Shell Snippets

Shell

# Cut output text
cut -f 1 #First Column, tab delimiter
cut -d' ' -f 1  # Space delimiter
cut -f 5- # Columns after 5
cut -f -4,7- # Columns before 4 and after 7
cut -f 1,4,5 # Columns 1,4,5

# Remove First line
sed 1d
# Remove Last line
sed -i '$ d' foo.txt
#Replace text
sed -i 's/old-text/new-text/g' input.txt

# Helm2 delete all deployments
helm2 list | sed 1d | cut -f 1 | xargs | xargs helm2 delete --purge

# Diff between two folders
diff -rub ~ ./dotfiles

# Keep doing something
while true; do; k get deployments >> d.log; sleep 5 ; done

#jq
echo t.json | jq -r ".key" # -r prints without quotes

#base64 der to pem
curl -s https://webhookspo.pr.rightnow.com/AgentWeb/api/elementManager/authentication/publicCert | jq ".content" -r | base64 --decode | openssl x509 -inform der -pubkey -noout

Git

Public Keys: https://github.com/sidharthv96.keys

# No pager
git --no-pager diff

# Files changed between branches
git diff --name-only master #With Master
git diff --name-only HEAD~1 #Last commit
git diff --name-only HEAD~5 HEAD~10 #Last 5-10 commits

# Upstream
git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git
git fetch upstream
git merge upstream/master

Docker

#Override entrypoint
docker run -it --entrypoint /bin/bash [docker_image]