| cut -d' ' -f5 foo | nl | pulls out fifth field from foo based on space-delimiting and numbers lines |
| paste filenames | pastes lines together, columnwise |
| xhost +machinename | allow machinename to open windows on your machine |
| talk user@machine | allows you to talk to user |
| wc filename | counts words, lines, characters in a file |
| mail -s "subject" user@machine < foo | mails contents of foo to user |
| metamail | in conjunction with mail program, converts and decodes attachments |
| perl -e 'while ($line=<>) {$line=s/\n//; print "<s> $line </s>\n";}' | command-line perl example |
| ctrl-alt-{+,-} | change screen resolution |
|---|---|
| ctrl-alt-F1 | gets out of X in linux |
| mount{umount} /mnt/cdrom | mount(unmount} a CD-rom on linux |
| tail -f file | shows the end of file, updating in real-time as file is appended to |