Created
September 19, 2012 23:07
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bash: give yourself useful recent directories with `cd` and `d` commands
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| #!/bin/bash | |
| # | |
| # Change directories, but with pushd functionality. | |
| # | |
| # 1) change to given directory. | |
| # 2) add that directory to the stack. | |
| # 3) delete any duplicates of it on the stack. | |
| # 4) delete stack above $MAX_DIR_STACK_SIZE | |
| # | |
| # Find full path for destination directory. | |
| if [ $# -eq 0 ]; then | |
| DIR="$HOME" | |
| elif [ $# -gt 1 ]; then | |
| echo "cd $@: TOO MANY ARGUMENTS ARGGHHH" >&2 | |
| return 1 | |
| elif [ "$1" = ".." ]; then | |
| DIR=`realpath ..` | |
| elif [ "$1" = "-" ]; then | |
| DIR=`realpath ~-` | |
| else | |
| DIR=`realpath "$1"` | |
| fi | |
| # Push directory. | |
| pushd $DIR >/dev/null || return $? | |
| # Remove duplicates. | |
| EXISTING=`dirs -l -v | grep " ${PWD}\$" | egrep -o "^\s*[1-9][0-9]*" | sort -nr` | |
| for NUM in $EXISTING; do | |
| NUM=`echo "$NUM" | tr -d ' '` | |
| popd -n +$NUM >/dev/null || return $? | |
| done | |
| # Truncate stack, if necessary. | |
| if [ "$MAX_DIR_STACK_SIZE" ]; then | |
| COUNT=`dirs -l -v -0 | awk '{print $1}'` | |
| while [ "$COUNT" -gt "$MAX_DIR_STACK_SIZE" ]; do | |
| popd -n -0 >/dev/null || return $? | |
| COUNT=$(( $COUNT - 1 )) | |
| done | |
| fi |
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| #!/bin/bash | |
| dirs -v | awk -F" " ' | |
| BEGIN { | |
| OFS=" " | |
| } | |
| { | |
| w='`tput cols`' | |
| xtra=length($0) - w | |
| if (xtra > 0) { | |
| plen = length($2) | |
| split($2,pieces,"/") | |
| pcount = length(pieces) | |
| postfix="/ ... /" pieces[pcount] | |
| remaining = length($2) - xtra - length(postfix) | |
| str = "" | |
| for (i = 2; i < pcount; i++) { | |
| remaining = remaining - length(pieces[i]) - 1 | |
| if (remaining > 0) { | |
| str = str "/" pieces[i] | |
| } | |
| } | |
| $2=str postfix | |
| } | |
| print $0 | |
| }' |
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| Recommend to add aliases in `~/.bashrc` to use this scripts. For example: | |
| alias cd='. ~/bin/cd-pushd.sh' | |
| alias d='. ~/bin/dirs-good' | |
| Causes, for example: | |
| $ d 0 ~/bin | |
| 1 ~ | |
| 2 /srv/www/project/ ... /long-directory-name | |
| 3 /srv/www/project/ ... /long-directory-name-2 | |
| 4 /srv/www/project/ ... /long-directory-name-3 | |
| which you can then switch to using tilde, e.g. | |
| $ cd ~4 | |
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