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Catch no args passed

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This commit is contained in:
Vlad Doster 2020-04-10 15:26:32 -05:00
parent f2713f45b6
commit 95d5d05075
1 changed files with 5 additions and 0 deletions
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5
.local/bin/delete_certain_known_hosts
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@ -1,5 +1,10 @@
#!/bin/bash #!/bin/bash
# Deletes certain lines of ~/.ssh/known_hosts # Deletes certain lines of ~/.ssh/known_hosts
if [ $# -eq 0 ]; then
echo "Usage: ./delete_certain_known_hosts 3 5 7 23"
echo "Will catch duplicate line numbers"
exit 1
fi
known_hosts_path=~/.ssh/known_hosts known_hosts_path=~/.ssh/known_hosts
lines_in_known_hosts=$(wc -l "$known_hosts_path" | awk '{print $1}') lines_in_known_hosts=$(wc -l "$known_hosts_path" | awk '{print $1}')
IFS=' ' IFS=' '