Now the senior dev knows exactly which file and date the logs came from. After debugging, the senior dev asks Alex to merge the chunks back into one file to run a full analysis script.
split -b 20M -d app_error.log app_error_20250115_part Outputs: app_error_20250115_part00 app_error_20250115_part01 …
split Act 1: Basic Splitting – One Giant File → Many Small Files Alex remembers the split command. The goal: break app_error.log into many small, manageable files.
So Alex uses :
cat app_error_part_* > app_error_rebuilt.log Because split preserves the original order (aa, ab, ac or 00,01,02), cat in the correct order rebuilds the original file perfectly.
ls -l error_part_* Then emails error_part_ files corresponding to the end of the log. By default, split uses alphabetic suffixes ( aa , ab , … zz ). Alex’s colleague prefers numbers for easier scripting.
To get only the last few chunks (containing the most recent logs), Alex lists them:
Here’s a helpful, practical story about using the split command in Linux. The Log File That Grew Too Large
Now the senior dev knows exactly which file and date the logs came from. After debugging, the senior dev asks Alex to merge the chunks back into one file to run a full analysis script.
split -b 20M -d app_error.log app_error_20250115_part Outputs: app_error_20250115_part00 app_error_20250115_part01 …
split Act 1: Basic Splitting – One Giant File → Many Small Files Alex remembers the split command. The goal: break app_error.log into many small, manageable files. linux split file
So Alex uses :
cat app_error_part_* > app_error_rebuilt.log Because split preserves the original order (aa, ab, ac or 00,01,02), cat in the correct order rebuilds the original file perfectly. Now the senior dev knows exactly which file
ls -l error_part_* Then emails error_part_ files corresponding to the end of the log. By default, split uses alphabetic suffixes ( aa , ab , … zz ). Alex’s colleague prefers numbers for easier scripting.
To get only the last few chunks (containing the most recent logs), Alex lists them: The goal: break app_error
Here’s a helpful, practical story about using the split command in Linux. The Log File That Grew Too Large