Resources
GCC COBOL Debugging
COBOLworx extended the GNU Project Debugger (external link) to support GCC COBOL with source-level debugging (external link.) Packages available for Ubuntu LTS 22 and 24.
GnuCOBOL
GnuCOBOL Project (external link)
GnuCOBOL and CBL-GDB packages (external link)
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for Windows, Debian/Ubuntu, and Red Hat
GnuCOBOL Documentation
GnuCOBOL Programmer's Guide (external link)
COBOLworx GnuCOBOL Knowledge Base (external link)
GnuCOBOL Debugging
About the Debugging Extensions (external link)
Debugging Extensions Command List (external link)
Debugging Extensions Walkthrough (external link)
Other COBOL-related Documents
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CODASYL Report - The original standards committee’s report on its activities. History as they reported it.
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IBM COBOL E/F Language Reference - 1970.
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Jean Sammet’s 1969 book Programming Languages: History and Fundamentals. Jean was a member of the CODASYL committee with Grace Hopper. She represented IBM and is credited with a significant contribution to the technical aspects of the original COBOL standard.
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The 1401/1410 Tape System COBOL Reference … a 4K system
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The 1970 paper with the text of the Federal Information Processing Standards (FIPS) adoption of American National Standard (ANSI) COBOL as the Federal Standard COBOL. Found in the CIA “reading room”.