Changed seq to bash {..}
replaced cat x > y with cp x y
Removed cat x | before grep
Removed cat x | before sed
Removed cat x | before cut
Removed cat x | before sort
Removed cat x | before fmt
Removed useless cat - | in view_file()
Use < x in favor of cat x
Combine grep and sed
Use grep with --include
Combine sed and grep
Place stdin redirect behind the command
Combine sort and uniq
Combined awk and tr (tolower)
Removed unnecessary awk
Replace awk with cut
Replace awk with grep
Replace awk with bash
Replace awk with sed