Several shell questions

1. for I in $ (seq 0 9); do touch file $1; done
2. sort-k 1-t ': 'passwd | awk-F': ''{print $3": "$4": "$5 }'
3. diff-B file1 file2
4. isodump-I out. iso-x/media/cdrom; umount/media/cdrom # the usage of cdrom is not considered.
5. dd if =/dev/zero of = ~ /Outfile bs = 1G count = 1
6. ifconfig eth0
7. netstat-a | grep tcp
8. tar cjf/buckup/home.tar. bz/home | rm-f/buckup/home.tar. bz

Reply by referencing the author baby313:

1. Create file0, file1 ,... And file9 files.
2. Sort the/etc/passwd file by the first field separated by ":" and output the third row to the fifth line.
3. Compare whether the two files are the same (ignore empty rows ).
4. Create an iso file from the CD, and then pop up the CD.
5. Generate a 1 GB file.
6. display the NIC information of the system.
7. Count the total number of TCP connections in the current system.
8. Back up and compress all files in the/home directory. If the backup is successfully copied to the/backup Directory.

Use one statement for each question !!!