How to check if a library is installed?

To do this in a distro-independent* fashion you can use ldconfig with grep, like this:

ldconfig -p | grep libjpeg

If libjpeg is not installed, there will be no output. If it is installed, you will get a line for each version available.

Replace libjpeg by any library you want, and you have a generic, distro-independent* way of checking for library availability.

If for some reason the path to ldconfig is not set, you can try to invoke it using its full path, usually /sbin/ldconfig.

**99% of the times*

Related Posts:

  1. Chmod 777 to a folder and all contents [duplicate]
  2. Cannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running?
  3. How do I grep recursively?
  4. “Couldn’t find a file descriptor referring to the console” on Ubuntu bash on Windows
  5. How can I recursively find all files in current and subfolders based on wildcard matching?
  6. How to install grub after installing Windows 10
  7. -bash: syntax error near unexpected token `newline’ for display command
  8. SSH using python script
  9. Changing the resolution of a VNC session in linux
  10. mysql_config not found when installing mysqldb python interface
  11. Linux error while loading shared libraries: cannot open shared object file: No such file or directory
  12. Shell command to tar directory excluding certain files/folders
  13. QEMU: /bin/sh: can’t access tty; job control turned off
  14. Meaning of exit status 1 returned by linux command
  15. How does “cat << EOF" work in bash?
  16. X11 forwarding request failed on channel 0
  17. What is difference between arm64 and armhf?
  18. Extract file basename without path and extension in bash
  19. How to change permissions for a folder and its subfolders/files in one step
  20. mysql_config not found when installing mysqldb python interface
  21. linux command to get size of files and directories present in a particular folder?
  22. ./configure : /bin/sh^M : bad interpreter
  23. How to count lines in a document?
  24. What does `set -x` do?
  25. Compile the Fortran program in Windows using gfortran
  26. How can I set the ‘backend’ in matplotlib in Python?
  27. Yum fails with – There are no enabled repos.
  28. How to get the process ID to kill a nohup process?
  29. Unable to establish SSL connection upon wget on Ubuntu 14.04 LTS
  30. Writing a simple shell in C using fork/execvp
  31. Using ls to list directories and their total sizes
  32. configure: error: cannot run C compiled programs
  33. tar: add all files and directories in current directory INCLUDING .svn and so on
  34. What does set -e mean in a bash script?
  35. What does set -e mean in a bash script?
  36. “find: paths must precede expression:” How do I specify a recursive search that also finds files in the current directory?
  37. Pipe to/from the clipboard in a Bash script
  38. Difference between exec, execvp, execl, execv?
  39. what does -zxvf mean in tar -zxvf filename? 
  40. Retrieve last 100 lines logs
  41. Configuring Apache for localhost
  42. Restarting cron after changing crontab file?
  43. cd into directory without having permission
  44. Android – Command not found
  45. EC2 ssh Permission denied (publickey,gssapi-keyex,gssapi-with-mic)
  46. What does ‘bash -c’ do?
  47. How do I know the script file name in a Bash script?
  48. WordPress can’t find temporary folder, but folder it’s looking at has correct permissions
  49. WordPress cloning issue
  50. How to run a server on port 80 as a normal user on Linux?
  51. Copying a large directory tree locally? cp or rsync?
  52. Check if port is open or closed on a Linux server?
  53. Moving an already-running process to Screen
  54. When does `cron.daily` run?
  55. Permission denied (publickey). SSH from local Ubuntu to Amazon EC2 server
  56. How to run a command multiple times, using bash shell?
  57. How to reconnect to a disconnected ssh session
  58. What does a + mean at the end of the permissions from ls -l?
  59. Should I quit using Ifconfig?
  60. SSL Certificate Location on UNIX/Linux
  61. What is “-bash: !”: event not found”
  62. What version of RHEL am I using?
  63. Keeping a linux process running after I logout
  64. Force dig to resolve without using cache
  65. How do you make it obvious you are on a production system?
  66. How can I verify if TLS 1.2 is supported on a remote web server from the RHEL/CentOS shell?
  67. How to forcibly close a socket in TIME_WAIT?
  68. How to check if an RSA public / private key pair match
  69. Mount CIFS Host is down
  70. Colors in bash after piping through less?
  71. List of files installed from apt package
  72. How to copy a large number of files quickly between two servers
  73. Why does sudo command take long to execute?
  74. Allow SFTP but disallow SSH?
  75. “POSSIBLE BREAK-IN ATTEMPT!” in /var/log/secure — what does this mean?
  76. How to display certain lines from a text file in Linux?
  77. Can you have more than one ~/.ssh/config file?
  78. How can I export the privileges from MySQL and then import to a new server?
  79. Is there a directory equivalent of /dev/null in Linux?
  80. How to force nginx to resolve DNS (of a dynamic hostname) everytime when doing proxy_pass?
  81. Can I send some text to the STDIN of an active process running in a screen session?
  82. How can I get processor/RAM/disk specs from the Linux command Line? [duplicate]
  83. GPG does not have enough entropy
  84. Is there a way to see the execution tree of systemd?
  85. Why don’t EC2 ubuntu images have swap?
  86. How to determine the hostname from an IP address in a Windows network?
  87. SSHFS mount that survives disconnect
  88. Temporarily ignore my `~/.ssh/known_hosts` file?
  89. How to get TX/RX bytes without ifconfig?
  90. create home directories after create users
  91. Curl: disable certificate verification
  92. How do I redirect subdomains to a different port on the same server?
  93. Running Cron every 2 hours [duplicate]
  94. How to apply a filter to real time output of `tail -f `?
  95. How to check the physical status of an ethernet port in Linux?
  96. What does “debconf: delaying package configuration, since apt-utils is not installed” mean?
  97. Practical maximum open file descriptors (ulimit -n) for a high volume system
  98. In Linux, what is the difference between “buffers” and “cache” reported by the free command?
  99. How to handle relative urls correctly with a reverse proxy
  100. Where’s the conventional place to store git repositories in a linux file system tree?

Leave a Comment