Terminal commands

About

NOTE: This page is a daughter page of: Unix

If you're like me you're always forgetting the format and arguments of useful Unix commands like chmod, find, grep and so on.... so here I've compiled a list of some useful examples of commands I often forget.

Child Pages

Related/Child Pages:

• Terminal - envsubst command
• Terminal - awk command
• Terminal - sed command
• Terminal - join command

Commands

man

• man grep
  • Displays the man (manual) page for the command "grep". From here use the keys:
  • [f] go forward one screen, [b] go back one screen, [q] exit back to command prompt

ls

• ls -la
  • List all files in current directory in "long list" format - letting you see permissions and file sizes (and a shows hidden files).

find

• find . -name "myfile.txt"
  • Finds all files named "myfile.txt" in the current directory

grep

• grep "unix" *.htm
  • search all .htm files in the current directory for any reference of unix

chmod

• chmod -R 777 directory
  • Allows everyone (user[u], group[g] and world[a]) read[r], write[w] and execute[x] permission
• chmod a+rw myfile.htm
  • Gives read and write permission to everyone

kill

• kill -9 1734
  • Run top to get process id '1734' then terminate it - the '-9' makes it more powerful

Programs

pico

• pico ~/.cshrc
  • Opens the file"~/.cshrc" for editing (even if the file doesn't exist). Once open use the commands:
  • [ctrl+o] to save (write out)
  • [ctrl+x] to exit

See Also

• Unix scripts

Links

• Unix Commands Reference Sheet - 2 page PDF which I keep above my desk
• UNIX Quick Reference Sheet - 4 page PDF
• Treebeard's Unix Cheat Sheet - good page