Intermediate Unix - Revision history

WikiSysop at 15:22, 11 February 2026

2026-02-11T15:22:06Z

← Older revision		Revision as of 17:22, 11 February 2026
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	{\| width=500 style="font-size: 10px; float:right; margin-left: 10px; margin-top: -56px;"		{\| width=500 style="font-size: 10px; float:right; margin-left: 10px; margin-top: -56px;"
	\|Previous: [[Beginning Unix]]		\|Previous: [[Beginning Unix]]
	\|Next: [[~~Git on command line~~]]		\|Next: [[Solo git]]
	\|}		\|}

WikiSysop: /* Exercises to be handed in */

2026-02-04T08:36:19Z

Exercises to be handed in

← Older revision		Revision as of 10:36, 4 February 2026
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	Note: Data files can be found in the [[collection of files]].		Note: Data files can be found in the [[collection of files]].

	# Go back to exercise 2 & 3 in previous week. Check if the files are changed, using '''diff''' this time. First try '''diff''' directly after the copy. Then use '''nano''' to make a change in ''myfile.acc'' and use '''diff''' again. See the difference. Understand how the change is reflected in the output.		# Go back to exercise 2 & 3 in previous week. Check if the files are changed, using '''diff''' this time. First try '''diff''' directly after the copy. Then use '''nano''' to make a change in ''myfile.acc'' and use '''diff''' again. See the difference. Understand how the change is reflected in the output. For the complete picture try with 3 different changes: The adding of a line, the deleting of a line, and the change of a line. You might even do several changes.
	# In the ''myfile.acc'' (copy of ''ex1.acc'') change all occurrences of SPC to BLNK, using '''sed'''. Check if the files are changed, using '''diff'''.		# In the ''myfile.acc'' (copy of ''ex1.acc'') change all occurrences of SPC to BLNK, using '''sed'''. Check if the files are changed, using '''diff'''.
	# What is the path to the '''bash''' command?		# What is the path to the '''bash''' command?

WikiSysop: /* Exercises to be handed in */

2026-02-04T08:32:58Z

Exercises to be handed in

← Older revision		Revision as of 10:32, 4 February 2026
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	Note: Data files can be found in the [[collection of files]].		Note: Data files can be found in the [[collection of files]].

	# Go back to exercise 2 & 3 in previous week. Check if the files are changed, using '''diff''' this time.		# Go back to exercise 2 & 3 in previous week. Check if the files are changed, using '''diff''' this time. First try '''diff''' directly after the copy. Then use '''nano''' to make a change in ''myfile.acc'' and use '''diff''' again. See the difference. Understand how the change is reflected in the output.
	# In the ''myfile.acc'' (copy of ''ex1.acc'') change all occurrences of SPC to BLNK, using '''sed'''. Check if the files are changed, using '''diff'''.		# In the ''myfile.acc'' (copy of ''ex1.acc'') change all occurrences of SPC to BLNK, using '''sed'''. Check if the files are changed, using '''diff'''.
	# What is the path to the '''bash''' command?		# What is the path to the '''bash''' command?

WikiSysop: /* Preparation for next week */

2026-02-03T16:00:00Z

Preparation for next week

← Older revision		Revision as of 18:00, 3 February 2026
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	== Preparation for next week ==		== Preparation for next week ==
	You must create a github account if you do not have one already. Please consider a professional choice of username as it will follow you for a long time.<br>		You must create a github account if you do not have one already. Please consider a professional choice of username as it will follow you for a long time.<br>
	Sign up here: [https://github.com/ https://github.com/]		Sign up here: [https://github.com/ https://github.com/] Top right corner.

	== Exercises to be handed in ==		== Exercises to be handed in ==

WikiSysop at 15:59, 3 February 2026

2026-02-03T15:59:03Z

← Older revision		Revision as of 17:59, 3 February 2026
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	== Required course material for the lesson ==		== Required course material for the lesson ==
	Powerpoint: [https://teaching.healthtech.dtu.dk/material/22118/22118_01-Unix.ppt Introduction to Unix]<br>		Powerpoint: [https://teaching.healthtech.dtu.dk/material/22118/22118_01-Unix.ppt Introduction to Unix]<br>

			== Subjects covered ==
			* New Unix commands
			* Scripting in bash

	== Preparation for next week ==		== Preparation for next week ==
	You must create a github account if you do not have one already. Please consider a professional choice of username as it will follow you for a long time.<br>		You must create a github account if you do not have one already. Please consider a professional choice of username as it will follow you for a long time.<br>
	Sign up here: [https://github.com/ https://github.com/]		Sign up here: [https://github.com/ https://github.com/]

	~~== Subjects covered ==~~
	* New Unix commands
	* Scripting in bash

	== Exercises to be handed in ==		== Exercises to be handed in ==

WikiSysop: /* Preparation for next week */

2026-02-03T15:58:19Z

Preparation for next week

← Older revision		Revision as of 17:58, 3 February 2026
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	== Preparation for next week ==		== Preparation for next week ==
	You must create a github account if you do not have one already.<br>		You must create a github account if you do not have one already. Please consider a professional choice of username as it will follow you for a long time.<br>
	Sign up here: [https://github.com/ https://github.com/]		Sign up here: [https://github.com/ https://github.com/]

WikiSysop: /* Required course material for the lesson */

2026-02-03T15:57:11Z

Required course material for the lesson

← Older revision		Revision as of 17:57, 3 February 2026
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	== Required course material for the lesson ==		== Required course material for the lesson ==
	Powerpoint: [https://teaching.healthtech.dtu.dk/material/22118/22118_01-Unix.ppt Introduction to Unix]<br>		Powerpoint: [https://teaching.healthtech.dtu.dk/material/22118/22118_01-Unix.ppt Introduction to Unix]<br>

			== Preparation for next week ==
			You must create a github account if you do not have one already.<br>
			Sign up here: [https://github.com/ https://github.com/]

	== Subjects covered ==		== Subjects covered ==

WikiSysop: /* Exercises to be handed in */

2026-02-03T15:39:13Z

Exercises to be handed in

← Older revision		Revision as of 17:39, 3 February 2026
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	# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.		# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.
	# Last week you made the ''ex1.tot'' file in exercise 18. Using that file as input, write a bash shell script which finds the highest number in each number column and writes the corresponding swissprot identifier into the file ''highest.txt''. That file should contain exactly 3 identifiers - one on each line.		# Last week you made the ''ex1.tot'' file in exercise 18. Using that file as input, write a bash shell script which finds the highest number in each number column and writes the corresponding swissprot identifier into the file ''highest.txt''. That file should contain exactly 3 identifiers - one on each line.
			# Same as previous exercise, except this time you need the identifiers for the second highest number and the output file is called ''2highest.txt''.
	# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.		# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.

	== Exercises for extra practice ==		== Exercises for extra practice ==

WikiSysop: /* Exercises to be handed in */

2026-02-03T15:36:19Z

Exercises to be handed in

← Older revision		Revision as of 17:36, 3 February 2026
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	# Write a bash shell script that solves exercise 19-24 from last week, with the exercises clearly separated and explained in both the script and the output. "42" is unclear, but "Number of genes: 42" is clear. This should be straight forward (but long), especially since you wrote down what you did.		# Write a bash shell script that solves exercise 19-24 from last week, with the exercises clearly separated and explained in both the script and the output. "42" is unclear, but "Number of genes: 42" is clear. This should be straight forward (but long), especially since you wrote down what you did.
	# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.		# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.
	# Last week you made the ''ex1.tot'' file in exercise 18. Using that file as input, write a bash shell script which finds the highest number in each number column and writes the corresponding swissprot identifier into the file ''highest.txt''. That file should contain exactly 3 identifiers.		# Last week you made the ''ex1.tot'' file in exercise 18. Using that file as input, write a bash shell script which finds the highest number in each number column and writes the corresponding swissprot identifier into the file ''highest.txt''. That file should contain exactly 3 identifiers - one on each line.
	# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.		# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.

	== Exercises for extra practice ==		== Exercises for extra practice ==

WikiSysop: /* Exercises to be handed in */

2026-02-03T15:35:31Z

Exercises to be handed in

← Older revision		Revision as of 17:35, 3 February 2026
Line 24:		Line 24:
	# Write a bash shell script that solves exercise 19-24 from last week, with the exercises clearly separated and explained in both the script and the output. "42" is unclear, but "Number of genes: 42" is clear. This should be straight forward (but long), especially since you wrote down what you did.		# Write a bash shell script that solves exercise 19-24 from last week, with the exercises clearly separated and explained in both the script and the output. "42" is unclear, but "Number of genes: 42" is clear. This should be straight forward (but long), especially since you wrote down what you did.
	# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.		# Write a bash shell script that puts all the positive numbers in the file ''ex1.dat'' into a file ''ex1.pos2'', and all the negative numbers into a file ''ex1.neg2''. Column position does not matter. The script must clean up after itself, so if any temporary files are used, they must be deleted as the last action. Put the date and a description of the files in the first lines of the resulting output files.
	# ~~Write~~ a bash shell script		# Last week you made the ''ex1.tot'' file in exercise 18. Using that file as input, write a bash shell script which finds the highest number in each number column and writes the corresponding swissprot identifier into the file ''highest.txt''. That file should contain exactly 3 identifiers.

	# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.		# Write a bash shell script that calculates the total number of lines for all files in the directory mentioned on the command line as argument. No argument means current directory. Misleading hint: '''cut''' can split on other than tab.

	== Exercises for extra practice ==		== Exercises for extra practice ==