters golem languageserver liteq mlr3fselect mlr3hyperband mlr3mbo mlr3tuning nanoparquet orderly otel otelsdk pak plotly ps rcmdcheck rlistings rtiddlywiki shidashi shinyTempSignal targets tfdeploy vaultr webfakes zip

Dependency Network

Dependencies Reverse dependencies ps R6 AzureContainers Colossus GenoTriplo MainExistingDatasets Rsagacmd SigBridgeRUtils aisdk asciicast babelwhale blit callr chattr chromote citestR cliff +91 more reverse deps processx

Version History

updated 3.8.7 ← 3.8.6 diff Apr 1, 2026
new 3.8.6 Mar 10, 2026
updated 3.8.6 ← 3.8.5 diff Feb 20, 2025
updated 3.8.5 ← 3.8.4 diff Jan 7, 2025
updated 3.8.4 ← 3.8.3 diff Mar 15, 2024
updated 3.8.3 ← 3.8.2 diff Dec 9, 2023
updated 3.8.2 ← 3.8.1 diff Jun 29, 2023
updated 3.8.1 ← 3.8.0 diff Apr 17, 2023
updated 3.8.0 ← 3.7.0 diff Oct 25, 2022
updated 3.7.0 ← 3.6.1 diff Jul 6, 2022
updated 3.6.1 ← 3.6.0 diff Jun 16, 2022
updated 3.6.0 ← 3.5.3 diff Jun 9, 2022
updated 3.5.3 ← 3.5.2 diff Mar 24, 2022
updated 3.5.2 ← 3.5.1 diff Apr 29, 2021
updated 3.5.1 ← 3.5.0 diff Apr 3, 2021
updated 3.5.0 ← 3.4.5 diff Mar 22, 2021
updated 3.4.5 ← 3.4.4 diff Nov 29, 2020
updated 3.4.4 ← 3.4.3 diff Sep 2, 2020
updated 3.4.3 ← 3.4.2 diff Jul 4, 2020
updated 3.4.2 ← 3.4.1 diff Feb 8, 2020