{"id":14252,"date":"2024-03-15T08:45:03","date_gmt":"2024-03-15T08:45:03","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-modify-variable-values-in-gdb-on-linux\/"},"modified":"2025-08-06T06:08:33","modified_gmt":"2025-08-06T06:08:33","slug":"how-to-modify-variable-values-in-gdb-on-linux","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-modify-variable-values-in-gdb-on-linux\/","title":{"rendered":"Modify Variables in GDB: Linux Debugging Guide"},"content":{"rendered":"

To change the value of a variable in Linux using GDB, you can follow these steps:<\/p>\n

    \n
  1. To start the GDB debugger, the command format is: gdb executable file. For example, to debug an executable file named “example,” you can execute the command gdb example.<\/li>\n
  2. To set a breakpoint in GDB, you can use the break command. For example, if you want to set a breakpoint at line 10 of the function foo, you can execute the command break foo:10.<\/li>\n
  3. To run the program, you can use the run command. For example, enter the command run.<\/li>\n
  4. When the program stops at a breakpoint, you can use the print command to view the current value of variables. For example, to check the value of variable x, you can execute the command print x.<\/li>\n
  5. To change the value of a variable, use the set command. For example, to change the value of variable x to 10, you can execute the command set x = 10.<\/li>\n
  6. To continue executing the program, you can use the continue command. For example, to resume running the program, you can use the continue command.<\/li>\n
  7. You can check the new value of the variable by using the print command again. For example, execute the command print x.<\/li>\n
  8. If further debugging or modifying of other variables is needed, repeat steps 4 to 7.<\/li>\n
  9. After finishing debugging, you can exit the GDB debugger using the command quit. For example, type quit to exit.<\/li>\n<\/ol>\n

    Caution: Modifying variable values in GDB requires a certain understanding of the debugging process, proceed with caution to avoid program crashes or other errors.<\/p>\n","protected":false},"excerpt":{"rendered":"

    To change the value of a variable in Linux using GDB, you can follow these steps: To start the GDB debugger, the command format is: gdb executable file. For example, to debug an executable file named “example,” you can execute the command gdb example. To set a breakpoint in GDB, you can use the break […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[9793,19205,19207,13711,19206],"class_list":["post-14252","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-debugging-tips","tag-gdb","tag-gnu-debugger","tag-linux-debugging","tag-variable-modification"],"yoast_head":"\nModify Variables in GDB: Linux Debugging Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to change variable values in GDB debugger on Linux. 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