Bash – Current directory abbreviation rule in shell prompt

bashpromptworking directory

Sometimes I see that the current working directory in shell prompt is abbreviated and sometimes not.

For example /usr/bin will be displayed as bin$ or /folder1/folder2 displayed as folder2$, in other cases I have seen /folder1/folder2 displayed as full /folder1/folder2$

I am using default terminal settings (I am using Fedora 22 virtual machine for learning, but I also notice this fact in several other tutorial videos using different distro)

Is there any rule?

Best Answer

Another way to shorten the path, if you use \w is with the PROMPT_DIRTRIM shell variable. A demo:

jackman@b7q9bw1:/usr/local/share/doc $ echo "$PS1"
\u@\h:\w \$ 
jackman@b7q9bw1:/usr/local/share/doc $ pwd
/usr/local/share/doc
jackman@b7q9bw1:/usr/local/share/doc $ PROMPT_DIRTRIM=2
jackman@b7q9bw1:.../share/doc $ pwd
/usr/local/share/doc
jackman@b7q9bw1:.../share/doc $

Related Solutions

Bash – Abbreviated current directory in shell prompt

Try this:

PROMPT_COMMAND='PS1X=$(perl -pl0 -e "s|^${HOME}|~|;s|([^/])[^/]*/|$""1/|g" <<<${PWD})'

or, pure bash:

PROMPT_COMMAND='PS1X=$(p="${PWD#${HOME}}"; [ "${PWD}" != "${p}" ] && printf "~";IFS=/; for q in ${p:1}; do printf /${q:0:1}; done; printf "${q:1}")'

then

PS1='\u@\h ${PS1X} $ '

produces (notice the ~ for ${HOME}):

rfkrocktk@work-laptop ~/D/P/W/m/s/m/j/c/tkassembled $

I improved my answer thanks to @enzotib's

Current directory ./ in qsub

Batch jobs submitted by qsub are executed in your home directory by default.

Some versions of qsub support the -d option to specify a different directory. To execute the script in the same directory where you ran qsub, use

qsub -d "$PWD" -q hpc-pool ./myScript.sh

If the -d option is not available, you can access the directory where you ran qsub in your script, in the PBS_O_WORKDIR variable. So add this line near the beginning of your script:

cd "$PBS_O_WORKDIR" || exit $?

Best Answer

Related Solutions

Bash – Abbreviated current directory in shell prompt

Current directory ./ in qsub

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