basicsys@mars~>tree lec2 lec2 |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files basicsys@mars~>cat lec2/dir2/dir3/F1 I am F1 in dir2/dir3 aaa bbb basicsys@mars~>cd lec2 basicsys@mars~/lec2>cat lec2/dir2/dir3/F1 cat: lec2/dir2/dir3/F1: No such file or directory basicsys@mars~/lec2>cat ~/lec2/dir2/dir3/F1 I am F1 in dir2/dir3 aaa bbb basicsys@mars~/lec2>cd .. basicsys@mars~>cat ~/lec2/dir2/dir3/F1 I am F1 in dir2/dir3 aaa bbb basicsys@mars~>pwd /home/cs/segel/basicsys basicsys@mars~>cat /home/cs/segel/basicsys/lec2/dir2/dir3/F1 I am F1 in dir2/dir3 aaa bbb basicsys@mars~>tree /home/cs/segel/basicsys/lec2 /home/cs/segel/basicsys/lec2 |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files basicsys@mars~>tree ~/lec2 /home/cs/segel/basicsys/lec2 |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files yaisomer@mars~>tree . |-- ex2 | `-- P2.1 `-- udi |-- F1 |-- F2 |-- P1 |-- P1.1 |-- P1.2 |-- P1.3 `-- P1.4 2 directories, 8 files basicsys@mars~>tree ~yaisomer /home/cs/y11/yaisomer |-- ex2 [error opening dir] `-- udi [error opening dir] 2 directories, 0 files basicsys@mars~>cat ~yaisomer/ex2/P2.1 cat: /home/cs/y11/yaisomer/ex2/P2.1: Permission denied basicsys@mars~/lec2>ls -l total 12 drwx------ 3 basicsys basicsys 4096 Nov 4 17:21 dir2 -rw------- 1 basicsys basicsys 4 Nov 9 09:26 F2 -rw------- 1 basicsys basicsys 12 Nov 4 22:09 FFF basicsys@mars~/lec2>ls -ld drwx------ 3 basicsys basicsys 4096 Nov 9 09:25 . basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files basicsys@mars~/lec2>tree . . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 3 directories, 8 files basicsys@mars~/lec2>cp FFF dir2/dir3/dir4/FFF1 basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- dir4 | |-- F2 | |-- F8 | |-- FFF1 | `-- ff `-- ff 3 directories, 9 files basicsys@mars~/lec2>cat FFF abc def 123 basicsys@mars~/lec2>cat dir2/dir3/dir4/FFF1 abc def 123 basicsys@mars~/lec2>cp F2 dir2/dir3/dir4/F8 dir2/dir3 basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- F2 |-- F8 |-- dir4 | |-- F2 | |-- F8 | |-- FFF1 | `-- ff `-- ff 3 directories, 11 files basicsys@mars~/lec2>rm -i dir2/dir3/dir4/F2 dir2/dir3/dir4/F8 rm: remove regular file `dir2/dir3/dir4/F2'? n rm: remove regular file `dir2/dir3/dir4/F8'? n basicsys@mars~/lec2>rm -i dir2/dir3/dir4/F[28] rm: remove regular file `dir2/dir3/dir4/F2'? y rm: remove regular file `dir2/dir3/dir4/F8'? y basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F1 |-- F2 |-- F8 |-- dir4 | |-- FFF1 | `-- ff `-- ff 3 directories, 9 files basicsys@mars~/lec2>rm dir2/dir3/F[18] basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F2 |-- dir4 | |-- FFF1 | `-- ff `-- ff 3 directories, 7 files basicsys@mars~/lec2>cp -r dir2/dir3/dir4 dir2 basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 |-- dir3 | |-- F2 | |-- dir4 | | |-- FFF1 | | `-- ff | `-- ff `-- dir4 |-- FFF1 `-- ff 4 directories, 9 files basicsys@mars~/lec2>rm -r dir2/dir4 basicsys@mars~/lec2>tree . |-- F2 |-- FFF `-- dir2 |-- F1 `-- dir3 |-- F2 |-- dir4 | |-- FFF1 | `-- ff `-- ff 3 directories, 7 files basicsys@mars~/lec2>cp -r dir2/dir3/dir4 dir7 basicsys@mars~/lec2>tree . |-- F2 |-- FFF |-- dir2 | |-- F1 | `-- dir3 | |-- F2 | |-- dir4 | | |-- FFF1 | | `-- ff | `-- ff `-- dir7 |-- FFF1 `-- ff 4 directories, 9 files basicsys@mars~/lec2/dir2>tree . |-- F1 `-- dir3 |-- F1 |-- F2 |-- F8 |-- dir4 | |-- F2 | |-- F8 | `-- ff `-- ff 2 directories, 8 files basicsys@mars~/lec2/dir2>mv dir3/F1 dir3/dir4/F13 basicsys@mars~/lec2/dir2>tree . |-- F1 `-- dir3 |-- F2 |-- F8 |-- dir4 | |-- F13 | |-- F2 | |-- F8 | `-- ff `-- ff 2 directories, 8 files basicsys@mars~/lec2/dir2>tree . |-- F1 `-- dir3 |-- F2 |-- F8 |-- dir4 | |-- F13 | `-- ff `-- ff 2 directories, 6 files basicsys@mars~/lec2/dir2>mv dir3/F2 dir3/F8 dir3/dir4 basicsys@mars~/lec2/dir2>tree . |-- F1 `-- dir3 |-- dir4 | |-- F13 | |-- F2 | |-- F8 | `-- ff `-- ff 2 directories, 6 files Instructions on how to send e-mail ---------------------------------- 1) first form is as follows: basicsys@mars~>mail maya.greber@gmail.com Subject: hello something bad asddsaas . Cc: 2) second form is to write the message in a file, for example FFF and then send the mail as follows: basicsys@mars~/lec2>mail -s "hello" rotics6@gmail.com < FFF 3) third form is to write pine and then use it to send and read e-mails. pine is like pico and it is easy to learn how to use it. Instructions on how to transfer the e-mail you get to other e-mails ------------------------------------------------------------------- Using pico you can create a file with name .forward that will contain a list of e-mails separated by comma and space. Every message recieved to your e-mail in mars will be transfered to these e-mails. If you want to keep a copy of the e-mail you get on mars in your e-mail in mars, write \login-name in the list of e-mails. Note that the .forward file must be at your home directory!!! For example the .forward file of ~rotics is as follows: rotics@mars~>cat .forward \rotics, rotics@netanya.ac.il This means that every message rotics gets on his e-mail on mars which is rotics@mars.netanya.ac.il is transfered to the e-mail address rotics@netanya.ac.il and a copy is kept on the e-mail in mars of rotics.