Python upgrade venv python binary/version
karlo python3 -m venv --upgrade /opt/venv/
CLI and tools
Git use different ssh key once
export GIT_SSH_COMMAND="ssh -o IdentitiesOnly=yes -i ~/.ssh/id_rsa_blah" git push
Upgrade postgresql cluster from 13 to 15
apt list --installed | grep postg pg_dropcluster 15 main --stop pg_upgradecluster 13 main service postgresql@13-main stop service postgresql@15-main start pg_lsclusters pg_dropcluster 13 main apt-get purge postgresql-13 postgresql-client-13
Add a simple password to apache site
To add a password to your site:
SSH in for loop (consuming stdin / using file descriptor 3)
Ever found yourself using a for/while loop using SSH in the loop, only to find out your loop only runs once? Your stdin is captured by ssh… This can be…
Bash clear tmp files (for script) on exit (trap)
TMP="$(mktemp -d)" trap 'rm -rf -- "$TMP"' EXIT
Friendly (ionice/nice) rsync on remote server
Add --rsync-path="ionice -c 3 nice rsync" to your rsync command (on sending side) Friendly for both sender and receiver: ionice -c3 nice rsync --rsync-path="ionice -c 3 nice rsync"
jq unix timestamp to datetime
| todateiso8601
Bash script template
More info and source: https://sharats.me/posts/shell-script-best-practices/
Bash remove spaces from file names
find . -depth -name '* *' \ | while IFS= read -r f ; do mv -i "$f" "$(dirname "$f")/$(basename "$f"|tr ' ' _)" ; done
Upgrade dumb shell to interactive shell (tty)
python -c ‘import pty; pty.spawn(“/bin/bash”)’ yay python
Bash sort IPs naturally
sort -t . -k 3,3n -k 4,4n IPs
bash add IP in PWD to variable for easy reference
Add to .bashrc: export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND ;} ip=\$( echo \$PWD | grep -oE '{1,3}\.{1,3}\.{1,3}\.{1,3}' ) " Now if you browse to/in a directory which has an ipv4 ip, the IP will…
Easy AutoRecon summary (bash)
echo "===SUMMARY===";grep . */report/notes.txt| while read line; do IP=$( echo -ne $line|cut -d'/' -f1| tr -d '\n' ); ] && echo; echo -n $IP ; echo -n $line | cut…
Proxychains on fedora / centos7
Clone the repo: ./configure && make && sudo make install cp src/proxychains.conf /etc/proxychains.conf && vi /etc/proxychains.conf echo “alias p=’/usr/local/bin/proxychains4′” >> ~/.bashrc && . .bashrc p ssh xx@ip
Bash while loop input (stdin reading from while-input) fix
while read line <&3; do echo “==== $line ====”; yes y | sqlmap -u http://$line/ –crawl=1; read -p press\ enter; done 3< webservers.ip Using input 3 to read your list,…
Bash array operations and examples
Split to array: while IFS=’;’ read -ra ADDR; do for i in “${ADDR}”; do # process “$i” done done <<< “$IN” Define: distro=(“redhat” “debian” “gentoo”) Element: ${ArrayName} Length: echo “${#distro}”…
Bash color variables
# Reset Color_Off='\033
Bash add UTF8 (UTF-8) BOM to file
sed -i '1s/^\(\xef\xbb\xbf\)\?/\xef\xbb\xbf/' foo-*
Tail: prepend file name to tailing output (bash)
cd /opt/arcsight/connectors/; tail -f *_con1_rsyslog_paloalto_2500*/current/logs/agent.out.wrapper.log | awk '/^==> / {a=substr($0, 5, length-8); next} {print a":"$0}'
Personal (manual) template for internal hosts
This might help someone else, too. These are the things I do for an internal VM (on my hypervisor at home). This document will/might evolve over time. Default OS is…
Bash suppress all output of script (echo off – style)
exec 1>/dev/null 2>/dev/null at the top of your script
Bash compound commands (()){{}}{}[[]]
Compound Commands A compound command is one of the following. In most cases a list in a command's description may be separated from the rest of the command by one…
Bash inline number increase (( ++i ))
i=0 (( ++i )) echo $i Will give 1
Run programs without execute rights on file
/bin/bash script.sh /lib64/ld-linux-x86-64.so.2 binary.bin /usr/bin/php file.php
Bash keyboard shortcuts
Found here: http://ss64.com/bash/syntax-keyboard.html Bash Keyboard Shortcuts Moving the cursor: Ctrl + a Go to the beginning of the line (Home) Ctrl + e Go to the End of the line…
Self extracting zipped encrypted linux package
#!/bin/bash T=`mktemp -d /tmp/$$XXXX`;trap "rm -rf $T" EXIT SIGINT; tail -n+3 $0|openssl enc -d -aes-256-cbc|tar zx -C $T;C=`pwd`; cd $T;./_;cd $C;exit 0 build: #!/bin/bash find . -name "*~" -delete TMP=`mktemp…
Bash percentage calculate snippet
MEMLINE=$( tac $MGRBASE/$REL_LOGLOC/server.status.log | egrep -m1 '\*\*.*Memory Status:' ) USED=$( echo "$MEMLINE" | egrep -o '+ MB Used' | sed 's/\..*//;s/,//' ) MAX=$( echo "$MEMLINE" | egrep -o '+ MB…
Bash file age check snippet
if ]; then #Check age if ]; then echo "Backup takes too long" else echo "Doing backup" fi fi