I am writing a nightly build script in bash. Everything is fine and dandy except for one little snag: #!/bin/bash for file in "$PATH_TO_SOMEWHERE"; do if [ -d $file ] then # do something directory-ish else if [ "$file" == "*.txt" ] # this is the snag then ...
I have a skeleton text file with placeholder strings: blah blah blah blah $PLACEHOLDER_1$ blah $PLACEHOLDER_2$ and so on. Specific "form" of placeholders does not matter -- I may change them to whatever most comfortable for specific implementation. I have a bash script where I know values for placeholders, and I need to generate a ne...
In my bash script I have an external (received from user) string, which I should use in sed pattern. REPLACE="<funny characters here>" sed "s/KEYWORD/$REPLACE/g" How can I escape the $REPLACE string so it would be safely accepted by sed as a literal replacement? NOTE: The KEYWORD is a dumb substring with no matches etc. It is not sup...
I'm looking for an easy way to track time I work on a project using the command line. I do echo "$(date) : Start" >>worktime.txt When I start working and echo "$(date) : End" >>worktime.txt When I stop working. The result is a file of the form: kent@rat:~/work$ cat worktime.txt Fri Jan 2 19:17:13 CET 2009 : Start Fri Jan 2 19:4...
The following code gives [: -ge: unary operator expected when i=0 if [ $i -ge 2 ] then #some code fi why? ...
I have this bash script running my backup to an external hard drive... only if that drive is mounted (OS X): DIR=/Volumes/External; if [ -e $DIR ]; then rsync -av ~/dir_to_backup $DIR; else echo "$DIR does not exist"; fi This works, but I sense I am misreading the rsync man page. Is there a builtin rsync option to abort the run i...
In bash one can escape arguments that contain whitespace. foo "a string" This also works for arguments to a command or function: bar() { foo "$@" } bar "a string" So far so good, but what if I want to manipulate the arguments before calling foo? This does not work: bar() { for arg in "$@" do args="$args \"pre...
Hello! I have a bash script file which starts with a function definition, like this: #!/bin/bash # ..... # ..... function test { ... ... } ... ... I use vim 7.2, and I have set g:sh_fold_enabled=1 such that folding is enabled with bash. The problem is that the folding of the function test is not ended correctly, i.e. it lasts until t...
Here's a snippet of code from a shell script I have written: for src in $(find . -type f -maxdepth 1 \! -name ${deploy} \! -name gvimrc) do src=$(basename ${src}) dest="~/.${src}" copy="${src} -> ${dest}" cp $src $dest && echo -e "${ok} ${copy}" || echo -e "${fail} ${copy}" done For some reason, cp fails to execute. Fo...
I have a directory with 2000 files or so. I want a script or a list of piped commands that will allow me to select a random sample of N files. ...
I've used a number of different *nix-based systems of the years, and it seems like every flavor of Bash I use has a different algorithm for deciding which startup scripts to run. For the purposes of tasks like setting up environment variables and aliases and printing startup messages (e.g. MOTDs), which startup script is the appropriate...
I want to pipe the output of a "template" file into mysql, the file having variables like ${dbName} interspersed. What is the commandline utility to replace these instances and dump the output to stdout? ...
Hello, I have a bash script that runs a simulation program written in Fortran 90, and all output is redirected to a file. If the program finishes without problems, I set a success parameter. The code looks something like this: #!/bin/bash ... echo -n "Running program..." ./sim_program >...
How do I tell my bash to not echo ^C back to terminal? If I just hit Ctrl+C in bash session, nothing is printed in my terminal window. But if I terminate some program with Ctrl+C, sometimes ^C is echoed and printed in my terminal. Is there any way to tell my bash I do not want echoing back ^C at all? ...
In bash, calling foo would display any output from that command on the stdout. Calling foo > output would redirect any output from that command to the file specified (in this case 'output'). Is there a way to redirect output to a file and have it display on stdout? ...
Right now I'm using exec to redirect stderr to an error log with exec 2>> ${errorLog} The only downside is that I have to start each run with a timestamp since exec just pushes the text straight into the log file. Is there a way to redirect stderr but allow me to append text to it, such as a time stamp? ...
What I'd like to do is to include settings from a file into my current interactive bash shell like this: $ . /path/to/some/dir/.settings The problem is that the .settings script also needs to use the "." operator to include other files like this: . .extra_settings How do I reference the relative path for .extra_settings in the .setti...
I'm using the following command to remove every ".dummy" directories in a folder named "Test Folder": rm -rf `find "Test Folder" -type d -name .dummy` However, this doesn't work since it expands to, say: rm -rf Test Folder/.dummy Since the whitespace is not escaped, this fails. I also tried something like this: find "Test Folder"...
When working an interactive bash session, one aspect from the Windows shell I miss is the F8 key where you start typing a command, hit F8 and the shell finds the most recent command entered in history that matches what you have typed so far. e.g. me@Ubntu07:~>cd /home/jb<F8 Key Here> brings up my prior command: me@Ubntu07:~>cd /home/...
Using PyCrypto (although I've tried this in ObjC with OpenSSL bindings as well) : from Crypto.Cipher import DES import base64 obj=DES.new('abcdefgh', DES.MODE_ECB) plain="Guido van Rossum is a space alien.XXXXXX" ciph=obj.encrypt(plain) enc=base64.b64encode(ciph) #print ciph print enc outputs a base64 encoded value of : ESzjTnGMRFnfV...