User Tools

Site Tools


Sidebar

projects

ntr0 (due 20210203)
pct1 (bonus; due 20210203)
wcp1 (due 20210203)
ngf0 (due 20210210)
pct2 (due 20210210)
wcp2 (due 20210210)
adm0 (due 20210217)
pct3 (bonus; due 20210217)
wcp3 (due 20210217)
ngf1 (due 20210224)
pct4 (bonus; due 20210224)
wcp4 (due 20210224)
pbx0 (due 20210303)
pct5 (bonus; due 20210303)
wcp5 (due 20210303)
ngf2 (due 20210310)
gfo0 (due 20210310)
pct6 (due 20210310)
wcp6 (due 20210310)
pbx1 (due 20210317)
pct7 (bonus; due 20210317)
wcp7 (due 20210317)
ngf3 (due 20210324)
pct8 (due 20210324)
wcp8 (due 20210324)
pbx2 (due 20210331)
gfo1 (due 20210331)
pct9 (bonus; due 20210331)
wcp9 (due 20210331)
ngf4 (due 20210407)
pctA (due 20210407)
wcpA (due 20210407)
ldg0 (due 20210414)
pctB (bonus; due 20210414)
wcpB (due 20210414)
ngf5 (due 20210421)
pctC (due 20210421)
wcpC (due 20210421)
gfo2 (due 20210428)
pctD (bonus; due 20210428)
wcpD (bonus; due 20210428)
pctE (bonus; due 20210505)
wcpE (bonus; due 20210505)
EoCE (due 20210512)
haas:spring2021:unix:worksheet0

UNIX Worksheet

File Permissions

For the following symbolic file permissions, give the corresponding octal value:

  • - r w x r - x r - x
  • d - w x - w - - - x
  • c r - - - w - - - x
  • b r w - r w - - w x

File Types

For the given file information, identify whether the indicated file is a regular, directory, or special file:

  • - r w x r - x r - x
  • d - w x - w - - - x
  • c r - - - w - - - x
  • b r w - r w - - w x

Modifying File Permissions based on File Types

For the following, give the chmod command that provides user with read and write (maintaining any existing execute), removes any read for group (preserving any existing write and execute), and adds world read. But ONLY if it is a special file.

  • - r w x r - x r - x
  • d - w x - w - - - x
  • c r - - - w - - - x
  • b r w - r w - - w x

Absolute vs. Relative Path

For the following, specify whether it is an absolute or relative path. Explain why:

  • /usr/local/bin
  • ../bin/fsck
  • bin/ls
  • /var/log/auth.log
haas/spring2021/unix/worksheet0.txt · Last modified: 2013/02/27 19:08 by 127.0.0.1