I use a command in a script for AIX and RHEL:
cd - 1>&2 >/dev/null
I know that this is trying to go back to the previous directory after changing to another directory.
While the exact same logic works for AIX and RHEL, it’s apparently not quite working on Solaris, with the error that I got implying that there’s no previous directory to go back to, when in fact the script had change the directory to /etc/opt/esmsym.
How to make this work on Solaris?
Do you have an alternative?
try running:
cd $OLDPWD
That should take you back to the previous working directory.
Or, if that doesn't work then you could try using this:
export path=$(pwd)
cd ~/B/
cd $path
This saves a copy of the current path to the $path variable and then changes the current directory to ~/B/ and then uses the $path variable to return the to previous working directory.
Just as a side-note, there's also podp and pushd
pushd $(pwd)
cd /tmp
popd
Taken from popd(1):
pushd pushes a directory onto the directory stack. With no arguments, exchange the top two elements.
+n
Rotate the n’th entry to the top of the stack and cd to it.
dir
Push the current working directory onto the stack and change to dir.
popd pops the directory stack and cd to the new top directory. The elements of
the directory stack are numbered from 0 starting at the top.
+n
Discard the n’th entry in the stack.
Related
I'm unable to use the rm command to remove files remotely from another directory. I'm a beginner so I apologise for my inability to elaborate properly.
Here's what I'm trying to do:
I'm trying to delete all .srt files from a sub directory. It works when I cd into the specific directory like so:
Command 1:
cd /users/jakubdonovan/library/cloudstorage/iCloud\ drive/the-modern-python3-bootcamp/target_folder
Command 2:
rm *.srt
However, let's say I want to quickly delete a specific file type from a folder without first using the "cd" command, like so:
rm *.srt /users/jakubdonovan/library/cloudstorage/iCloud\ drive/the-modern-python3-bootcamp/target_folder
It returns with "No matches for wildcard '*.srt'. See help expand."
Which is strange because I can use the touch, cp and and all the other commands remotely without a problem.
Is there a way to make the command "rm *.filetype" remove all the files with that specific filetype from a folder and all its subfolders in one swoop?
If you would like to rm in a sub-directory you just have to specify that sub-directory in the command.
rm /path/to/folder/*.filetype
or if you know that the folder is inside your current directory you can try...
rm ./folder/*.filetype
I often want to return to the previous directory I was just in in cmd.exe, but windows does not have the "cd -" functionality of Unix. Also typing cd ../../.. is a lot of typing.
Is there a faster way to go up several directory levels?
And ideally return back afterwards?
This worked for me in powershell
cd ..
Steps:
pushd . (Keep old folder path on the stack)
cd ..\.. (Move to the folder whare you like to)
popd (Pop it from the stack. Meaning, Come back to the old folder)
On Windows CMD, I got used to using pushd and popd. Before changing directory I use pushd . to put the current directory on the stack, and then I use cd to move elsewhere. You can run pushd as often as you like, each time the specified directory goes on the stack. You can then CD to whatever directory, or directories , that you want. It does not matter how many times you run CD. When ready to return , I use popd to return to whatever directory is on top of the stack. This is suitable for simple use cases and is handy, as long as you remember to push a directory on the stack before using CD.
Run cmd.exe using the /k switch and a starting batch file that invokes doskey to use an enhanced versions of the cd command.
Here is a simple batch file to change directories to the first parameter (%1) passed in, and to remember the initial directory by calling pushd %1.
md_autoruns.cmd:
#echo off
cd %1
pushd %1
title aliases active
cls
%SystemRoot%\System32\doskey.exe /macrofile=c:\tools\aliases
We will also need a small helper batch file to remember the directory changes and to ignore changes to the same directory:
mycd.bat:
#echo off
if '%*'=='' cd & exit /b
if '%*'=='-' (
cd /d %OLDPWD%
set OLDPWD="%cd%"
) else (
cd /d %*
if not errorlevel 1 set OLDPWD="%cd%"
)
And a small aliases file showing what to do to make it all work:
aliases:
cd=C:\tools\mycd.bat $*
cd\=c:\tools\mycd.bat ..
A:=c:\tools\mycd.bat A:
B:=c:\tools\mycd.bat B:
C:=c:\tools\mycd.bat C:
...
Z:=c:\tools\mycd.bat Z:
.=cd
..=c:\tools\mycd.bat ..
...=c:\tools\mycd.bat ..\..
....=c:\tools\mycd.bat ..\..\..
.....=c:\tools\mycd.bat ..\..\..\..
......=c:\tools\mycd.bat ..\..\..\..\..
.......=c:\tools\mycd.bat ..\..\..\..\..\..
........=c:\tools\mycd.bat ..\..\..\..\..\..\..
.........=c:\tools\mycd.bat ..\..\..\..\..\..\..\..
tools=c:\tools\mycd.bat C:\tools
wk=c:\tools\mycd.bat %WORKSPACE%
Now you can go up a directory level by typing ..
Add another . for each level you want to go up.
When you want to go back, type cd - and you will be back where you started.
Aliases to jump to directories like wk or tools (shown above) swiftly take you from location to location, are easy to create, and can really help if you work in the command line frequently.
You could use the command:
cd ..\ -> To go up one level
cd ..\..\ -> To go up two levels
Note the space after cd
I'm creating a recycle-bin script in SH shell linux in three differant scripts, delete, trash and restore.
The first two scripts are working fine; 'Delete' moves the selected file to the recycle-bin while logging a text file called 'trashinfo' which shows the original path location of the file (to be later used in restore) and 'Trash' which removes everything in the recycle-bin.
The 'restore' script should take the logged path name gained in the delete script and return the file to its original location. I've spent more time than I'd like to remember on this and cant get the restore script to work properly!
Below is the script I've written, as far as I can make out I'm grepping for the filename variable in the text file that holds the pathname, eg 'restore testfile', this is then combined with the basename command, the testfile is then moved into the location thats been grepped and combined with the basename.
Anyone have any pointers on where I'm going wrong?
if [ "$*" != -f ]
then
path=grep "$*" /usr/local/bin/trashinfo
pathname=basename "$path"
mv "$path" "$pathname"
path=$(grep "$*" /usr/local/bin/trashinfo)
pathname=$(basename "$path")
I am using 7z command line executable to zip files, but I see that while adding to an archive the path of the files is preserved in the archive.
So if I do
7z a -tzip myzip.zip dir1\dir2\*
the archive myzip.zip will contain the path dir1\dir2. I do not want this, rather I want only the files to be added to the zip file without the paths being preserved.
I searched quite a bit but do not seem to find any way of doing this, maybe I am missing something obvious?
Thanks
Just add a dot before the path, i.e.
7z a -tzip -r myzip.zip .\Relative\Dir\*
Give the full path. That should work. Not the relative path from the current location.
For example, I give the below, where I want the files in the man5 folder to be archived.
$ 7z a -tzip myzip.zip /home/pradeeban/Desktop/man4/man5/*
The zip contained only the files, without the directories.
Then I gave only the relative path. It had the directories, inside the zip.
$ 7z a -tzip myzip.zip Desktop/man4/man5/*
Tried with Linux (Ubuntu 12.04). Not sure whether that differs from Windows.
I discovered a way to do this by using a relative path:
7z a -tzip myzip.zip %CD%\dir1\dir2\*
%CD% is how you get the current path in a Windows batch file, but it also works from the command line. More info about Capturing the current directory from a batch file.
As explained in related question in 7-zip user FAQ, 7z stores paths relative to working directory, so you will need to first cd to desired top-level directory for archive and run 7-zip from here.
cd dir1\dir2\
7z a -tzip myzip.zip *
If you run it from script and don't want to affect it with changed directory, use directory push/pop facilities available in your shell of choice or run cd+7-zip in spawned process to avoid affecting your entire script with changed directory. For example, using Windows' start that would be:
start /D dir1\dir2\ /wait 7z a -tzip myzip.zip *
This worked for me
Consider folder structure like C:\Parent\SubFolders..... And you want to create parent.zip which will contain all files and folders C:\Parent without parent folder [i.e it will start from SubFolders.....]
cd /D "C:\Parent"
"7z.exe" a Parent.zip "*.*" -r
This will create Parent.zip in C:\Parent
My colleague has created an JAVA_HOME variable somewhere but he could not remember.
I have check /etc/profile, /etc/bashrc, /root/.bash_profile, /root/.bashrc. All these files does not have a line to set JAVA_HOME, but it still keep coming back with old values.
So, is there a way to find out where is it coming from?
Here's one crude but effective way:
cd /
grep -r "JAVA_HOME" .
This will recursively search all subdirectories under the starting point (the UNIX root directory, in this example) for any file containing the string 'JAVA_HOME'.
You can use grep -r --include="*.ext" "JAVA_HOME" . if you want to restrict your searches to files having the extension .ext.