Display only files and folders that are symbolic links in tcsh or bash
Find all the symbolic links in a directory: ls -l `find /usr/bin -maxdepth 1 -type l -print` For the listing of hidden files: ls -ald .*
linux
Removing Windows newlines on Linux (sed vs. awk)
You can use the command line tool dos2unix dos2unix input Or use the tr command: tr -d ‘\r’ <input >output Actually, you can do the file-format switching in vim: Method A: :e ++ff=dos :w ++ff=unix :e! Method B: :e ++ff=dos :set ff=unix :w EDIT If you want to delete the \r\n sequences in the file, …
Get the characters after the last index of a substring from a string
If the string is in a variable: $ foo=”header. stuff. more stuff” $ echo “${foo##*. }” more stuff If there are multiple instances of “. ” (as in my example) and you want everything after the first occurrence, instead of the last, just use one #: $ echo “${foo#*. }” stuff. more stuff
How do I replace single quotes with another character in sed?
Try to keep sed commands simple as much as possible. Otherwise you’ll get confused of what you’d written reading it later. #!/bin/bash sed “s/’/ /g” myfile.txt
How to feed mysql queries from bash
Try like this: echo “select 1” | mysql
Finding executable files using ls and grep
Do you need to use ls? You can use find to do the same: find . -maxdepth 1 -perm -111 -type f will return all executable files in the current directory. Remove the -maxdepth flag to traverse all child directories. You could try this terribleness but it might match files that contain strings that look …
Using output of awk to run command
Use system from within awk: awk ‘{ system(“openssl s_client -connect host:port -cipher ” $1) }’ ciphers.txt
How to use gssapi kerberos in c / c++ client server cross-platform programs? [closed]
How to use gssapi kerberos in c / c++ client server cross-platform programs? [closed]
Does libcxxabi makes sense under linux? What are the benefits?
You should not use libcxxabi directly. To my understanding it is a kind of platform abstraction library, providing low level functions needed to implement libcxx. If you are asking about using libcxx or libstdc++, the differences are mostly the license, newer standard version completeness (the clang project seems slightly faster in implementing recent C++ revisions) …