Cmdline

• Select column using awk and apply base64 for one of them:

cat file | awk -F ':' '{ "echo -n "$3" | base64" | getlline x
print $1, $2, x}'

Exemple:

$ cat a
plop:glou:coin:qweqwe
foo:bar:test:qweqwe

$ cat testfile.txt | awk -F ':' '{ "echo -n "$3" | base64" | getline x
print $1, $2, x}'
plop glou Y29pbg==
foo bar dGVzdA==

• Access environment variable (-v awk_var=env_var)

$ for a in $(seq 1 100)
do
nmap -p 25 --source-port $a www.example.com | grep tcp | awk -v var=$a '{print var ":" $1 ":" $2}'
done
1:25/tcp:open
2:25/tcp:open
3:25/tcp:open
4:25/tcp:open
5:25/tcp:open
6:25/tcp:open
7:25/tcp:filtered
8:25/tcp:open

tmux

copy - paste

• Enter copy mode: Ctrl + <prefix> + [
• Start selection: Ctrl+SPACE
• Move with keys
• Ctrl+w to copy into Tmux buffer
• In the same tmux, but could be different windows/pane, vim /tmp/mycopy, insert mode then Ctrl+<prefix> + ]

Search

• Enter copy mode: Ctrl + <prefix> + [
• Ctrl+s to type the string to search
• Enter search
• Shift-n for reverse search
• Shift-r for reverse direction

Create new session inside a session

• Ctrl + <prefix> :new -s <name>

swap panes

• Ctrl + <prefix> } swap-pane with the next one
• Ctrl + <prefix> { swap-pane with the previous one

move panes

• Ctrl + <prefix> :join-pane -s :1 bring active pane on window 1 to current window
• or
• Identify with Ctrl+ <prefix> + q then Ctrl + <prefix> :join-pane -s 1 bring pange 1 into the current space

zip

• list file in zip:

unzip -l <file.zip>
zip -sf <file.zip>

• extract one file from the zip:

unzip -p <file.zip> path/to/file > file
unzip -j <file.zip> path/to/file -d .

tar.gz

• list file in tar.gz

tar -tvf <file.tar.gz>

• compress with automatical detection of extension

tar -cvaf dir.tzst dir

• decompress with automatical detection of extension

tar -xvaf dir.tzst

zst

zstd -l <file.zst>