---
course_title: Intro to DH
title: Software Carpentry: Command line and Version control
week: Week 2
---

### Basics!

```
ls
cd
head
tail
```

### Cut tables, count lines, count values

```
cut -f11 2014-01_JA.tsv
cut -f11 2014-01_JA.tsv | wc -l
cut -f11 2014-01_JA.tsv | sort
cut -f11 2014-01_JA.tsv | uniq -c
cut -f11 2014-01_JA.tsv | sort | uniq -c
cut -f11 2014-01_JA.tsv | sed '/^$/d' | sort | uniq -c  
tail -n +2 2014-01_JA.tsv | cut -f11 | sed '/^$/d' | sort | uniq -c
```

### Search for gender in XML file

```
grep "Mr" *.xml
grep "Mr" *.xml | grep -v "Mrs"
grep "Mission" *.xml
grep "Mission" *.xml | grep "Miss"
grep -Ec "\bMrs\b" *.xml
grep -Evc "\bMrs\b" *.xml
grep -E "\bMrs\b" *.xml
grep -Ec "\bMrs\b|\bMiss\b" 
```

### Search for professions in XML file

```
grep "<addr>"  *.xml | grep -E "\bMrs\b|\bMiss\b" | grep -Eo ",[^,]+</addr>"
grep "<addr>"  *.xml | grep -Ev "\bMrs\b|\bMiss\b" | grep -Eo ",[^,]+</addr>" | sort | uniq -c | sort
grep "<addr>"  *.xml | grep -Ev "\bMrs\b|\bMiss\b" | grep -Eo ",[^,]+</addr>" | sort | uniq -c | sort -n
```

### Summarise tweet frequency:

```
cut -d' ' -f 1,2,3 tids-created_at.txt
cut -f2 -d, tids-created_at.txt | cut -f1,2,3 -d' '
cut -f2 -d, tids-created_at.txt | cut -f2,3,6 -d' ' | uniq -c
cut -f2 -d, tids-created_at.txt | cut -f2,3,6 -d' ' | sort | uniq -c
```

### Move and arrange a corpus of computer game ROMs

```
mkdir euro
find . -name "*Europe*" -exec mv {} ./euro/ \;
```