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linuxterminalcommands [2021/11/23 20:32]
john.nordlie created 		linuxterminalcommands [2021/11/23 20:36] (current)
john.nordlie
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 Compression Compression
 +
 Command Action Command Action
 +
 tar cf file.tar files create a tar named file.tar containing files tar cf file.tar files create a tar named file.tar containing files
 +
 tar xf file.tar extract the files from file.tar tar xf file.tar extract the files from file.tar
 +
 tar czf file.tar.gz files create a tar with Gzip compression tar czf file.tar.gz files create a tar with Gzip compression
 +
 tar xzf file.tar.gz extract a tar using Gzip tar xzf file.tar.gz extract a tar using Gzip
 +
 tar cjf file.tar.bz2 create a tar with Bzip2 compression tar cjf file.tar.bz2 create a tar with Bzip2 compression
 +
 tar xjf file.tar.bz2 extract a tar using Bzip2 tar xjf file.tar.bz2 extract a tar using Bzip2
 +
 gzip file compresses file and renames it to file.gz gzip file compresses file and renames it to file.gz
 +
 gzip -d file.gz decompresses file.gz back to file gzip -d file.gz decompresses file.gz back to file
 +
 +
 Disk Quotas Disk Quotas
  
-Disk Quota for your home directory (stored on Shell and available on the Streibel Hall Linux Images) is fairly high. We ask that you try to keep your home directory size to under 1 GB unless you have a specific course/research need for larger. 
 Command Action Command Action
 +
 du -s -h ~ returns the disk size of your home directory (and all files/folder within it) du -s -h ~ returns the disk size of your home directory (and all files/folder within it)
 +
 +
 File Commands File Commands
 +
 Command Action Command Action
 +
 ls directory listing ls directory listing
 +
 ls -al formatted listing with hidden files ls -al formatted listing with hidden files
 +
 cd change to home directory cd change to home directory
 +
 cd dir change directory to dir cd dir change directory to dir
 +
 pwd show current directory pwd show current directory
 +
 mkdir dir create a directory dir mkdir dir create a directory dir
 +
 rm file delete file rm file delete file
 +
 rm -r dir delete directory dir rm -r dir delete directory dir
 +
 rm -f file force remove file rm -f file force remove file
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 rm -rf dir force remove directory dir; – use with extreme caution – rm -rf dir force remove directory dir; – use with extreme caution –
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 cp file1 file2 copy file1 to file2 cp file1 file2 copy file1 to file2
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 cp -r dir1 dir2 copy dir1 to dir2; create dir2 if it doesn't exist cp -r dir1 dir2 copy dir1 to dir2; create dir2 if it doesn't exist
 +
 mv file1 file2 rename or move file1 to file2 if file2 is an existing directory; moves file1 into directory file2 mv file1 file2 rename or move file1 to file2 if file2 is an existing directory; moves file1 into directory file2
 +
 ln -s file link create symbolic link link to file ln -s file link create symbolic link link to file
 +
 touch file create or update file touch file create or update file
 +
 cat > file places standard input into file cat > file places standard input into file
 +
 more file output the contents of file more file output the contents of file
 +
 head file output the first 10 lines of file head file output the first 10 lines of file
 +
 tail file output the last 10 lines of file tail file output the last 10 lines of file
-tail -f file output the contents of file as it grows, starting witht he last 10 lines+ 
 +tail -f file output the contents of file as it grows, starting with the last 10 lines 
 + 
 File Permissions File Permissions
 +
 Command Command
 +
 chmod octal file chmod octal file
  
 Change the permissions of file to octal, which can be found spearately for user, group, and world by adding: Change the permissions of file to octal, which can be found spearately for user, group, and world by adding:
  
-    4 - read (r) +4 - read (r) 
-    2 - write (w) + 
-    1 - execute (x)+2 - write (w) 
 + 
 +1 - execute (x) 
  
 Examples: Examples:
  
-    chmod 777 - read, write, execute for all +chmod 777 - read, write, execute for all 
-    chmod 755 - rwx for owner, rx for group and world+ 
 +chmod 755 - rwx for owner, rx for group and world
  
 For more options, use command man chmod. For information on man see Linux Man (Manual) Pages. For more options, use command man chmod. For information on man see Linux Man (Manual) Pages.
 +
 +
 Installation Installation
 +
 Command Action Command Action
 +
 ./configure ./configure
 +
 make make
 +
 make install Install from source make install Install from source
 +
 dpkg -i pkg.deb install a package (Debian) dpkg -i pkg.deb install a package (Debian)
 +
 rpm -Uvh pkg.rpm install a package (RPM) rpm -Uvh pkg.rpm install a package (RPM)
 +
 +
 Network Network
 +
 Command Action Command Action
 +
 ping host ping host and output results ping host ping host and output results
 +
 whois domain get whois information for domain whois domain get whois information for domain
 +
 dig domain get DNS information for domain dig domain get DNS information for domain
 +
 dig -x host reverse lookup host dig -x host reverse lookup host
 +
 wget file download file wget file download file
 +
 wget -c file continue a stopped download wget -c file continue a stopped download
 +
 +
 Printing Printing
 +
 Command Action Command Action
 +
 lpr filename Print the specified file filename lpr filename Print the specified file filename
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 program | lpr -P printer Print output of the program program program | lpr -P printer Print output of the program program
 +
 lpr -#num-copies filename Print multiple copies of file filename lpr -#num-copies filename Print multiple copies of file filename
 +
 lpr -o sides-two-sided-long-edge filename Print file filename on both sides of paper lpr -o sides-two-sided-long-edge filename Print file filename on both sides of paper
 +
 lpr -o page-ranges=range filename Print page ranges range (ex: 1-4,7,9-12) from file filename lpr -o page-ranges=range filename Print page ranges range (ex: 1-4,7,9-12) from file filename
 +
 lpr -o fit-to-page filename Print file filename so it scales to the page lpr -o fit-to-page filename Print file filename so it scales to the page
 +
 lpr -o outputorder=reverse filename Print file filename in reverse order lpr -o outputorder=reverse filename Print file filename in reverse order
 +
 +
 Searching Searching
 +
 Command Action Command Action
 +
 grep pattern files search for pattern in files grep pattern files search for pattern in files
 +
 grep -r pattern dir search recursively for pattern in dir grep -r pattern dir search recursively for pattern in dir
 +
 command | grep pattern search for pattern in the output of command command | grep pattern search for pattern in the output of command
 +
 locate file find all instances of file locate file find all instances of file
 +
 +
 Shortcuts Shortcuts
  
 A (k) next to the command donates a keyboard command, not a typed command. A (k) next to the command donates a keyboard command, not a typed command.
 +
 Command Action Command Action
 +
 (k) Ctrl+C halts the current command (k) Ctrl+C halts the current command
 +
 (k) Ctrl+Z stops the current command, resume with fg in the foreground or bg in the background (k) Ctrl+Z stops the current command, resume with fg in the foreground or bg in the background
 +
 (k) Ctrl+D log out of current session, similar to exit (k) Ctrl+D log out of current session, similar to exit
 +
 (k) Ctrl+W erases one word in the current line (k) Ctrl+W erases one word in the current line
 +
 (k) Ctrl+U erases the whole line (k) Ctrl+U erases the whole line
 +
 (k) Ctrl+R  (k) Ctrl+R
 +
 !! repeats the last command !! repeats the last command
 +
 exit log out of current session exit log out of current session
 +
 +
 SSH SSH
 +
 Command Action Command Action
 +
 ssh user@host connect to host as user ssh user@host connect to host as user
 +
 ssh -p port user@host connect to host on port port as user ssh -p port user@host connect to host on port port as user
 +
 ssh-copy-id user@host add your key to host for user to enable a keyed or passwordless login ssh-copy-id user@host add your key to host for user to enable a keyed or passwordless login
 +
 +
 System Info System Info
 +
 Command Action Command Action
 +
 date show the current date and time date show the current date and time
 +
 cal show this month's calendar cal show this month's calendar
 +
 uptime show current uptime uptime show current uptime
 +
 w display who is online w display who is online
 +
 whoami who you are logged in as whoami who you are logged in as
 +
 finger user display information about user finger user display information about user
 +
 uname -a show kernel information uname -a show kernel information
 +
 cat /proc/cpuinfo cpu information cat /proc/cpuinfo cpu information
 +
 cat /proc/meminfo memory information cat /proc/meminfo memory information
 +
 man command shows the manual for command; see more @ Linux Man (Manual) Pages man command shows the manual for command; see more @ Linux Man (Manual) Pages
 +
 df show disk usage df show disk usage
 +
 du show directory space usage du show directory space usage
 +
 free show memory and swap usage free show memory and swap usage
 +
 wheris app show possible locations of app wheris app show possible locations of app
 +
 which app show which app will be run by default  which app show which app will be run by default 
linuxterminalcommands.1637699533.txt.gz · Last modified: 2021/11/23 20:32 by john.nordlie

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