Dimitre Radoulov questions

Dimitre Radoulov answers

• How do you use getopts?
• Enumerate substitutions with sed or awk
• Get a difference file by specific patterns in two text files
• Grep to multiple output files
• match values in first column of two files and join the matching lines in a new file
• Mysql ORDER BY numbers DESC
• Select random 3000 lines from a file with awk codes
• PostgreSQL and OS X Lion Permission Issues .bash_profile [closed]
• bash coproc and leftover coproc output
• How can you group consecutive lines in bash?