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Edit files using efficient Unix command-line tools instead of rewriting entire files
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Based on SOC occupation classification
| name | file-edit |
| description | Edit files using efficient Unix command-line tools instead of rewriting entire files |
Edit files using sed/awk/grep instead of rewriting entire contents. Use for targeted line changes, search-and-replace, or insertions.
macOS: BSD sed requires
sed -i ''; Linux GNU sed usessed -i.
sed -i 's/old/new/g' file.txt # replace all occurrences
sed -i '/pattern/s/old/new/g' file.txt # replace on matching lines only
sed -i '/pattern/d' file.txt # delete matching lines
sed -i '5d' file.txt # delete line 5
sed -i '10,20d' file.txt # delete lines 10-20
sed -i '/pattern/a\new line' file.txt # insert after match
sed -i '/pattern/i\new line' file.txt # insert before match
sed -i '1i\new first line' file.txt # prepend
echo 'content' >> file.txt # append
sed -n '5,10p' file.txt # extract lines 5-10
awk -F',' '{print $2}' file.txt # print 2nd CSV field
grep '^def ' main.py | sed 's/def //;s/(.*//' # extract function names
diff -u original.txt modified.txt > changes.patch
patch original.txt < changes.patch
cp file.txt file.txt.bak/, &, \)file-read skill to locate target lines before editingUse for math calculations.
Use for date/time.
Rules to minimize token usage
Native macOS built-in screen capture. Saves directly to ~/Desktop using exact system timestamp naming, so agent can automatically detect and read the latest screenshot without manual file paths. macOS only.
Maintain a living context document (plan.md) as a self-note to preserve the original agenda, track progress, and prevent context drift during complex tasks
A meta-skill to create new skills in the default skill directory with proper YAML front matter