Shell & Bash

71 commands

history history 20 !42 !!!string history -c Ctrl+R alias ll='ls -la'alias unalias ll source ~/.bashrc . ~/.bashrc export VAR=value export PATH=$PATH:/new/dir env env VAR=value command set set -e set -u set -x set -o pipefail unset VAR declare -i num=5 declare -r CONST=value declare -a arr=(a b c)declare -A map declare -x VAR readonly VAR=value local var=value type command which command whereis command whatis command command -v cmd builtin cd shopt -s globstar shopt -s nullglob shopt bind -l bind '"\C-f": forward-word'complete -W 'opt1 opt2' mycmd compgen -c compgen -b compgen -a trap 'cleanup' EXIT trap 'handler' SIGINT wait wait $!exec bash eval "echo \$VAR"shift shift 2 getopts 'ab:' opt read -p 'Enter value: ' VAR read -s -p 'Password: ' PASS read -a arr mapfile -t lines < file.txt printf '%s\n' item1 item2 echo -e 'line1\nline2'echo -n 'no newline'cat << EOF cat <<- EOF echo $?echo $$echo $!echo ${VAR:-default}echo ${#VAR}echo ${VAR^^}echo ${VAR,,}echo ${VAR/old/new}echo ${VAR//old/new}

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