I have a bash script where I'd like to check if an alias to activate conda runs successfully and if not raise an error. Although script runs without raising an error, none of the echo's get printed. How could I fix it?

My ~/.bashrc file contains

### shortcut to activate installed miniconda2
activate_conda() {
export PATH=$HOME/miniconda2/bin:/bin:/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games;
   }
alias activate_conda="activate_conda"

And when I run the following bash script

#!/bin/bash
#Check if activate_conda command runs successfully  

activate_conda
if [ $? -eq 0 ]; then
   echo "activate_conda was successful"         
   exit 0
else
   echo "activate_conda was not successful. 
         Please check your .bashrc file"                  
   exit 1
fi

#another function to check the same alias  
if activate_conda ; then
  echo "Command succeeded"
else
  echo "Command failed"
fi

script runs but no echo commands get printed. I think above functions are valid for actual build in terminal commands. But I am trying to run an alias as a command.

How to check if a command succeeded?

I have written a small bash script to find if a directory named anaconda or miniconda in my user $HOME. But it does not find the miniconda2 directory in my home.

How could I fix this?

if [ -d "$HOME"/"(ana|mini)conda[0-9]?" ]; then
    echo "miniconda directory is found in your $HOME"
else
    echo "anaconda/miniconda is not found in your $HOME"
fi

P.S: If I have [ -d "$HOME"/miniconda2 ]; then, then it finds the miniconda2 directory so I think error lies in the part "(ana|mini)conda[0-9]?"

I want the script to be general. For me, it's miniconda2 but for some other user it might be anaconda2, miniconda3 and so on.

I have many *.c and *.h files in a directory. I want to convert all these files to Linux compatible format. I've attempted following script and it runs but nothing get converted.

And I also need to check if everything get converted successfully. Therefore I filter and compare its output to the original file in the directory.

How could I fix it?

#!/bin/bash

function  converting_files() {

   cd "/path/to/dir" &&  find . -type f -print0 | xargs -0 | dos2unix

}

function success_of_converting_files() {

 FILES=colsim_xfig/xfig.3.2.5c/*
 #There are 250 files in the dir and not all but most of them are .c and .h
 for i in {000..249} ; do                 
   for f in "$Files" ; do 
   #I think *.txt line ending is fine as we only want to compare
     dos2unix < myfile{i}.txt | cmp -s - myfile{i}.txt
   done 
   done        
}

function main() {

   converting_files
   success_of_converting           
}

I basically need to convert all files to LF line endings. p.S: Total number of files in the directory is 249. The number of files in the directory is not fixed so, it would be better if I could have an arbitrary number of arguments instead of just 249.

I am running a software where I want to check if miniconda is already installed. Therefore I've checked whether 'miniconda' or 'anaconda' strings in .bashrc file using the grep command. However, it also finds either of above strings which are commented out in the .bashrc file, which I do not want to have. How do I fix this? Relevant part of my bashscript looks as follows.

#Finding if miniconda or anaconda string is in bashrc  
if grep -qF -e miniconda -e anaconda "$HOME"/.bashrc ;then    
  echo "miniconda is found in .bashrc"

I've tested this by adding following lines in the .bashrc file.

#anaconda
#miniconda 

Terminal Output

jen@scs400:/scratch$ source bash_script.sh     
miniconda is found in .bashrc

I have a program to be compiled in which I need to have gcc.

However, when a python 2.7 virtual conda enviornment being installed, it needs gcc. So I believe I don't have to install gcc package seperately inside the enviornment. Is this true? And how do I actually see this?

Furthermore, gcc has already been installed in the system itself. I do not want the program to use this system gcc when it's compiling but to use the gcc version which is inside the enviornment. How do I actually test this? Thanks in advance!

This discussion might be useful.

according to this post "If you download python binaries, it's already compiled and doesn't use your gcc"

So to reprase my question, can we use the gcc inside the virtual to compile the program? or do I have to install gcc inside the env?

     (yourenvname) ~$gcc -v
        Using built-in specs.
        COLLECT_GCC=gcc
        COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
        OFFLOAD_TARGET_NAMES=nvptx-none
        OFFLOAD_TARGET_DEFAULT=1
        Target: x86_64-linux-gnu
        Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.2.0-8ubuntu3.2' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix    
gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3.2) 


(yourenvname) ~$python
Python 2.7.16 |Anaconda, Inc.| (default, Mar 14 2019, 21:00:58) 
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.

I am writing a bash script to install a program for different users.

For that I want to make sure that each user has at least 500Mb available in their $HOME. My $HOME directory looks as follows

jen@ser23:~$ df -h
Filesystem                           Size  Used Avail Use% Mounted on
/dev/sda1                            2,9G  1,1G  1,7G  40% /
udev                                 10M     0   10M   0% /dev
tmpfs                                13G   826M   12G   7% /run
/dev/sda3                            15G   9,8G   4,1G   71% /usr
tmpfs                                32G     0   32G   0% /dev/shm
tmpfs                                5,0M    0   5,0M  0% /run/lock
tmpfs                                32G     0   32G   0% /sys/fs/cgroup
/dev/mapper/local_disk_1-tmp         3,7G   21M  3,7G   1% /tmp
/dev/mapper/local_disk_1-opt         20G   2,0G   18G   10% /opt
/dev/mapper/local_disk_1-project1    401G  287G  114G  72% /project1
/dev/mapper/local_disk_1-var         3,8G  1,7G  1,7G  50% /var
/dev/mapper/local_disk_1-project2    99G   70G   29G   71% /project2
/dev/mapper/local_disk_1-usr_local   2,0G  3,4M  1,9G   1% /usr/local
nfs4.sf0.ise.fhg.de:/g/6/TSB/Archiv  632T  349T  276T  56% /net/p/600/groupdrives/TSB/Archiv
nfs4.sf0.ise.fhg.de:/home            632T  349T  276T  56% /net/home
tmpfs                                6,4G     0  6,4G   0% /run/user/12419
tmpfs                                6,4G  4,0K  6,4G   1% /run/user/13471
tmpfs                                6,4G  4,0K  6,4G   1% /run/user/9351
tmpfs                                6,4G     0  6,4G   0% /run/user/13142

My idea is to use df -h /path/to/home | awk but I am not sure how I can get the actual available space from df -h. Any help please? Thanks, Jen.

jen@ser23:~$ df -P /net/home/j/jen
Filesystem                1024-blocks    Used Available Capacity Mounted on
nfs4.sf0.dfd.fhg.de:/home     5242880 1026048   4216832      20% /net/home

I'd like to write a script where if a user enters a path which contains his/her $HOME directory, it would raise an error and the script will run until user enters a valid path in which the loop will break.

Apparently it gives a syntax error if I have continue or break commands. What do I do wrong here? Thanks, Jen.

#!/bin/bash

function project1_install_dir_path() {   

    boolian_2=true; 
    while true; do

    if [ "$boolian_2" = true ] ; then

       read -p "Enter FULL folder path where you want to install colsim1:" fullpath

       echo "you have enterd "$fullpath". Please press 'y' to confirm and 'n' to enter again"

       case "$fullpath" in

       "$HOME"*) echo "Error: The path cannot be in your HOME" ;; continue      
       */home*) echo "Error: The path cannot contain 'home' in the path" ;; continue
       *) echo "you have entered a valid path" ;; break

       esac
       done    
   fi    
}

function main() {

project1_install_dir_path    
}

Terminal Output

jen@ss23:/bash_file.sh 
-bash: /project/bash_file.sh: line 62: syntax error near unexpected token `newline'
-bash: /project/bash_file.sh: line 62: ` "$HOME"*) echo "Error: The path cannot be in your HOME" ;; continue  

I'd like to write a bash script which automatically downloads the miniconda installation script in Linux-x86_64 for python2.7.

Apparently I have to go to the website and manually download the installation file.

I can get slightly older version here which would give me conda 4.5.12 version but from the miniconda website I get conda 4.6.9

Basically I want a function like below but instead of downloading this file, I'd like to have the latest version. Thanks, Jen.

    #!/bin/bash

    #Function to Download miniconda

    function download_miniconda() {

    url=http://repo.continuum.io/miniconda/Miniconda2-4.5.12-Linux-x86_64.sh
    wget -c "$url"           
 }

One work away around would be to run conda update conda after installing 4.5.12 but I'd like to avoid this.

I'd like to write a regex in shellscript which would compare the user input path to user$HOME. Then it would raise an error in case the user input path contains the user $HOME. The home folder normally starts with /ort/home but /ort part is not a must. When I run it always gives a valid path although I clearly enter an invalid path. What am I doing wrong? Thanks. Please refer following link[1] if necessary to see how regex are used in shellscript

My attempt is as follows

#!/bin/bash

function user_input () {

        read -p "Type the path for project1:" user_path

        string1="${HOME}"
        echo "$string1"

        if [ "$user_path" = "$string1 | /ort/home/+.* |  .*+/home/+.*"  ]; then 
             echo "Not a valid path, contains $HOME directory"        
        else
             echo "valid path"
        fi
}

function main() {

user_input
}

main

Terminal output

Please note first entry is a valid path and other two are invalid paths.

jenny@server32:~$ ./test.sh 
Type the path for project1:/scratch/random
/ort/home/j/jen
valid path

jenny@server32:~$ ./test.sh 
Type the path for project1:/ort/home/j/jen
/ort/home/j/jen
valid path

jenny@server32:~$ ./test.sh 
Type the path for project1:/ort/home
/ort/home/j/jen
valid path

[1]https://stackoverflow.com/questions/2237080/how-to-compare-strings-in-bash

So I have written a bashscript.sh file to check if a directory project1_repo is empty after cloning a project.

I have written four different functions to authenticate it but all the time I get command not found error. I have checked multiple times if there is a syntax error but in vain. Could someone please help me out? Thanks.

EDIT: Previously due to a typo project1_install_dir was called colsim1_install_dir but the edited version is correct.

#!/bin/bash

#path to install project1
function project1_install_dir() {
   while true; 
 do
  read -p "Enter FULL folder path where you want to install project1:" fullpath
  echo "you have enterd $fullpath. Please press 'y' to confirm and 'n' to enter again"
  read -p "Continue? (Y/N): " confirm 
  if [[ $confirm =~ ^([yY][eE][sS]|[yY])$ ]]; then
    break
  else
    continue         
  fi
done
 }

#clone project1
function clone_project1_repo() {
  git clone example git .     
    }

# four functions to Check whether cloning is successful
# function 1
function success_of_cloning_of_project1_repo3() {
  if find $fullpath/project1/project1_repo -mindepth 1 | read; then
     echo "dir not empty"
  else
     echo "dir empty"
  fi
}

# function 2
function success_of_cloning_of_project_repo2() {
DIR="$fullpath/project1/project1_repo"
if [ -n "$(ls -A $DIR)" ]; then
  echo "Take action $DIR is not Empty"
else
  echo "$DIR is Empty"
fi
}

# function 3    
function success_of_cloning_of_project_repo1() {
if [ -d $fullpath/project1/project1_repo ]; then
      [ -n "$(ls -A $fullpath/project1/project1_repo)" ] && echo "Not Empty" || echo "Empty"
else
   :
fi
    }

# function 4
function success_of_cloning_of_project_repo() {
while true;
 do
  if [ -n "$(ls -A $fullpath/project1/project1_repo)" ]; then
    echo "cloning of project1_repo is successful"               
    break
  else
    echo "cloning of project1_repo is NOT successful."
    continue      
  fi                
 done
}

#calling the functions
    function main() {
       project1_install_dir
       success_of_cloning_of_project1_repo3 
       success_of_cloning_of_project1_repo2  
       success_of_cloning_of_project1_repo1
       success_of_cloning_of_project1_repo
    }

    main

Terminal output:

jen@ex343:tdk/jen$ source bash_file_test.sh 
Enter FULL folder path where you want to install project1:/tdk/jen

you have enterd /tdk/jen. Please press 'y' to confirm and 'n' to enter again
 Continue? (Y/N): y
 You have chosen yes
-bash: success_of_cloning_of_project1_repo3: command not found
-bash: success_of_cloning_of_project1_repo2: command not found
-bash: success_of_cloning_of_project1_repo1: command not found
-bash: success_of_cloning_of_project1_repo: command not found

I have written a bash script which creates a series of directories and clones a project to selected directories.

For that, I need to cd to each directory (project 1 and project 2), but the script doesn't cd to the second directory nor executes the command.

Instead, it stops after cd and cloning in theproject2 directory. Why doesn't it call the cd_project1 function in the following code?

#!/bin/bash
#Get the current user name 

function my_user_name() {        
current_user=$USER
echo " Current user is $current_user"
}

#Creating useful directories

function create_useful_directories() {  
  if [[ ! -d "$scratch" ]]; then
  echo "creating relevant directory"
  mkdir -p /home/"$current_user"/Downloads/scratch/"$current_user"/project1/project2
  else
     echo "scratch directory already exists"
     :
  fi
}

#Going to project2 and cloning 

function cd_project2() {

  cd /home/"$current_user"/Downloads/scratch/"$current_user"/project1/project2 &&
  git clone https://[email protected]/teamsinspace/documentation-tests.git
  exec bash
}

#Going to project1 directory and cloning 
function cd_project1() {

  cd /home/"$current_user"/Downloads/scratch/"$current_user"/project1/ &&
  git clone https://[email protected]/teamsinspace/documentation-tests.git
  exec bash

}

#Running the functions  
function main() {

  my_user_name
  create_useful_directories
  cd_project2
  cd_project1    
}
main

Terminal output:

~/Downloads$. ./bash_install_script.sh    
Current user is mihi
creating relevant directory
Cloning into 'documentation-tests'...
remote: Counting objects: 125, done.
remote: Compressing objects: 100% (115/115), done.
remote: Total 125 (delta 59), reused 0 (delta 0)
Receiving objects: 100% (125/125), 33.61 KiB | 362.00 KiB/s, done.
Resolving deltas: 100% (59/59), done.
~/Downloads/scratch/mihi/project1/project2$