OnWorks favicon

checkbashisms - Online in the Cloud

Run checkbashisms in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command checkbashisms that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



checkbashisms - check for bashisms in /bin/sh scripts


checkbashisms script ...
checkbashisms --help|--version


checkbashisms, based on one of the checks from the lintian system, performs basic checks
on /bin/sh shell scripts for the possible presence of bashisms. It takes the names of the
shell scripts on the command line, and outputs warnings if possible bashisms are detected.

Note that the definition of a bashism in this context roughly equates to "a shell feature
that is not required to be supported by POSIX"; this means that some issues flagged may be
permitted under optional sections of POSIX, such as XSI or User Portability.

In cases where POSIX and Debian Policy disagree, checkbashisms by default allows
extensions permitted by Policy but may also provide options for stricter checking.


--help, -h
Show a summary of options.

--newline, -n
Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)

--posix, -p
Check for issues which are non POSIX but required to be supported by Debian Policy
10.4 (implies -n).

--force, -f
Force each script to be checked, even if it would normally not be (for instance, it
has a bash or non POSIX shell shebang or appears to be a shell wrapper).

--extra, -x
Highlight lines which, whilst they do not contain bashisms, may be useful in
determining whether a particular issue is a false positive which may be ignored.
For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is

--version, -v
Show version and copyright information.


The exit value will be 0 if no possible bashisms or other problems were detected.
Otherwise it will be the sum of the following error values:

1 A possible bashism was detected.

2 A file was skipped for some reason, for example, because it was unreadable or not
found. The warning message will give details.

4 No bashisms were detected in a bash script.

Use checkbashisms online using onworks.net services

Free Servers & Workstations

Download Windows & Linux apps

  • 1
    ExpressLuke GSI
    ExpressLuke GSI
    This SourceForge download page was to
    grant users to download my source built
    GSIs, based upon phhusson's great
    work. I build both Android Pie and
    Android 1...
    Download ExpressLuke GSI
  • 2
    PyQt is the Python bindings for
    Digia's Qt cross-platform
    application development framework. It
    supports Python v2 and v3 and Qt v4 and
    Qt v5. PyQt is avail...
    Download PyQt
  • 3
    Gambas3* coding tools and examples for
    use in SMB or other organizations that
    make internal programs. E.g. from
    database fields to class sourcecode with
    Download garlic3
  • 4
    Sardi is a complete restyling and
    optimisation of svg code. 6 choices for
    your applications and 10 kind of folders
    to use in your file manager. The sardi
    Download Sardi
  • 5
    LMMS Digital Audio Workstation
    LMMS Digital Audio Workstation
    LMMS is a free cross-platform software
    which allows you to produce music with
    your computer. If you like this project
    consider getting involved in the project
    Download LMMS Digital Audio Workstation
  • 6
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS is a market-leading real-time
    operating system (RTOS) for
    microcontrollers and small
    microprocessors. Distributed freely
    under the MIT open source lice...
    Download FreeRTOS Real Time Kernel (RTOS)
  • 7
    Avogadro is an advanced molecular
    editor designed for cross-platform use
    in computational chemistry, molecular
    modeling, bioinformatics, materials
    science and ...
    Download Avogadro
  • More »

Linux commands