All commands mentioned here reflect for Suse Linux flavor:
File Commands:
1. ls =Directory listing
2. ls -al =Formatted listing with hidden files
3. ls -lt =Sorting the Formatted listing by time modification
4. cd dir =Change directory to dir
5. cd =Change to home directory
6. pwd =Show current working directory
7. mkdir dir =Creating a directory dir
8. cat >file =Places the standard input into the file
9. more file =Output the contents of the file
10. head file =Output the first 10 lines of the file
11. tail file =Output the last 10 lines of the file
12. tail -f file =Output the contents of file as it grows,starting with the last 10 lines
13. touch file =Create or update file
14. rm file =Deleting the file
15. rm -r dir =Deleting the directory
16. rm -f file =Force to remove the file
17. rm -rf dir =Force to remove the directory dir
18. cp file1 file2 =Copy the contents of file1 to file2
19. cp -r dir1 dir2 =Copy dir1 to dir2;create dir2 if not present
20. mv file1 file2 =Rename or move file1 to file2,if file2 is an existing directory
21. ln -s file link =Create symbolic link link to file
Process management:
1. ps =To display the currently working processes
2. top =Display all running process
3. kill pid =Kill the process with given pid
4. killall proc =Kill all the process named proc
5. pkill pattern =Will kill all processes matching the pattern
6. bg =List stopped or background jobs,resume a stopped job in the background
7. fg =Brings the most recent job to foreground
8. fg n =Brings job n to the foreground
File permission:
1. chmod octal file =Change the permission of file to octal,which can be found separately for user,group,world by adding,
• 4-read(r)
• 2-write(w)
• 1-execute(x)
2. chown =Change the owner of file system files, directories
Searching:
1. grep pattern file =Search for pattern in file
2. grep -r pattern dir =Search recursively for pattern in dir
3. command | grep pattern =Search pattern in the output of a command
4. locate file =Find all instances of file
5. find . -name filename =Searches in the current directory (represented by a period) and below it, for files and directories with names starting with filename
6. pgrep pattern =Searches for all the named processes , that matches with the pattern and, by default, returns their ID
System Info:
1. date =Show the current date and time
2. cal =Show this month's calender
3. uptime =Show current uptime
4. w =Display who is on line
5. whoami =Who you are logged in as
6. finger user =Display information about user
7. uname -a =Show kernel information
8. cat /proc/cpuinfo =Cpu information
9. cat proc/meminfo =Memory information
10. man command =Show the manual for command
11. df =Show the disk usage
12. du =Show directory space usage
13. free =Show memory and swap usage
14. whereis app =Show possible locations of app
15. which app =Show which applications will be run by default
Compression:
1. tar cf file.tar file =Create tar named file.tar containing file
2. tar xf file.tar =Extract the files from file.tar
3. tar czf file.tar.gz files =Create a tar with Gzip compression
4. tar xzf file.tar.gz =Extract a tar using Gzip
5. tar cjf file.tar.bz2 =Create tar with Bzip2 compression
6. tar xjf file.tar.bz2 =Extract a tar using Bzip2
7. gzip file =Compresses file and renames it to file.gz
8. gzip -d file.gz =Decompresses file.gz back to file
Network:
1. ping host =Ping host and output results
2. whois domain =Get whois information for domains
3. dig domain =Get DNS information for domain
4. dig -x host =Reverse lookup host
5. wget file =Download file
6. wget -c file =Continue a stopped download
Shortcuts:
1. ctrl+c =Halts the current command
2. ctrl+z =Stops the current command, resume with fg in the foreground or bg in the background
3. ctrl+d =Logout the current session, similar to exit
4. ctrl+w =Erases one word in the current line
5. ctrl+u =Erases the whole line
6. ctrl+r =Type to bring up a recent command
7. !! =Repeats the last command
8. exit =Logout the current session
9. clear =Clears the screen
File Commands:
1. ls =Directory listing
2. ls -al =Formatted listing with hidden files
3. ls -lt =Sorting the Formatted listing by time modification
4. cd dir =Change directory to dir
5. cd =Change to home directory
6. pwd =Show current working directory
7. mkdir dir =Creating a directory dir
8. cat >file =Places the standard input into the file
9. more file =Output the contents of the file
10. head file =Output the first 10 lines of the file
11. tail file =Output the last 10 lines of the file
12. tail -f file =Output the contents of file as it grows,starting with the last 10 lines
13. touch file =Create or update file
14. rm file =Deleting the file
15. rm -r dir =Deleting the directory
16. rm -f file =Force to remove the file
17. rm -rf dir =Force to remove the directory dir
18. cp file1 file2 =Copy the contents of file1 to file2
19. cp -r dir1 dir2 =Copy dir1 to dir2;create dir2 if not present
20. mv file1 file2 =Rename or move file1 to file2,if file2 is an existing directory
21. ln -s file link =Create symbolic link link to file
Process management:
1. ps =To display the currently working processes
2. top =Display all running process
3. kill pid =Kill the process with given pid
4. killall proc =Kill all the process named proc
5. pkill pattern =Will kill all processes matching the pattern
6. bg =List stopped or background jobs,resume a stopped job in the background
7. fg =Brings the most recent job to foreground
8. fg n =Brings job n to the foreground
File permission:
1. chmod octal file =Change the permission of file to octal,which can be found separately for user,group,world by adding,
• 4-read(r)
• 2-write(w)
• 1-execute(x)
2. chown =Change the owner of file system files, directories
Searching:
1. grep pattern file =Search for pattern in file
2. grep -r pattern dir =Search recursively for pattern in dir
3. command | grep pattern =Search pattern in the output of a command
4. locate file =Find all instances of file
5. find . -name filename =Searches in the current directory (represented by a period) and below it, for files and directories with names starting with filename
6. pgrep pattern =Searches for all the named processes , that matches with the pattern and, by default, returns their ID
System Info:
1. date =Show the current date and time
2. cal =Show this month's calender
3. uptime =Show current uptime
4. w =Display who is on line
5. whoami =Who you are logged in as
6. finger user =Display information about user
7. uname -a =Show kernel information
8. cat /proc/cpuinfo =Cpu information
9. cat proc/meminfo =Memory information
10. man command =Show the manual for command
11. df =Show the disk usage
12. du =Show directory space usage
13. free =Show memory and swap usage
14. whereis app =Show possible locations of app
15. which app =Show which applications will be run by default
Compression:
1. tar cf file.tar file =Create tar named file.tar containing file
2. tar xf file.tar =Extract the files from file.tar
3. tar czf file.tar.gz files =Create a tar with Gzip compression
4. tar xzf file.tar.gz =Extract a tar using Gzip
5. tar cjf file.tar.bz2 =Create tar with Bzip2 compression
6. tar xjf file.tar.bz2 =Extract a tar using Bzip2
7. gzip file =Compresses file and renames it to file.gz
8. gzip -d file.gz =Decompresses file.gz back to file
Network:
1. ping host =Ping host and output results
2. whois domain =Get whois information for domains
3. dig domain =Get DNS information for domain
4. dig -x host =Reverse lookup host
5. wget file =Download file
6. wget -c file =Continue a stopped download
Shortcuts:
1. ctrl+c =Halts the current command
2. ctrl+z =Stops the current command, resume with fg in the foreground or bg in the background
3. ctrl+d =Logout the current session, similar to exit
4. ctrl+w =Erases one word in the current line
5. ctrl+u =Erases the whole line
6. ctrl+r =Type to bring up a recent command
7. !! =Repeats the last command
8. exit =Logout the current session
9. clear =Clears the screen
No comments:
Post a Comment