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@ -50,7 +50,7 @@ Compressing all Latex Files in /home/.
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> sudo find ~ -maxdepth 4 -name "*.txt" | xargs tar cvf latex-bundle.tar.gz
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## `zip
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## `zip`
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Install `zip`.
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@ -22,7 +22,7 @@ Regular expression characters include:
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As a result, grep cannot read these characters as literal characters unless they are escaped. E.g.
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> grep wtf\? log.txt
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> grep wtf\\? log.txt
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... will search the string 'wtf?' in the file log.txt. Another version is egrep (now used with 'grep -e') which uses more characters as special characters, or fgrep, which treats all characters as literal strings.
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@ -46,10 +46,20 @@ Export this to the entire system using:
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> export colour=blue
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# Search commands
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# Search for Programs
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Search for commands relevant to `cat`.
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> apropos cat
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Show files used in the `cat` program.
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> whereis cat
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Show *which* file is the actual code which runs when you type `cat`:
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> which cat
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# Working with Text
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Convert every tab to ten spaces.
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@ -76,9 +86,13 @@ The sort function arranges lines alphabetically. Use -r to reverse and -n to so
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# Sed
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> sed -i s/hey/hoi/g greetings.txt
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Change all examples of hey to hoi in greetings and show that output (does not change file).
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Edit all examples of hey to hoi in greetings and print that to the file.
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> sed 's/hey/hoi/g greetings.txt'
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Change each example of 'cat' to 'dog' in the file 'animals.md'.
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> sed 's/cat/dog/g' animals.md
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# Measurement
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@ -28,7 +28,7 @@ Download and extract the root filesystem (as root, not via sudo):
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Move boot files to the first partition:
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> mv root/boot/* boot
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> mv root/boot/\* boot
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> Unmount the two partitions:
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> umount boot root
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