http://192.168.180.206:8001/ 2026-05-12T23:30:39+00:00 http://192.168.180.206:8001/ http://192.168.180.206:8001/_media/wiki:dokuwiki.svg text/html 2023-11-23T06:06:59+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:arg?rev=1700719619&do=diff Bash: arguments Access to parameters with variables $@ or $*. Both expands to the positional parameters, starting from one. * $@ When the expansion occurs within double quotes, each parameter expands to a separate word. That is, “$@” is equivalent to text/html 2026-03-08T18:50:52+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:cond?rev=1772995852&do=diff Conditionals negate if [[ $? -ne 0 ]]; then if ! [[ $? -eq 0 ]]; then if [[ ! $? -eq 0 ]]; then text/html 2020-06-16T09:59:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:error_handling?rev=1592301545&do=diff BASH: Error handling function exit on error Construction similar to try-catch: task() { ( set -e set -o pipefail echo "task() started" do_command1 ${1} ${2} && banner OK || banner ERROR do_command2 ${1} ${2} && banner OK || banner ERROR build_cmd_step_1 build_cmd_step_2 build_cmd_step_3 ... )} task param1 param2 text/html 2026-04-18T07:30:14+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:heredoc?rev=1776497414&do=diff heredoc Suppress variable expansion To do not handle $ in heredoc you need to quote (' or ") heredoc delimiter: cat > /opt/bin/startup.sh << "ENDSCRIPT" #!/bin/sh export LD_LIBRARY_PATH=...:$LD_LIBRARY_PATH source /opt/bin/env.sh /opt/bin/hello ENDSCRIPT text/html 2025-11-25T07:40:29+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:password?rev=1764056429&do=diff passwords handling <https://www.linux-magazine.com/Online/Features/Bash-Tips-Passing-Passwords> Fundamentals of handling passwords securely in a shell text/html 2026-05-07T05:38:16+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:re?rev=1778132296&do=diff Regular expressions * Double square brackets * regular expression without quotes if [[ "$string" =~ [0-9]+ ]]; then echo MATCH fi text/html 2026-05-05T10:16:28+00:00 Anonymous (anonymous@undisclosed.example.com) http://192.168.180.206:8001/linux:bash:source?rev=1777976188&do=diff source Possible test scenario: * call from another directory by full path /home/user/bin/myscripth.sh * add /home/user/bin to PATH and then call from another directory by myscript.sh * create symlink to script and call using symlink. Check for relative and absolute symlinks.